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Mahaska County, Iowa

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The first courthouse was completed in January 1846. When a larger structure was required, the second courthouse was constructed in 1885–86, first being used on February 27, 1886. The first school, a small log cabin one-half mile (ca. 2 km) east of Oskaloosa, was opened on September 16, 1844, and
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living together, 7.50% had a female householder with no husband present, and 30.80% were non-families. 26.60% of all households were made up of individuals, and 12.40% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.96.
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The 2020 census recorded a population of 22,190 in the county, with a population density of 38.832/sq mi (14.993/km). 96.02% of the population reported being of one race. 90.01% were non-Hispanic White, 1.78% were Black, 2.16% were Hispanic, 0.18% were Native American, 1.14% were Asian, 0.07%
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In the county, the population was spread out, with 25.70% under the age of 18, 9.40% from 18 to 24, 26.80% from 25 to 44, 21.70% from 45 to 64, and 16.30% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 99.10 males. For every 100 females age 18 and
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was 39 people per square mile (15 people/km). There were 9,551 housing units at an average density of 17 units per square mile (6.6 units/km). The racial makeup of the county was 97.20%
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The 2010 census recorded a population of 22,381 in the county, with a population density of 39.2051/sq mi (15.1372/km). There were 9,766 housing units, of which 8,975 were occupied.
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The median income for a household in the county was $ 37,314, and the median income for a family was $ 43,557. Males had a median income of $ 32,618 versus $ 23,192 for females. The
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Mahaska County is a strongly Republican county. Only six Republican Party presidential candidates from 1880 to the present day have failed to win the county, most recently
398: 420:, the county has a total area of 573 square miles (1,480 km), of which 571 square miles (1,480 km) is land and 2.5 square miles (6.5 km) (0.4%) is water. 4303: 3469: 899:
were Native Hawaiian or Pacific Islander and 4.66% were some other race or more than one race. There were 9,680 housing units, of which 8,799 were occupied.
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Mahaska County was formed in February 1843. The county has been self-governing since February 5, 1844. It was named after
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the Cumberland Presbyterian Church opened as the first church in 1846. On July 2, 1850, the first edition of the
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There were 8,880 households, out of which 32.40% had children under the age of 18 living with them, 58.60% were
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of 2000, there were 22,335 people, 8,880 households, and 6,144 families residing in the county. The
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for the county was $ 18,232. About 7.50% of families and 9.80% of the population were below the
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Coal mining was once a major industry in Mahaska County. During the 19th century,
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National Register of Historic Places listings in Mahaska County, Iowa
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United States presidential election results for Mahaska County, Iowa
284: 263: 258: 2643: 3111: 963: 310: 176: 2688:"Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" 951:, and 0.78% from two or more races. 0.85% of the population were 3307: 3099: 2827: 916: 1187:
The population ranking of the following table is based on the
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in 1964 in his landslide loss statewide & nationally to
3342: 3028: 2862: 335: 161: 74: 2666:"Population of Counties by Decennial Census: 1900 to 1990" 376: 2777: 430: 2751:. United States Census Bureau – American FactFinder. 2418: 2801:"Dave Leip's Atlas of U.S. Presidential Elections" 4334: 2746:"Population & Housing Occupancy Status 2010" 873:Population of Mahaska County from US census data 2592: 3323: 2979: 2848: 2722:. United States Census Bureau. Archived from 1049: 353:Mahaska County comprises the Oskaloosa, IA 3330: 3316: 2986: 2972: 2855: 2841: 2574:"US Gazetteer files: 2010, 2000, and 1990" 232:2.5 sq mi (6 km)  0.4% 4353:Iowa placenames of Native American origin 2460: 2458: 2456: 881: 868: 375: 3103:Map of Iowa highlighting Mahaska County 2863:Places adjacent to Mahaska County, Iowa 4335: 3631:Omaha–Council Bluffs metropolitan area 2466:"2020 Census State Redistricting Data" 2453: 569: 401:were laid through the county in 1864. 4358:1843 establishments in Iowa Territory 3311: 2967: 2836: 2758:from the original on October 16, 2020 2561:Historic Coal Mines in Mahaska County 1457: 1452: 1447: 1444: 1182: 4363:Populated places established in 1843 2870: 2511: 2509: 502: 53:in Oskaloosa, built 1886, is on the 2700:from the original on March 27, 2010 497:List of intercity bus stops in Iowa 224:571 sq mi (1,480 km) 216:573 sq mi (1,480 km) 116:41.333888888889°N 92.645555555556°W 13: 3098: 2994:Municipalities and communities of 2712: 2563:, Mahaska 4-H Tech Team, May 2006. 2494:. National Association of Counties 559: 73:Location within the U.S. state of 14: 4374: 3337: 2821: 2506: 423: 342:, the population was 22,190. The 121:41.333888888889; -92.645555555556 4284: 2932: 2915: 2907: 2890: 2798: 2646:. University of Virginia Library 2421: 479: 469: 459: 449: 439: 429: 154: 137: 82: 67: 43: 2792: 2770: 2738: 2720:"State & County QuickFacts" 2693:. United States Census Bureau. 2680: 2658: 545: 2636: 2614: 2566: 2553: 2527: 2484: 985: 971:over, there were 96.90 males. 910: 902: 877: 1: 2933: 2891: 2780:. United States Census Bureau 2668:. United States Census Bureau 2624:. United States Census Bureau 2602:. United States Census Bureau 2472:. United states Census Bureau 2447: 355:Micropolitan Statistical Area 16:County in Iowa, United States 3596:Des Moines metropolitan area 2916: 2908: 1083: 411: 7: 2644:"Historical Census Browser" 2578:United States Census Bureau 2414: 1423: 397:). The first tracks of the 88:Iowa's location within the 10: 4379: 1050:Unincorporated communities 490: 399:Des Moines Valley Railroad 360: 4280: 3772: 3649: 3581: 3361: 3349: 3283: 3273: 3213: 3110: 3096: 3027: 3008: 2868: 2437:Mahaska County Courthouse 1479: 1476: 1473: 1470: 1467: 1214:Population (2020 Census) 990: 858: 845: 830: 815: 800: 785: 770: 755: 740: 725: 710: 695: 680: 665: 650: 635: 620: 605: 590: 575: 568: 563: 558: 555: 305: 295: 274: 257: 249: 241: 236: 228: 220: 212: 207: 199: 187: 175: 167: 149: 131: 96: 81: 66: 42: 33: 26: 3548:Secretary of Agriculture 890:for Mahaska County from 3406:Congressional districts 2622:"U.S. Decennial Census" 380:Mahaska, from Fulton's 3104: 2828:Mahaska County website 895: 874: 393:was issued (today the 385: 296:Congressional district 4319:41.33389°N 92.64556°W 3601:Dissected Till Plains 3102: 2778:"U.S. Census website" 885: 872: 859:U.S. Decennial Census 551:Historical population 379: 276: • Summer ( 253:39/sq mi (15/km) 4348:Mahaska County, Iowa 3296:United States portal 2997:Mahaska County, Iowa 2913:Mahaska County, Iowa 250: • Density 57:. The architect was 4324:41.33389; -92.64556 4315: /  3591:Coteau des Prairies 2805:uselectionatlas.org 2580:. February 12, 2011 1441: 1191:of Mahaska County. 863:1990-2000 2010-2018 861:1790-1960 1900-1990 552: 112: /  3573:Treasurer of State 3553:Secretary of State 3105: 1439: 1183:Population ranking 921:population density 896: 888:population pyramid 875: 550: 418:U.S. Census Bureau 386: 242: • Total 229: • Water 213: • Total 4298: 4297: 3521:Political parties 3305: 3304: 2961: 2960: 2956: 2955: 2521:July 3, 2007, at 2412: 2411: 1434:Lyndon B. Johnson 1421: 1420: 976:per capita income 867: 866: 503:Adjacent counties 416:According to the 321: 320: 221: • Land 171:February 17, 1843 4370: 4330: 4329: 4327: 4326: 4325: 4320: 4316: 4313: 4312: 4311: 4308: 4289: 4288: 4287: 3621:Iowa Great Lakes 3611:Great River Road 3514:Native Americans 3386:Auditor of State 3381:Attorney General 3332: 3325: 3318: 3309: 3308: 3297: 3290: 3101: 3020: 3013: 3003: 2998: 2988: 2981: 2974: 2965: 2964: 2936: 2935: 2919: 2918: 2911: 2910: 2894: 2893: 2880:Poweshiek County 2871: 2857: 2850: 2843: 2834: 2833: 2816: 2815: 2813: 2811: 2796: 2790: 2789: 2787: 2785: 2774: 2768: 2767: 2765: 2763: 2757: 2750: 2742: 2736: 2735: 2733: 2731: 2716: 2710: 2709: 2707: 2705: 2699: 2692: 2684: 2678: 2677: 2675: 2673: 2662: 2656: 2655: 2653: 2651: 2640: 2634: 2633: 2631: 2629: 2618: 2612: 2611: 2609: 2607: 2596: 2590: 2589: 2587: 2585: 2570: 2564: 2557: 2551: 2550: 2548: 2546: 2537:. Archived from 2531: 2525: 2513: 2504: 2503: 2501: 2499: 2488: 2482: 2481: 2479: 2477: 2462: 2431: 2426: 2425: 2424: 1459:Third party(ies) 1442: 1438: 1390:Poweshiek County 1274:Wapello Counties 1202: 1201: 945:Pacific Islander 933:African American 894:5-year estimates 571: 566: 561: 553: 549: 515:Poweshiek County 485:Iowa Highway 149 483: 475:Iowa Highway 146 473: 465:Iowa Highway 163 463: 453: 443: 433: 395:Oskaloosa Herald 317: 314: 313:.mahaskacountyia 312: 281: 160: 158: 157: 145: 143: 141: 140: 127: 126: 124: 123: 122: 117: 113: 110: 109: 108: 105: 86: 71: 47: 24: 23: 4378: 4377: 4373: 4372: 4371: 4369: 4368: 4367: 4333: 4332: 4323: 4321: 4317: 4314: 4309: 4306: 4304: 4302: 4301: 4299: 4294: 4291:Iowa portal 4285: 4283: 4276: 3768: 3764:West Des Moines 3645: 3577: 3470:Historic Places 3421:Representatives 3357: 3345: 3336: 3306: 3301: 3295: 3288: 3279: 3269: 3216: 3209: 3200:West Des Moines 3135:East Des Moines 3106: 3094: 3090:University Park 3023: 3018: 3011: 3004: 3001: 2996: 2992: 2962: 2957: 2920: 2864: 2861: 2824: 2819: 2809: 2807: 2797: 2793: 2783: 2781: 2776: 2775: 2771: 2761: 2759: 2755: 2748: 2744: 2743: 2739: 2729: 2727: 2726:on June 7, 2011 2718: 2717: 2713: 2703: 2701: 2697: 2690: 2686: 2685: 2681: 2671: 2669: 2664: 2663: 2659: 2649: 2647: 2642: 2641: 2637: 2627: 2625: 2620: 2619: 2615: 2605: 2603: 2598: 2597: 2593: 2583: 2581: 2572: 2571: 2567: 2558: 2554: 2544: 2542: 2535:"About Mahaska" 2533: 2532: 2528: 2514: 2507: 2497: 2495: 2492:"Find a County" 2490: 2489: 2485: 2475: 2473: 2464: 2463: 2454: 2450: 2427: 2422: 2420: 2417: 1430:Barry Goldwater 1426: 1311:University Park 1211:Municipal type 1208:City/Town/etc. 1185: 1180: 1171:West Des Moines 1106:East Des Moines 1086: 1081: 1052: 1047: 1043:University Park 993: 988: 964:married couples 937:Native American 913: 905: 886:2022 US Census 880: 862: 860: 564: 548: 505: 493: 455:Iowa Highway 92 445:Iowa Highway 23 435:U.S. Highway 63 426: 414: 382:Red Men of Iowa 363: 330:located in the 309: 275: 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3646: 3644: 3643: 3638: 3633: 3628: 3623: 3618: 3613: 3608: 3606:Driftless Area 3603: 3598: 3593: 3587: 3585: 3579: 3578: 3576: 3575: 3570: 3565: 3560: 3555: 3550: 3545: 3540: 3539: 3538: 3533: 3528: 3518: 3517: 3516: 3506: 3501: 3496: 3495: 3494: 3489: 3479: 3474: 3473: 3472: 3462: 3457: 3452: 3447: 3442: 3441: 3440: 3430: 3429: 3428: 3423: 3413: 3408: 3403: 3398: 3396:Climate change 3393: 3388: 3383: 3378: 3373: 3367: 3365: 3359: 3358: 3350: 3347: 3346: 3335: 3334: 3327: 3320: 3312: 3303: 3302: 3300: 3299: 3292: 3284: 3281: 3280: 3277: 3275: 3271: 3270: 3268: 3267: 3262: 3257: 3252: 3247: 3242: 3237: 3232: 3227: 3221: 3219: 3215:Unincorporated 3211: 3210: 3208: 3207: 3202: 3197: 3192: 3187: 3182: 3177: 3172: 3170:Pleasant Grove 3167: 3162: 3157: 3152: 3147: 3142: 3137: 3132: 3127: 3122: 3116: 3114: 3108: 3107: 3097: 3095: 3093: 3092: 3087: 3082: 3076: 3071: 3066: 3061: 3059:Keomah Village 3056: 3051: 3045: 3040: 3033: 3031: 3025: 3024: 3009: 3006: 3005: 2991: 2990: 2983: 2976: 2968: 2959: 2958: 2954: 2953: 2951:Wapello County 2948: 2946: 2940: 2939: 2937: 2930: 2927: 2926: 2921: 2906: 2904: 2898: 2897: 2895: 2888: 2885: 2884: 2882: 2877: 2869: 2866: 2865: 2860: 2859: 2852: 2845: 2837: 2831: 2830: 2823: 2822:External links 2820: 2818: 2817: 2791: 2769: 2737: 2711: 2679: 2657: 2635: 2613: 2591: 2565: 2552: 2541:on May 9, 2008 2526: 2516:Mahaska County 2505: 2483: 2451: 2449: 2446: 2445: 2444: 2439: 2433: 2432: 2416: 2413: 2410: 2409: 2406: 2403: 2400: 2397: 2392: 2389: 2381: 2380: 2377: 2374: 2371: 2368: 2363: 2360: 2352: 2351: 2348: 2345: 2342: 2339: 2334: 2331: 2323: 2322: 2319: 2316: 2313: 2310: 2305: 2302: 2294: 2293: 2290: 2287: 2282: 2279: 2276: 2273: 2265: 2264: 2261: 2258: 2253: 2250: 2247: 2244: 2236: 2235: 2232: 2229: 2226: 2223: 2218: 2215: 2207: 2206: 2203: 2200: 2197: 2194: 2189: 2186: 2178: 2177: 2174: 2171: 2168: 2165: 2160: 2157: 2149: 2148: 2145: 2142: 2137: 2134: 2131: 2128: 2120: 2119: 2116: 2113: 2108: 2105: 2102: 2099: 2091: 2090: 2087: 2084: 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4268: 4265: 4263: 4260: 4258: 4255: 4253: 4250: 4248: 4245: 4243: 4240: 4238: 4235: 4233: 4230: 4228: 4225: 4223: 4220: 4218: 4215: 4213: 4210: 4208: 4205: 4203: 4200: 4198: 4195: 4193: 4190: 4188: 4185: 4183: 4180: 4178: 4175: 4173: 4170: 4168: 4167:Pottawattamie 4165: 4163: 4160: 4158: 4155: 4153: 4150: 4148: 4145: 4143: 4140: 4138: 4135: 4133: 4130: 4128: 4125: 4123: 4120: 4118: 4115: 4113: 4110: 4108: 4105: 4103: 4100: 4098: 4095: 4093: 4090: 4088: 4085: 4083: 4080: 4078: 4075: 4073: 4070: 4068: 4065: 4063: 4060: 4058: 4055: 4053: 4050: 4048: 4045: 4043: 4040: 4038: 4035: 4033: 4030: 4028: 4025: 4023: 4020: 4018: 4015: 4013: 4010: 4008: 4005: 4003: 4000: 3998: 3995: 3993: 3990: 3988: 3985: 3983: 3980: 3978: 3975: 3973: 3970: 3968: 3965: 3963: 3960: 3958: 3955: 3953: 3950: 3948: 3945: 3943: 3940: 3938: 3935: 3933: 3930: 3928: 3925: 3923: 3920: 3918: 3915: 3913: 3910: 3908: 3905: 3903: 3900: 3898: 3895: 3893: 3890: 3888: 3885: 3883: 3880: 3878: 3875: 3873: 3870: 3868: 3865: 3863: 3860: 3858: 3855: 3853: 3850: 3848: 3845: 3843: 3840: 3838: 3835: 3833: 3830: 3828: 3825: 3823: 3820: 3818: 3815: 3813: 3810: 3808: 3805: 3803: 3800: 3798: 3795: 3793: 3790: 3788: 3785: 3783: 3780: 3779: 3777: 3775: 3771: 3765: 3762: 3760: 3757: 3755: 3752: 3750: 3747: 3745: 3742: 3740: 3737: 3735: 3732: 3730: 3727: 3725: 3722: 3720: 3717: 3715: 3712: 3710: 3707: 3705: 3702: 3700: 3697: 3695: 3692: 3690: 3687: 3685: 3682: 3680: 3677: 3675: 3672: 3670: 3667: 3665: 3662: 3660: 3657: 3656: 3654: 3652: 3648: 3642: 3639: 3637: 3634: 3632: 3629: 3627: 3624: 3622: 3619: 3617: 3614: 3612: 3609: 3607: 3604: 3602: 3599: 3597: 3594: 3592: 3589: 3588: 3586: 3584: 3580: 3574: 3571: 3569: 3566: 3564: 3563:Supreme Court 3561: 3559: 3556: 3554: 3551: 3549: 3546: 3544: 3541: 3537: 3534: 3532: 3529: 3527: 3524: 3523: 3522: 3519: 3515: 3512: 3511: 3510: 3507: 3505: 3502: 3500: 3497: 3493: 3490: 3488: 3485: 3484: 3483: 3480: 3478: 3475: 3471: 3468: 3467: 3466: 3463: 3461: 3458: 3456: 3453: 3451: 3448: 3446: 3443: 3439: 3436: 3435: 3434: 3431: 3427: 3424: 3422: 3419: 3418: 3417: 3414: 3412: 3409: 3407: 3404: 3402: 3399: 3397: 3394: 3392: 3389: 3387: 3384: 3382: 3379: 3377: 3374: 3372: 3369: 3368: 3366: 3364: 3360: 3355: 3354: 3348: 3344: 3340: 3333: 3328: 3326: 3321: 3319: 3314: 3313: 3310: 3298: 3293: 3291: 3286: 3285: 3282: 3276: 3272: 3266: 3263: 3261: 3258: 3256: 3253: 3251: 3248: 3246: 3243: 3241: 3238: 3236: 3233: 3231: 3228: 3226: 3223: 3222: 3220: 3218: 3212: 3206: 3203: 3201: 3198: 3196: 3193: 3191: 3188: 3186: 3183: 3181: 3178: 3176: 3173: 3171: 3168: 3166: 3163: 3161: 3158: 3156: 3153: 3151: 3148: 3146: 3143: 3141: 3138: 3136: 3133: 3131: 3128: 3126: 3123: 3121: 3118: 3117: 3115: 3113: 3109: 3091: 3088: 3086: 3083: 3080: 3077: 3075: 3072: 3070: 3067: 3065: 3062: 3060: 3057: 3055: 3052: 3049: 3046: 3044: 3041: 3038: 3035: 3034: 3032: 3030: 3026: 3022: 3021: 3014: 3007: 3002:United States 2999: 2989: 2984: 2982: 2977: 2975: 2970: 2969: 2966: 2952: 2949: 2947: 2945: 2944:Monroe County 2942: 2941: 2938: 2931: 2929: 2928: 2925: 2924:Keokuk County 2922: 2914: 2905: 2903: 2902:Marion County 2900: 2899: 2896: 2889: 2887: 2886: 2883: 2881: 2878: 2876: 2875:Jasper County 2873: 2872: 2867: 2858: 2853: 2851: 2846: 2844: 2839: 2838: 2835: 2829: 2826: 2825: 2806: 2802: 2799:Leip, David. 2795: 2779: 2773: 2754: 2747: 2741: 2725: 2721: 2715: 2696: 2689: 2683: 2667: 2661: 2645: 2639: 2623: 2617: 2601: 2595: 2579: 2575: 2569: 2562: 2556: 2540: 2536: 2530: 2524: 2523:archive.today 2520: 2517: 2512: 2510: 2493: 2487: 2471: 2467: 2461: 2459: 2457: 2452: 2443: 2440: 2438: 2435: 2434: 2430: 2419: 2407: 2404: 2401: 2398: 2396: 2393: 2390: 2388: 2387: 2383: 2382: 2378: 2375: 2372: 2369: 2367: 2364: 2361: 2359: 2358: 2354: 2353: 2349: 2346: 2343: 2340: 2338: 2335: 2332: 2330: 2329: 2325: 2324: 2320: 2317: 2314: 2311: 2309: 2306: 2303: 2301: 2300: 2296: 2295: 2291: 2288: 2286: 2283: 2280: 2277: 2274: 2272: 2271: 2267: 2266: 2262: 2259: 2257: 2254: 2251: 2248: 2245: 2243: 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1333: 1331: 1330: 1326: 1323: 1322: 1318: 1315: 1313: 1312: 1308: 1305: 1304: 1300: 1297: 1295: 1294: 1290: 1287: 1286: 1282: 1279: 1276: 1275: 1271: 1268:partially in 1265: 1264: 1260: 1257: 1256: 1252: 1249: 1247: 1246: 1242: 1239: 1238: 1234: 1231: 1229: 1228: 1224: 1221: 1218: 1217: 1213: 1210: 1207: 1204: 1203: 1200: 1199: 1196: 1192: 1190: 1177: 1174: 1172: 1169: 1167: 1164: 1162: 1159: 1157: 1154: 1152: 1149: 1147: 1144: 1142: 1139: 1137: 1134: 1132: 1129: 1127: 1124: 1122: 1119: 1117: 1114: 1112: 1109: 1107: 1104: 1102: 1099: 1097: 1094: 1092: 1089: 1088: 1078: 1075: 1073: 1070: 1068: 1065: 1063: 1060: 1058: 1055: 1054: 1044: 1041: 1039: 1036: 1034: 1031: 1029: 1026: 1024: 1021: 1019: 1016: 1014: 1011: 1009: 1006: 1004: 1001: 999: 996: 995: 983: 981: 977: 972: 968: 965: 960: 959:of any race. 958: 954: 950: 947:, 0.30% from 946: 942: 938: 934: 930: 926: 922: 918: 908: 900: 893: 889: 884: 871: 857: 853: 851: 848: 844: 840: 838: 835: 833: 829: 825: 823: 820: 818: 814: 810: 808: 805: 803: 799: 795: 793: 790: 788: 784: 780: 778: 775: 773: 769: 765: 763: 760: 758: 754: 750: 748: 745: 743: 739: 735: 733: 730: 728: 724: 720: 718: 715: 713: 709: 705: 703: 700: 698: 694: 690: 688: 685: 683: 679: 675: 673: 670: 668: 664: 660: 658: 655: 653: 649: 645: 643: 640: 638: 634: 630: 628: 625: 623: 619: 615: 613: 610: 608: 604: 600: 598: 595: 593: 589: 585: 583: 580: 578: 574: 554: 540: 539:Marion County 537: 534: 533:Monroe County 531: 528: 525: 522: 521:Keokuk County 519: 516: 513: 510: 509:Jasper County 507: 506: 498: 495: 494: 486: 482: 478: 476: 472: 468: 466: 462: 458: 456: 452: 448: 446: 442: 438: 436: 432: 428: 427: 421: 419: 409: 407: 402: 400: 396: 392: 383: 378: 374: 372: 368: 367:Chief Mahaska 358: 356: 351: 349: 345: 341: 337: 333: 329: 325: 316: 308: 304: 301: 298: 294: 290: 286: 283: 279: 273: 269: 265: 262: 260: 256: 252: 248: 244: 240: 235: 231: 227: 223: 219: 215: 211: 206: 202: 198: 195: 192: 190: 186: 183: 182:Chief Mahaska 180: 178: 174: 170: 166: 163: 152: 148: 144:United States 134: 130: 125: 97:Coordinates: 95: 91: 85: 80: 76: 70: 65: 60: 59:Henry C. Koch 56: 52: 46: 41: 37: 32: 25: 19: 4300: 4282: 4086: 3729:Marshalltown 3684:Cedar Rapids 3351: 3235:Indianapolis 3190:Spring Creek 3016: 2995: 2912: 2808:. Retrieved 2804: 2794: 2782:. Retrieved 2772: 2760:. Retrieved 2740: 2728:. Retrieved 2724:the original 2714: 2702:. Retrieved 2682: 2670:. Retrieved 2660: 2648:. Retrieved 2638: 2626:. Retrieved 2616: 2604:. Retrieved 2594: 2582:. Retrieved 2568: 2555: 2543:. Retrieved 2539:the original 2529: 2496:. Retrieved 2486: 2474:. Retrieved 2469: 2394: 2384: 2365: 2355: 2336: 2326: 2307: 2297: 2284: 2268: 2255: 2239: 2220: 2210: 2191: 2181: 2162: 2152: 2139: 2123: 2110: 2094: 2075: 2065: 2046: 2036: 2023: 2007: 1988: 1978: 1959: 1949: 1930: 1920: 1907: 1891: 1872: 1862: 1843: 1833: 1814: 1804: 1785: 1775: 1756: 1746: 1727: 1717: 1698: 1688: 1669: 1659: 1640: 1630: 1611: 1601: 1582: 1572: 1553: 1543: 1524: 1514: 1495: 1485: 1427: 1407: 1387: 1381: 1363: 1345: 1327: 1309: 1291: 1267: 1261: 1243: 1225: 1222: 1197: 1194: 1193: 1186: 1161:Spring Creek 1067:Indianapolis 980:poverty line 973: 969: 961: 914: 906: 897: 546:Demographics 415: 403: 394: 390: 387: 381: 364: 352: 338:. As of the 323: 322: 200:Largest city 18: 4322: / 3862:Cerro Gordo 3832:Buena Vista 3679:Cedar Falls 3636:Quad Cities 3626:Loess Hills 3616:Honey Lands 3558:State Parks 3531:Libertarian 3499:LGBT rights 3482:Legislature 3445:Environment 3416:Delegations 3371:Archaeology 3289:Iowa portal 3260:Union Mills 3217:communities 3037:Barnes City 3012:County seat 2784:January 31, 2545:January 20, 2429:Iowa portal 1383:Barnes City 1198:county seat 1189:2020 census 998:Barnes City 986:Communities 949:other races 911:2000 census 903:2010 census 878:2020 census 846:2023 (est.) 535:(southwest) 529:(southeast) 511:(northwest) 406:Muchakinock 391:Iowa Herald 344:county seat 340:2020 census 119: / 4337:Categories 4310:92°38′44″W 4307:41°20′02″N 4257:Winneshiek 4237:Washington 4157:Pocahontas 4122:Montgomery 3922:Des Moines 3812:Black Hawk 3749:Sioux City 3734:Mason City 3714:Fort Dodge 3704:Des Moines 3674:Burlington 3669:Bettendorf 3536:Republican 3526:Democratic 3376:Area codes 3353:Des Moines 3069:New Sharon 2762:August 15, 2476:August 12, 2470:census.gov 2448:References 1477:No.  1471:No.  1465:No.  1454:Democratic 1449:Republican 1245:New Sharon 1028:New Sharon 915:As of the 371:Iowa tribe 332:U.S. state 237:Population 107:92°38′44″W 104:41°20′02″N 51:courthouse 4252:Winnebago 4222:Van Buren 4172:Poweshiek 4147:Palo Alto 4127:Muscatine 4032:Jefferson 3927:Dickinson 3872:Chickasaw 3797:Appanoose 3792:Allamakee 3754:Urbandale 3739:Muscatine 3719:Iowa City 3699:Davenport 3641:Siouxland 3433:Elections 3356:(capital) 3274:Footnotes 3205:White Oak 3150:Jefferson 3125:Black Oak 3112:Townships 3085:Rose Hill 3074:Oskaloosa 3048:Eddyville 3019:Oskaloosa 2810:April 27, 2584:April 23, 1365:Rose Hill 1263:Eddyville 1227:Oskaloosa 1176:White Oak 1121:Jefferson 1096:Black Oak 1084:Townships 1038:Rose Hill 1033:Oskaloosa 1008:Eddyville 412:Geography 348:Oskaloosa 259:Time zone 203:Oskaloosa 194:Oskaloosa 177:Named for 4262:Woodbury 4177:Ringgold 4152:Plymouth 4107:Mitchell 4097:Marshall 4007:Humboldt 3992:Harrison 3977:Hamilton 3952:Franklin 3917:Delaware 3897:Crawford 3867:Cherokee 3827:Buchanan 3774:Counties 3759:Waterloo 3460:Gun laws 3455:Governor 3438:Caucuses 3426:Senators 3230:Hopewell 3180:Richland 3145:Harrison 3140:Garfield 3064:Leighton 2753:Archived 2730:July 20, 2704:July 20, 2695:Archived 2672:July 20, 2650:July 20, 2628:July 20, 2606:April 2, 2519:Archived 2415:See also 1424:Politics 1347:Leighton 1151:Richland 1116:Harrison 1111:Garfield 1062:Hopewell 1023:Leighton 953:Hispanic 943:, 0.03% 939:, 0.86% 935:, 0.19% 927:, 0.64% 4247:Webster 4227:Wapello 4137:Osceola 4132:O'Brien 4087:Mahaska 4082:Madison 4052:Kossuth 4037:Johnson 4022:Jackson 3982:Hancock 3972:Guthrie 3957:Fremont 3942:Fayette 3932:Dubuque 3912:Decatur 3892:Clinton 3887:Clayton 3847:Carroll 3842:Calhoun 3802:Audubon 3744:Ottumwa 3709:Dubuque 3689:Clinton 3583:Regions 3568:Symbols 3504:Museums 3465:History 3391:Capitol 3245:Lakonta 3175:Prairie 3160:Madison 3155:Lincoln 3054:Fremont 2559:Map of 2498:June 7, 2402:47.33% 2373:43.26% 2344:33.30% 2315:44.27% 2292:33.96% 2278:26.09% 2249:48.14% 2228:31.98% 2205:29.02% 2199:15.87% 2170:30.00% 2133:43.45% 2104:44.94% 2083:48.07% 2054:46.19% 2017:46.93% 1996:32.50% 1967:35.93% 1938:34.36% 1901:37.11% 1880:37.32% 1851:33.86% 1822:47.20% 1793:38.29% 1764:39.90% 1735:47.76% 1712:15.42% 1706:36.24% 1677:41.80% 1648:35.31% 1619:35.33% 1590:40.83% 1561:38.71% 1532:24.63% 1503:25.38% 1293:Fremont 1235:11,558 1146:Prairie 1131:Madison 1126:Lincoln 1077:Lakonta 1013:Fremont 517:(north) 491:Transit 369:of the 361:History 306:Website 268:Central 168:Founded 132:Country 4272:Wright 4232:Warren 4212:Taylor 4192:Shelby 4117:Monroe 4112:Monona 4092:Marion 4067:Louisa 4047:Keokuk 4027:Jasper 4002:Howard 3987:Hardin 3967:Grundy 3962:Greene 3902:Dallas 3877:Clarke 3837:Butler 3822:Bremer 3807:Benton 3724:Marion 3664:Ankeny 3509:People 3492:Senate 3363:Topics 3265:Wright 3250:Peoria 3165:Monroe 3043:Beacon 3029:Cities 2408:1.98% 2399:3,974 2395:50.69% 2391:4,256 2379:2.84% 2370:3,596 2366:53.90% 2362:4,480 2350:7.12% 2341:2,287 2337:59.57% 2333:4,091 2321:7.22% 2312:3,035 2308:48.51% 2304:3,326 2289:2,190 2285:39.95% 2281:2,576 2275:1,682 2263:3.60% 2256:48.26% 2252:3,151 2246:3,143 2234:3.47% 2225:3,339 2221:64.55% 2217:6,739 2202:3,060 2196:1,673 2192:55.11% 2188:5,810 2176:0.91% 2167:3,200 2163:69.09% 2159:7,368 2147:4.41% 2140:52.14% 2136:5,586 2130:4,655 2118:3.09% 2111:51.97% 2107:6,094 2101:5,270 2089:0.81% 2080:5,757 2076:51.12% 2072:6,123 2060:2.95% 2051:4,652 2047:50.86% 2043:5,123 2031:5.15% 2024:47.92% 2020:4,327 2014:4,238 2002:3.55% 1993:3,745 1989:63.95% 1985:7,369 1973:1.86% 1964:3,965 1960:62.21% 1956:6,864 1944:0.24% 1935:3,746 1931:65.40% 1927:7,129 1915:0.22% 1908:62.68% 1904:6,396 1898:3,787 1886:5.81% 1877:3,721 1873:56.87% 1869:5,670 1857:2.32% 1848:3,382 1844:63.82% 1840:6,374 1828:1.42% 1819:4,838 1815:51.38% 1811:5,267 1799:7.19% 1790:3,968 1786:54.52% 1782:5,650 1770:0.97% 1761:4,107 1757:59.13% 1753:6,086 1741:0.76% 1732:4,451 1728:51.48% 1724:4,798 1709:1,580 1703:3,714 1699:48.34% 1695:4,953 1683:8.18% 1674:3,737 1670:50.03% 1666:4,473 1654:2.12% 1645:3,370 1641:62.57% 1637:5,971 1625:0.75% 1616:3,790 1612:63.93% 1608:6,858 1596:1.82% 1587:4,464 1583:57.35% 1579:6,271 1567:2.04% 1558:4,213 1554:59.25% 1550:6,448 1538:5.46% 1529:2,619 1525:69.90% 1521:7,432 1509:1.87% 1500:2,894 1496:72.76% 1492:8,297 1329:Beacon 1270:Monroe 1253:1,262 1136:Monroe 1003:Beacon 991:Cities 957:Latino 917:census 849:21,874 836:22,190 821:22,381 806:22,335 791:21,532 776:22,867 761:22,177 746:23,602 731:24,672 716:26,485 701:25,804 691:−12.0% 686:26,270 676:−12.9% 671:29,860 656:34,273 641:28,805 626:25,202 611:22,508 601:147.4% 596:14,816 556:Census 541:(west) 523:(east) 384:(1882) 328:county 245:22,190 159:  142:  36:County 4267:Worth 4242:Wayne 4217:Union 4202:Story 4197:Sioux 4187:Scott 4102:Mills 4072:Lucas 4042:Jones 3997:Henry 3947:Floyd 3937:Emmet 3907:Davis 3857:Cedar 3817:Boone 3787:Adams 3782:Adair 3487:House 3477:Index 3411:Crime 3339:State 3255:Tioga 3240:Lacey 3225:Cedar 3195:Union 3185:Scott 3130:Cedar 3120:Adams 3079:Pella 2756:(PDF) 2749:(PDF) 2698:(PDF) 2691:(PDF) 1445:Year 1414:City 1396:City 1370:City 1352:City 1334:City 1316:City 1298:City 1280:City 1250:City 1232:City 1205:Rank 1166:Union 1156:Scott 1101:Cedar 1091:Adams 1072:Lacey 1057:Cedar 941:Asian 929:Black 925:White 854:−1.4% 841:−0.9% 796:−5.8% 766:−6.0% 751:−4.3% 736:−6.8% 706:−1.8% 661:19.0% 646:14.3% 631:12.0% 616:51.9% 581:5,989 326:is a 285:UTC−5 264:UTC−6 150:State 4207:Tama 4162:Polk 4142:Page 4077:Lyon 4062:Linn 4017:Iowa 3882:Clay 3852:Cass 3659:Ames 3543:Seal 3450:Flag 3401:Code 3343:Iowa 2812:2018 2786:2008 2764:2022 2732:2014 2706:2014 2674:2014 2652:2014 2630:2014 2608:2024 2586:2011 2547:2008 2500:2011 2478:2021 2405:166 2386:1896 2376:236 2357:1900 2347:489 2328:1904 2318:495 2299:1908 2270:1912 2260:235 2241:1916 2231:362 2212:1920 2183:1924 2154:1928 2144:472 2125:1932 2115:362 2096:1936 2067:1940 2057:297 2038:1944 2028:465 2009:1948 1999:409 1980:1952 1970:205 1951:1956 1922:1960 1893:1964 1883:579 1864:1968 1854:232 1835:1972 1825:146 1806:1976 1796:745 1777:1980 1767:100 1748:1984 1719:1988 1690:1992 1680:731 1661:1996 1651:202 1632:2000 1603:2004 1593:199 1574:2008 1564:222 1545:2012 1535:581 1516:2016 1506:213 1487:2020 1417:110 1399:156 1373:157 1355:158 1337:445 1319:487 1301:708 1283:970 1272:and 832:2020 826:0.2% 817:2010 811:3.7% 802:2000 787:1990 781:3.1% 772:1980 757:1970 742:1960 727:1950 721:2.6% 712:1940 697:1930 682:1920 667:1910 652:1900 637:1890 622:1880 607:1870 592:1860 577:1850 565:Note 560:Pop. 336:Iowa 315:.gov 208:Area 189:Seat 162:Iowa 90:U.S. 75:Iowa 55:NRHP 49:The 4182:Sac 4057:Lee 4012:Ida 3341:of 2173:97 2086:97 1941:26 1912:22 1738:71 1622:80 1404:10 955:or 931:or 892:ACS 346:is 334:of 311:www 300:2nd 289:CDT 278:DST 4339:: 3015:: 3000:, 2803:. 2576:. 2508:^ 2468:. 2455:^ 1480:% 1436:. 1393:) 1378:9 1360:8 1342:7 1324:6 1306:5 1288:4 1277:) 1258:3 1240:2 1219:1 570:%± 357:. 350:. 3331:e 3324:t 3317:v 3081:‡ 3050:‡ 3039:‡ 2987:e 2980:t 2973:v 2856:e 2849:t 2842:v 2814:. 2788:. 2766:. 2734:. 2708:. 2676:. 2654:. 2632:. 2610:. 2588:. 2549:. 2502:. 2480:. 1474:% 1468:% 1386:( 1266:( 1223:† 1195:† 586:— 291:) 287:( 280:) 270:) 266:( 61:.

Index

County
The courthouse in Oskaloosa, built 1886, is on the NRHP. The architect was Henry C. Koch.
courthouse
NRHP
Henry C. Koch
Map of Iowa highlighting Mahaska County
Iowa
Map of the United States highlighting Iowa
U.S.
41°20′02″N 92°38′44″W / 41.333888888889°N 92.645555555556°W / 41.333888888889; -92.645555555556
Iowa
Named for
Chief Mahaska
Seat
Oskaloosa
Time zone
UTC−6
Central
DST
UTC−5
CDT
2nd
www.mahaskacountyia.gov
county
U.S. state
Iowa
2020 census
county seat
Oskaloosa
Micropolitan Statistical Area

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