22:
77:
in 1947, the state of
Illinois was divided into four numbering plan areas (NPAs). They were generally laid out as a region in and around Chicago, a northern band outside Chicago, and two bands in the central and southern parts of the state. 815 was assigned to the northern band outside Chicago as one
85:
After
September 1956, the 815 numbering plan area was divided roughly in half along a north-westerly to south-easterly running line. Area code 309 was created by merging the western part of 815, including the Illinois side of the Quad Cities, with the northern portion of
52:
area and some of
Chicago’s western and northwestern suburbs. 815 was one of the four original Illinois area codes set up in 1947. Area code 779 was assigned to the same numbering plan area in 2009 to form an
1683:
1678:
1359:
1639:
1693:
94:
in the middle position of the code. It was the only new area code created in
Illinois between 1947 and the 1989 creation of
549:
209:
79:
1306:
1688:
1425:
37:
629:
1364:
1336:
1206:
1161:
454:
90:. The new area code was one of the first area codes not serving an entire state, but having the digit
1186:
994:
669:
739:
654:
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459:
344:
70:
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569:
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389:
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314:
1331:
924:
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284:
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134:
74:
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144:
8:
1341:
1321:
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409:
384:
349:
274:
259:
224:
194:
169:
66:
1397:
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1216:
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1201:
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849:
719:
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619:
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249:
174:
1346:
1326:
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1221:
1181:
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1034:
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979:
959:
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864:
829:
819:
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724:
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614:
554:
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534:
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364:
309:
289:
269:
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119:
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41:
1387:. American Telephone and Telegraph Company. September 1956. p. Sec II-App A-1.
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1111:
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1009:
934:
929:
914:
899:
884:
869:
844:
824:
734:
714:
694:
674:
609:
559:
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504:
499:
474:
469:
419:
414:
404:
379:
374:
359:
324:
279:
229:
164:
154:
149:
139:
129:
49:
1256:
919:
904:
834:
774:
744:
599:
479:
424:
369:
339:
294:
254:
219:
124:
974:
964:
889:
699:
624:
399:
329:
1672:
1654:
1641:
1629:
1625:
1621:
1617:
1613:
1598:
1594:
1586:
1582:
1559:
1555:
1503:
1490:
1473:
1461:
1445:
689:
95:
87:
109:
beginning on
February 17, 2007. A month later, area code 779 was activated.
102:
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1417:
45:
21:
1551:
33:
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with the new area code 779, all calls from the 815 area
1684:Telecommunications-related introductions in 2007
1679:Telecommunications-related introductions in 1947
1670:
1360:List of North American Numbering Plan area codes
1418:Area Code Overlay Approved for 815 Area Code
1431:
69:(AT&T) created the first nationwide
67:American Telephone and Telegraph Company
20:
1671:
107:needed to be dialed with an area code
13:
80:original North American area codes
14:
1705:
1406:
1413:NANPA area code map of Illinois
1694:Area codes in the United States
112:
1391:
1377:
1:
1370:
38:North American Numbering Plan
7:
1420:- general information from
1365:List of Illinois area codes
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10:
1710:
60:
48:areas. It also serves the
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1577:
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1385:Notes on Distance Dialing
1398:History of area code 309
71:telephone numbering plan
25:All NPAs within Illinois
1655:40.195659°N 89.516602°W
1689:Area codes in Illinois
30:Area codes 815 and 779
26:
1660:40.195659; -89.516602
101:In preparation of an
75:Operator Toll Dialing
24:
16:Telephone area codes
1651: /
1476:
40:(NANP) for most of
1432:
27:
1635:
1634:
1428:for the area code
1337:Wonder Lake (CDP)
1207:Sun River Terrace
42:northern Illinois
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1162:South Wilmington
455:Frankfort Square
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1187:Stillman Valley
995:Preston Heights
670:Lakewood Shores
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1407:External links
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32:are telephone
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1317:Wilton Center
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1297:West Brooklyn
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1272:Waddams Grove
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1172:Spring Valley
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990:Prairie Grove
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840:Monroe Center
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810:Milledgeville
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570:Holiday Hills
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495:German Valley
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390:East Brooklyn
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320:Crystal Lawns
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96:area code 708
93:
89:
88:area code 217
83:
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68:
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35:
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23:
19:
1636:
1612:area codes:
1581:area codes:
1554:area codes:
1534:
1513:
1508:
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1482:
1465:
1436:area codes:
1393:
1384:
1379:
1167:Spring Grove
1157:South Beloit
1107:Scales Mound
1059:
1005:Prophetstown
985:Poplar Grove
945:Paynes Point
860:Mount Morris
650:Lake Holiday
595:Ingalls Park
590:Hopkins Park
510:Grand Detour
440:Flagg Center
395:East Dubuque
315:Crystal Lake
113:Service area
103:overlay plan
100:
91:
84:
64:
44:outside the
29:
28:
18:
1658: /
1332:Wonder Lake
925:Orangeville
895:North Utica
875:New Milford
515:Grand Ridge
285:Coltonville
240:Cedar Point
235:Carbon Hill
215:Bull Valley
200:Brush Point
180:Bourbonnais
160:Baileyville
135:Apple River
46:Quad Cities
1673:Categories
1646:89°31′00″W
1643:40°11′44″N
1371:References
1307:Wilmington
1262:Union Hill
1252:Troy Grove
1232:Timberlane
1077:Romeoville
1050:Rock Falls
970:Plainfield
955:Pecatonica
950:Pearl City
815:Millington
770:Marseilles
760:Maple Park
730:Loves Park
710:Lindenwood
685:Leaf River
575:Homer Glen
520:Grant Park
355:Deer Grove
305:Crest Hill
245:Cedarville
205:Buckingham
185:Braceville
145:Aroma Park
78:of the 86
34:area codes
1552:Wisconsin
1342:Woodstock
1322:Winnebago
1147:Shorewood
1045:Rock City
1000:Princeton
880:New Lenox
805:Millbrook
795:Menominee
750:Manhattan
605:Johnsburg
580:Hillcrest
530:Greenwood
525:Granville
450:Frankfort
445:Forreston
410:Elizabeth
385:Earlville
350:Daysville
275:Coal City
260:Channahon
225:Caledonia
195:Braidwood
170:Belvidere
65:When the
1509:779/815
1434:Illinois
1422:AT&T
1354:See also
1287:Waterman
1217:Symerton
1212:Sycamore
1202:Sublette
1197:Streator
1192:Stockton
1177:Sterling
1152:Somonauk
1142:Shirland
1137:Sheridan
1127:Shabbona
1097:Sandwich
1092:St. Anne
1061:Rockford
1055:Rockdale
1040:Rochelle
1030:Ringwood
1020:Richmond
850:Morrison
720:Lockport
665:Lakewood
660:Lakemoor
645:Kirkland
635:Kingston
620:Kankakee
585:Hinckley
565:Herscher
550:Harrison
465:Freeport
435:Fairmont
430:Fairdale
335:Danforth
300:Cortland
250:Chadwick
175:Bonfield
1603:812/930
1591:317/463
1579:Indiana
1572:920/274
1568:715/534
1564:608/353
1543:217/447
1539:309/861
1526:708/464
1522:630/331
1518:847/224
1487:608/353
1470:847/224
1466:815/779
1458:708/464
1454:618/730
1450:630/331
1442:309/861
1438:217/447
1347:Woosung
1327:Winslow
1292:Watseka
1247:Triumph
1227:Thomson
1222:Tampico
1182:Steward
1132:Shannon
1102:Savanna
1087:Rutland
1067:Rockton
1035:Ritchie
1015:Reddick
980:Pontiac
960:Peotone
940:Paw Paw
910:Oglesby
865:Naplate
830:Momence
820:Minooka
800:Meriden
790:Mendota
785:McHenry
765:Marengo
755:Manteno
725:Lostant
705:Leonore
680:LaSalle
640:Kinsman
615:Kangley
555:Harvard
540:Hanover
535:Haldane
490:Gardner
365:Diamond
310:Creston
290:Compton
270:Clifton
190:Bradley
120:Adeline
61:History
55:overlay
36:in the
1424:, the
1312:Wilton
1302:Wenona
1282:Warren
1277:Walnut
1267:Verona
1242:Tonica
1237:Toluca
1122:Seward
1117:Serena
1112:Seneca
1082:Roscoe
1072:Rodden
1025:Ridott
1010:Ransom
935:Ottawa
930:Oregon
915:Onarga
900:Norway
885:Newark
870:Nelson
845:Morris
825:Mokena
735:Lyndon
715:Lisbon
695:Leland
675:Lanark
610:Joliet
560:Hebron
545:Harmon
505:Godley
500:Gilman
475:Galena
470:Fulton
420:Esmond
415:Elwood
405:Eleroy
380:Dwight
375:Durand
360:DeKalb
325:Dakota
280:Coleta
230:Capron
165:Ballou
155:Ashton
150:Ashkum
140:Argyle
130:Andres
50:Joliet
1535:South
1483:North
1257:Union
920:Oneco
905:Odell
835:Monee
775:Mazon
745:Malta
630:Kings
600:Irwin
480:Genoa
425:Essex
370:Dixon
340:Davis
295:Coral
255:Chana
220:Byron
125:Amboy
1610:Iowa
1514:East
1500:West
1426:RBOC
975:Polo
965:Peru
890:Nora
700:Lena
625:Kent
400:Egan
330:Dana
73:for
1630:712
1626:641
1622:563
1618:515
1614:319
1599:765
1595:574
1587:260
1583:219
1560:414
1556:262
1504:563
1491:262
1474:872
1462:773
1446:312
690:Lee
1675::
1628:,
1624:,
1620:,
1616:,
1601:,
1597:,
1593:,
1589:,
1585:,
1570:,
1566:,
1562:,
1558:,
1541:,
1537::
1524:,
1520:,
1516::
1502::
1489:,
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1472:,
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1464:,
1460:,
1456:,
1452:,
1448:,
1444:,
1440:,
98:.
82:.
57:.
92:0
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