| City | Population |
| Addieville village, IL | 252 |
| Albers village, IL | 1,190 |
| Alhambra village, IL | 681 |
| Alma village, IL | 320 |
| Alorton village, IL | 2,002 |
| Alton, IL | 27,865 |
| Ashley, IL | 536 |
| Aviston village, IL | 1,945 |
| Baldwin village, IL | 373 |
| Bartelso village, IL | 595 |
| Batchtown village, IL | 214 |
| Beckemeyer village, IL | 1,040 |
| Belleville, IL | 44,478 |
| Benld, IL | 1,556 |
| Bethalto village, IL | 9,521 |
| Bond County rural, IL | 8,146 |
| Breese, IL | 4,442 |
| Brighton village, IL | 2,254 |
| Brooklyn village, IL | 749 |
| Brussels village, IL | 141 |
| Bunker Hill, IL | 1,774 |
| Butler village, IL | 180 |
| Cahokia village, IL | 15,241 |
| Calhoun County rural, IL | 3,311 |
| Carlinville, IL | 5,917 |
| Carlyle, IL | 3,281 |
| Carrollton, IL | 2,484 |
| Caseyville village, IL | 4,245 |
| Central City village, IL | 1,172 |
| Centralia, IL | 13,032 |
| Centreville, IL | 5,309 |
| Chesterfield village, IL | 188 |
| Clinton County rural, IL | 16,768 |
| Coffeen, IL | 685 |
| Collinsville, IL | 25,579 |
| Columbia, IL | 9,707 |
| Coulterville village, IL | 945 |
| Cutler village, IL | 441 |
| Damiansville village, IL | 491 |
| Darmstadt, IL | 68 |
| Dix village, IL | 461 |
| Donnellson village, IL | 210 |
| Dorchester village, IL | 151 |
| Du Bois village, IL | 205 |
| Dupo village, IL | 4,138 |
| Eagarville village, IL | 127 |
| East Alton village, IL | 6,301 |
| East Carondelet village, IL | 499 |
| East Gillespie village, IL | 270 |
| East St. Louis, IL | 27,006 |
| Edwardsville, IL | 24,293 |
| Eldred village, IL | 201 |
| Ellis Grove village, IL | 363 |
| Elsah village, IL | 673 |
| Evansville village, IL | 701 |
| Fairmont City village, IL | 2,635 |
| Fairview Heights, IL | 17,078 |
| Fayetteville village, IL | 366 |
| Fidelity village, IL | 114 |
| Fieldon village, IL | 239 |
| Fillmore village, IL | 330 |
| Floraville, IL | 53 |
| Freeburg village, IL | 4,354 |
| Fults village, IL | 26 |
| Germantown village, IL | 1,269 |
| Gillespie, IL | 3,319 |
| Glen Carbon village, IL | 12,934 |
| Godfrey village, IL | 17,982 |
| Grafton, IL | 674 |
| Granite City, IL | 29,849 |
| Grantfork village, IL | 337 |
| Greene County rural, IL | 4,854 |
| Greenfield, IL | 1,071 |
| Greenville, IL | 7,000 |
| Hamburg village, IL | 128 |
| Hamel village, IL | 816 |
| Hardin village, IL | 967 |
| Hartford village, IL | 1,429 |
| Hecker village, IL | 481 |
| Hettick village, IL | 181 |
| Highland, IL | 9,919 |
| Hillsboro, IL | 6,207 |
| Hillview village, IL | 193 |
| Hoffman village, IL | 508 |
| Holiday Shores, IL | 2,882 |
| Hoyleton village, IL | 531 |
| Huey village, IL | 169 |
| Irvington village, IL | 659 |
| Iuka village, IL | 489 |
| Jersey County rural, IL | 12,694 |
| Jerseyville, IL | 8,465 |
| Junction City village, IL | 482 |
| Kampsville village, IL | 328 |
| Kane village, IL | 438 |
| Kaskaskia village, IL | 14 |
| Kell village, IL | 219 |
| Keyesport village, IL | 421 |
| Kinmundy, IL | 796 |
| Lake Ka-Ho village, IL | 237 |
| Lebanon, IL | 4,418 |
| Lenzburg village, IL | 521 |
| Litchfield, IL | 6,939 |
| Livingston village, IL | 858 |
| Macoupin County rural, IL | 15,016 |
| Madison, IL | 3,891 |
| Madison County rural, IL | 45,147 |
| Maeystown village, IL | 157 |
| Marine village, IL | 960 |
| Marion County rural, IL | 12,271 |
| Marissa village, IL | 1,979 |
| Maryville village, IL | 7,487 |
| Mascoutah, IL | 7,483 |
| Medora village, IL | 419 |
| Millstadt village, IL | 4,011 |
| Mitchell, IL | 1,356 |
| Monroe County rural, IL | 11,512 |
| Montgomery County rural, IL | 7,521 |
| Mount Clare village, IL | 278 |
| Mount Olive, IL | 2,099 |
| Mulberry Grove village, IL | 634 |
| Nashville, IL | 3,258 |
| New Athens village, IL | 2,054 |
| New Baden village, IL | 3,349 |
| New Douglas village, IL | 319 |
| New Minden village, IL | 215 |
| O'Fallon, IL | 28,281 |
| Oakdale village, IL | 221 |
| Odin village, IL | 1,076 |
| Okawville village, IL | 1,434 |
| Old Ripley village, IL | 108 |
| Otterville town, IL | 126 |
| Paderborn, IL | 43 |
| Panama village, IL | 343 |
| Patoka village, IL | 584 |
| Pearl village, IL | 138 |
| Percy village, IL | 970 |
| Pierron village, IL | 600 |
| Pleasant Hill village, IL | 966 |
| Pocahontas village, IL | 784 |
| Pontoon Beach village, IL | 5,836 |
| Prairie du Rocher village, IL | 604 |
| Radom village, IL | 220 |
| Randolph County rural, IL | 9,544 |
| Red Bud, IL | 3,698 |
| Rentchler, IL | 34 |
| Richview village, IL | 253 |
| Rockbridge village, IL | 169 |
| Roodhouse, IL | 1,814 |
| Rosewood Heights, IL | 4,038 |
| Roxana village, IL | 1,542 |
| Royal Lakes village, IL | 197 |
| Ruma village, IL | 317 |
| Salem, IL | 7,485 |
| Sandoval village, IL | 1,274 |
| Sauget village, IL | 159 |
| Sawyerville village, IL | 279 |
| Schram City village, IL | 586 |
| Scott AFB, IL | 3,612 |
| Shiloh village, IL | 12,651 |
| Shipman town, IL | 624 |
| Smithboro village, IL | 177 |
| Smithton village, IL | 3,693 |
| Sorento village, IL | 498 |
| South Roxana village, IL | 2,053 |
| Sparta, IL | 4,302 |
| St. Clair County rural, IL | 54,204 |
| St. Jacob village, IL | 1,098 |
| St. Libory village, IL | 615 |
| St. Peter village, IL | 359 |
| Staunton, IL | 5,139 |
| Steeleville village, IL | 2,083 |
| Summerfield village, IL | 451 |
| Swansea village, IL | 13,430 |
| Taylor Springs village, IL | 690 |
| Tilden village, IL | 934 |
| Trenton, IL | 2,715 |
| Troy, IL | 9,888 |
| Valmeyer village, IL | 1,263 |
| Venedy village, IL | 138 |
| Venice, IL | 1,890 |
| Vernon village, IL | 129 |
| Walnut Hill village, IL | 108 |
| Walshville village, IL | 64 |
| Wamac, IL | 1,185 |
| Washington County rural, IL | 5,609 |
| Washington Park village, IL | 4,196 |
| Waterloo, IL | 9,811 |
| White City village, IL | 232 |
| White Hall, IL | 2,520 |
| Williamson village, IL | 230 |
| Wilmington village, IL | 142 |
| Wilsonville village, IL | 586 |
| Wood River, IL | 10,657 |
| Woodlawn village, IL | 698 |
| Worden village, IL | 1,044 |
| Affton, MO | 20,307 |
| Annada village, MO | 29 |
| Arcadia, MO | 608 |
| Arnold, MO | 20,808 |
| Ashley, MO | 90 |
| Augusta town, MO | 253 |
| Ballwin, MO | 30,404 |
| Barnhart, MO | 5,682 |
| Bel-Nor village, MO | 1,499 |
| Bel-Ridge village, MO | 2,737 |
| Bella Villa, MO | 729 |
| Bellefontaine Neighbors, MO | 10,860 |
| Bellerive village, MO | 188 |
| Bellflower, MO | 393 |
| Berger, MO | 221 |
| Berkeley, MO | 8,978 |
| Beverly Hills, MO | 574 |
| Bismarck, MO | 1,546 |
| Black Jack, MO | 6,929 |
| Bloomsdale, MO | 521 |
| Bonne Terre, MO | 6,864 |
| Bourbon, MO | 1,632 |
| Breckenridge Hills, MO | 4,746 |
| Brentwood, MO | 8,055 |
| Bridgeton, MO | 11,550 |
| Byrnes Mill, MO | 2,781 |
| Caledonia village, MO | 130 |
| Calverton Park village, MO | 1,293 |
| Castle Point, MO | 3,962 |
| Cave town, MO | 5 |
| Cedar Hill, MO | 1,721 |
| Cedar Hill Lakes village, MO | 237 |
| Chain of Rocks village, MO | 93 |
| Champ village, MO | 13 |
| Charlack, MO | 1,363 |
| Chesterfield, MO | 47,484 |
| Clarkson Valley, MO | 2,632 |
| Clarksville, MO | 442 |
| Clayton, MO | 15,939 |
| Concord, MO | 16,421 |
| Cool Valley, MO | 1,196 |
| Cottleville, MO | 3,075 |
| Country Club Hills, MO | 1,274 |
| Country Life Acres village, MO | 74 |
| Crawford County rural, MO | 17,568 |
| Crestwood, MO | 11,912 |
| Creve Coeur, MO | 17,833 |
| Crystal City, MO | 4,855 |
| Crystal Lake Park, MO | 470 |
| Cuba, MO | 3,356 |
| Dardenne Prairie, MO | 11,494 |
| De Soto, MO | 6,400 |
| Defiance, MO | 155 |
| Dellwood, MO | 5,025 |
| Des Peres, MO | 8,373 |
| Desloge, MO | 5,054 |
| Edmundson, MO | 834 |
| Ellisville, MO | 9,133 |
| Elsberry, MO | 1,934 |
| Eolia village, MO | 522 |
| Eureka, MO | 10,189 |
| Fenton, MO | 4,022 |
| Ferguson, MO | 21,203 |
| Festus, MO | 11,602 |
| Flint Hill, MO | 525 |
| Flordell Hills, MO | 822 |
| Florissant, MO | 52,158 |
| Foley, MO | 161 |
| Foristell, MO | 505 |
| Fountain N' Lakes village, MO | 165 |
| Frankclay, MO | 221 |
| Franklin County rural, MO | 48,268 |
| Frontenac, MO | 3,482 |
| Gerald, MO | 1,345 |
| Glasgow Village, MO | 5,429 |
| Glen Echo Park village, MO | 160 |
| Glendale, MO | 5,925 |
| Grantwood Village town, MO | 863 |
| Gray Summit, MO | 2,701 |
| Grayhawk, MO | 525 |
| Green Park, MO | 2,622 |
| Greendale, MO | 651 |
| Hanley Hills village, MO | 2,101 |
| Hawk Point, MO | 669 |
| Hazelwood, MO | 25,703 |
| Herculaneum, MO | 3,468 |
| High Hill, MO | 195 |
| High Ridge, MO | 4,305 |
| Hillsboro, MO | 2,821 |
| Hillsdale village, MO | 1,478 |
| Horine, MO | 821 |
| Huntleigh, MO | 334 |
| Imperial, MO | 4,709 |
| Innsbrook village, MO | 552 |
| Iron County rural, MO | 6,601 |
| Iron Mountain Lake, MO | 737 |
| Irondale, MO | 445 |
| Ironton, MO | 1,460 |
| Jefferson County rural, MO | 131,205 |
| Jennings, MO | 14,712 |
| Jonesburg, MO | 768 |
| Josephville village, MO | 376 |
| Kimmswick, MO | 157 |
| Kinloch, MO | 298 |
| Kirkwood, MO | 27,540 |
| LaBarque Creek, MO | 1,558 |
| Ladue, MO | 8,521 |
| Lake St. Louis, MO | 14,545 |
| Lake Tekakwitha village, MO | 254 |
| Lakeshire, MO | 1,432 |
| Leadwood, MO | 1,282 |
| Leasburg village, MO | 338 |
| Lemay, MO | 16,645 |
| Leslie village, MO | 171 |
| Lincoln County rural, MO | 34,468 |
| Mackenzie village, MO | 134 |
| Manchester, MO | 18,094 |
| Maplewood, MO | 8,046 |
| Marlborough village, MO | 2,179 |
| Marthasville, MO | 1,136 |
| Maryland Heights, MO | 27,472 |
| Mehlville, MO | 28,380 |
| Middletown town, MO | 167 |
| Mineral Point town, MO | 351 |
| Miramiguoa Park village, MO | 120 |
| Moline Acres, MO | 2,442 |
| Moscow Mills, MO | 2,509 |
| Murphy, MO | 8,690 |
| New Haven, MO | 2,089 |
| New Melle, MO | 475 |
| Normandy, MO | 5,008 |
| Northwoods, MO | 4,227 |
| Norwood Court town, MO | 959 |
| O'Fallon, MO | 79,329 |
| Oak Grove Village village, MO | 509 |
| Oakland, MO | 1,381 |
| Oakville, MO | 36,143 |
| Old Jamestown, MO | 19,184 |
| Old Monroe, MO | 265 |
| Olivette, MO | 7,737 |
| Olympian Village, MO | 774 |
| Overland, MO | 16,062 |
| Owensville, MO | 2,676 |
| Pacific, MO | 7,002 |
| Pagedale, MO | 3,304 |
| Parkdale village, MO | 170 |
| Parkway village, MO | 439 |
| Pasadena Hills, MO | 930 |
| Pasadena Park village, MO | 470 |
| Paynesville village, MO | 77 |
| Peaceful Village village, MO | 9 |
| Pendleton village, MO | 43 |
| Pevely, MO | 5,484 |
| Pilot Knob, MO | 746 |
| Pine Lawn, MO | 3,275 |
| Portage Des Sioux, MO | 328 |
| Potosi, MO | 2,660 |
| Richmond Heights, MO | 8,603 |
| Riverview village, MO | 2,856 |
| Rock Hill, MO | 4,635 |
| Rosebud, MO | 409 |
| Sappington, MO | 7,580 |
| Scotsdale town, MO | 222 |
| Shrewsbury, MO | 6,254 |
| Silex village, MO | 187 |
| Spanish Lake, MO | 19,650 |
| St. Ann, MO | 13,020 |
| St. Charles, MO | 65,794 |
| St. Charles County rural, MO | 94,606 |
| St. Clair, MO | 4,724 |
| St. Clement, MO | 78 |
| St. Cloud village, MO | 41 |
| St. George, MO | 1,337 |
| St. John, MO | 6,517 |
| St. Louis, MO | 319,294 |
| St. Louis County rural, MO | 147,091 |
| St. Paul, MO | 1,829 |
| St. Peters, MO | 52,575 |
| Ste. Genevieve, MO | 4,410 |
| Ste. Genevieve County rural, MO | 12,013 |
| Steelville, MO | 1,642 |
| Sullivan, MO | 7,081 |
| Sunset Hills, MO | 8,496 |
| Sycamore Hills village, MO | 668 |
| Terre du Lac, MO | 2,320 |
| Three Creeks village, MO | 6 |
| Town and Country, MO | 10,815 |
| Troy, MO | 10,540 |
| Truesdale, MO | 732 |
| Truxton village, MO | 91 |
| Twin Oaks village, MO | 392 |
| Union, MO | 10,204 |
| University City, MO | 35,371 |
| Uplands Park village, MO | 445 |
| Valley Park, MO | 6,942 |
| Velda City, MO | 1,420 |
| Velda Village Hills village, MO | 1,055 |
| Viburnum, MO | 693 |
| Villa Ridge, MO | 2,636 |
| Vinita Park, MO | 1,880 |
| Vinita Terrace village, MO | 277 |
| Warren County rural, MO | 18,540 |
| Warrenton, MO | 7,880 |
| Warson Woods, MO | 1,962 |
| Washington, MO | 13,982 |
| Washington County rural, MO | 21,609 |
| Webster Groves, MO | 22,995 |
| Weingarten, MO | 133 |
| Weldon Spring, MO | 5,443 |
| Weldon Spring Heights town, MO | 91 |
| Wellston, MO | 2,313 |
| Wentzville, MO | 29,070 |
| West Alton, MO | 522 |
| West Sullivan town, MO | 119 |
| Westwood village, MO | 278 |
| Whiteside village, MO | 75 |
| Wilbur Park village, MO | 471 |
| Wildwood, MO | 35,517 |
| Winchester, MO | 1,547 |
| Winfield, MO | 1,404 |
| Woodson Terrace, MO | 4,063 |
| Wortham, MO | 275 |
| Wright City, MO | 3,119 |
| | |
| Total | 3,002,230 |
