| Missouri | |||||||||
| TOTAL PERSONS | TOTAL HOUSING UNITS | PUBLIC SYSTEM | DRILLED WELL | DUG WELL | OTHER SOURCE | PUBLIC SEWER | SEPTIC TANK | OTHER MEANS | |
| Missouri | 5,117,073 | 2,199,129 | 1,839,532 | 309,678 | 26,920 | 22,999 | 1,617,996 | 532,844 | 48,289 |
| Adair County | 24,577 | 10,097 | 9,689 | 114 | 153 | 141 | 7,330 | 2,065 | 702 |
| Andrew County | 14,632 | 5,841 | 5,011 | 447 | 322 | 61 | 2,303 | 3,447 | 91 |
| Atchison County | 7,457 | 3,298 | 2,426 | 593 | 251 | 28 | 2,061 | 1,172 | 65 |
| Audrain County | 23,599 | 10,039 | 8,380 | 1,189 | 298 | 172 | 7,128 | 2,490 | 421 |
| Barry County | 27,547 | 12,908 | 6,388 | 6,036 | 241 | 243 | 4,210 | 8,333 | 365 |
| Barton County | 11,312 | 5,014 | 4,843 | 107 | 40 | 24 | 2,615 | 2,320 | 79 |
| Bates County | 15,025 | 6,782 | 5,810 | 255 | 469 | 248 | 3,473 | 3,170 | 139 |
| Benton County | 13,859 | 10,280 | 3,598 | 5,944 | 181 | 557 | 1,848 | 7,418 | 1,014 |
| Bollinger County | 10,619 | 4,542 | 829 | 3,062 | 231 | 420 | 684 | 3,126 | 732 |
| Boone County | 112,379 | 44,695 | 42,975 | 1,468 | 163 | 89 | 36,012 | 7,874 | 809 |
| Buchanan County | 83,083 | 35,652 | 35,035 | 338 | 196 | 83 | 29,171 | 6,320 | 161 |
| Butler County | 38,765 | 17,046 | 12,198 | 4,436 | 351 | 61 | 8,885 | 7,960 | 201 |
| Caldwell County | 8,380 | 3,649 | 2,680 | 412 | 430 | 127 | 1,708 | 1,758 | 183 |
| Callaway County | 32,809 | 13,003 | 10,512 | 2,038 | 163 | 290 | 5,494 | 6,213 | 1,296 |
| Camden County | 27,495 | 25,662 | 8,483 | 16,383 | 604 | 192 | 5,759 | 18,670 | 1,233 |
| Cape Girardeau County | 61,633 | 25,315 | 20,960 | 3,621 | 311 | 423 | 18,519 | 6,293 | 503 |
| Carroll County | 10,748 | 5,001 | 4,122 | 379 | 420 | 80 | 2,707 | 2,084 | 210 |
| Carter County | 5,515 | 2,693 | 1,153 | 1,345 | 59 | 136 | 780 | 1,671 | 242 |
| Cass County | 63,808 | 24,337 | 23,020 | 315 | 407 | 595 | 16,192 | 7,946 | 199 |
| Cedar County | 12,093 | 6,035 | 3,847 | 2,119 | 50 | 19 | 2,703 | 3,161 | 171 |
| Chariton County | 9,202 | 4,479 | 3,600 | 408 | 282 | 189 | 2,036 | 2,030 | 413 |
| Christian County | 32,644 | 12,812 | 6,473 | 5,896 | 254 | 189 | 5,060 | 7,487 | 265 |
| Clark County | 7,547 | 3,398 | 2,109 | 547 | 402 | 340 | 1,369 | 1,698 | 331 |
| Clay County | 153,411 | 63,000 | 62,323 | 340 | 139 | 198 | 55,461 | 7,364 | 175 |
| Clinton County | 16,595 | 6,559 | 5,480 | 701 | 262 | 116 | 3,707 | 2,701 | 151 |
| Cole County | 63,579 | 24,939 | 21,055 | 3,543 | 183 | 158 | 18,778 | 5,290 | 871 |
| Cooper County | 14,835 | 6,002 | 4,234 | 1,464 | 169 | 135 | 3,766 | 1,669 | 567 |
| Crawford County | 19,173 | 9,030 | 3,908 | 4,699 | 199 | 224 | 2,867 | 5,566 | 597 |
| Dade County | 7,449 | 3,543 | 2,079 | 1,365 | 65 | 34 | 1,184 | 2,232 | 127 |
| Dallas County | 12,646 | 5,484 | 1,545 | 3,803 | 101 | 35 | 1,466 | 3,813 | 205 |
| Daviess County | 7,865 | 3,613 | 2,775 | 280 | 385 | 173 | 1,306 | 1,931 | 376 |
| DeKalb County | 9,967 | 3,358 | 2,701 | 445 | 166 | 46 | 1,511 | 1,721 | 126 |
| Dent County | 13,702 | 6,115 | 2,687 | 3,125 | 101 | 202 | 2,239 | 3,417 | 459 |
| Douglas County | 11,876 | 5,105 | 1,404 | 3,358 | 99 | 244 | 1,341 | 3,309 | 455 |
| Dunklin County | 33,112 | 14,102 | 12,803 | 1,084 | 185 | 30 | 10,096 | 3,890 | 116 |
| Franklin County | 80,603 | 32,451 | 17,211 | 14,034 | 665 | 541 | 14,281 | 16,683 | 1,487 |
| Gasconade County | 14,006 | 7,158 | 3,629 | 2,869 | 231 | 429 | 2,932 | 3,394 | 832 |
| Gentry County | 6,848 | 3,232 | 2,420 | 510 | 149 | 153 | 1,964 | 927 | 341 |
| Greene County | 207,949 | 87,910 | 75,738 | 11,701 | 360 | 111 | 68,396 | 19,232 | 282 |
| Grundy County | 10,536 | 5,113 | 4,850 | 74 | 110 | 79 | 3,371 | 1,334 | 408 |
| Harrison County | 8,469 | 4,245 | 3,287 | 421 | 329 | 208 | 1,919 | 1,668 | 658 |
| Henry County | 20,044 | 9,317 | 6,724 | 1,844 | 324 | 425 | 6,166 | 2,843 | 308 |
| Hickory County | 7,335 | 5,482 | 1,509 | 3,749 | 120 | 104 | 713 | 4,453 | 316 |
| Holt County | 6,034 | 3,190 | 1,705 | 1,044 | 289 | 152 | 1,394 | 1,665 | 131 |
| Howard County | 9,631 | 4,025 | 3,272 | 243 | 172 | 338 | 2,358 | 1,259 | 408 |
| Howell County | 31,447 | 13,326 | 6,991 | 5,779 | 250 | 306 | 6,167 | 6,365 | 794 |
| Iron County | 10,726 | 4,700 | 2,054 | 2,225 | 158 | 263 | 1,742 | 2,722 | 236 |
| Jackson County | 633,232 | 280,729 | 279,013 | 617 | 215 | 884 | 267,604 | 12,511 | 614 |
| Jasper County | 90,465 | 39,554 | 33,161 | 6,052 | 280 | 61 | 28,835 | 10,529 | 190 |
| Jefferson County | 171,380 | 63,423 | 47,656 | 14,701 | 733 | 333 | 32,880 | 29,216 | 1,327 |
| Johnson County | 42,514 | 16,010 | 13,301 | 1,451 | 522 | 736 | 10,146 | 5,289 | 575 |
| Knox County | 4,482 | 2,254 | 1,502 | 331 | 175 | 246 | 988 | 807 | 459 |
| Laclede County | 27,158 | 11,564 | 8,518 | 2,883 | 114 | 49 | 5,041 | 5,996 | 527 |
| Lafayette County | 31,107 | 12,820 | 12,075 | 260 | 160 | 325 | 7,967 | 4,529 | 324 |
| Lawrence County | 30,236 | 12,788 | 7,959 | 4,653 | 137 | 39 | 7,214 | 5,399 | 175 |
| Lewis County | 10,233 | 4,244 | 3,179 | 642 | 184 | 239 | 2,330 | 1,567 | 347 |
| Lincoln County | 28,892 | 12,284 | 6,039 | 5,623 | 283 | 339 | 3,866 | 7,769 | 649 |
| Linn County | 13,885 | 6,566 | 6,251 | 133 | 91 | 91 | 4,642 | 1,538 | 386 |
| Livingston County | 14,592 | 6,294 | 5,884 | 107 | 192 | 111 | 4,184 | 1,931 | 179 |
| McDonald County | 16,938 | 7,327 | 3,133 | 3,579 | 177 | 438 | 2,112 | 5,014 | 201 |
| Macon County | 15,345 | 6,955 | 6,452 | 67 | 275 | 161 | 3,990 | 2,238 | 727 |
| Madison County | 11,127 | 5,282 | 2,601 | 2,351 | 146 | 184 | 1,979 | 3,175 | 128 |
| Maries County | 7,976 | 3,715 | 890 | 2,624 | 113 | 88 | 789 | 2,371 | 555 |
| Marion County | 27,682 | 12,026 | 10,726 | 797 | 151 | 352 | 9,387 | 2,312 | 327 |
| Mercer County | 3,723 | 2,225 | 1,531 | 183 | 310 | 201 | 897 | 961 | 367 |
| Miller County | 20,700 | 9,766 | 3,814 | 5,582 | 242 | 128 | 3,319 | 5,773 | 674 |
| Mississippi County | 14,442 | 5,757 | 4,164 | 1,459 | 127 | 7 | 4,047 | 1,672 | 38 |
| Moniteau County | 12,298 | 5,043 | 3,275 | 1,623 | 124 | 21 | 2,650 | 2,035 | 358 |
| Monroe County | 9,104 | 4,114 | 2,911 | 689 | 191 | 323 | 1,922 | 1,745 | 447 |
| Montgomery County | 11,355 | 5,241 | 2,755 | 1,862 | 287 | 337 | 2,606 | 2,312 | 323 |
| Morgan County | 15,574 | 12,642 | 3,502 | 8,617 | 332 | 191 | 1,875 | 10,213 | 554 |
| New Madrid County | 20,928 | 8,557 | 6,556 | 1,706 | 283 | 12 | 5,953 | 2,520 | 84 |
| Newton County | 44,445 | 18,384 | 8,956 | 8,856 | 419 | 153 | 6,766 | 11,280 | 338 |
| Nodaway County | 21,709 | 8,349 | 6,672 | 1,107 | 493 | 77 | 5,399 | 2,751 | 199 |
| Oregon County | 9,470 | 4,484 | 1,799 | 2,521 | 62 | 102 | 1,286 | 2,867 | 331 |
| Osage County | 12,018 | 5,414 | 2,464 | 2,592 | 150 | 208 | 1,158 | 3,236 | 1,020 |
| Ozark County | 8,598 | 4,451 | 722 | 3,453 | 173 | 103 | 418 | 3,558 | 475 |
| Pemiscot County | 21,921 | 8,806 | 8,577 | 181 | 33 | 15 | 6,000 | 2,710 | 96 |
| Perry County | 16,648 | 6,867 | 4,332 | 1,959 | 153 | 423 | 2,959 | 2,774 | 1,134 |
| Pettis County | 35,437 | 15,443 | 11,632 | 3,615 | 124 | 72 | 11,046 | 4,092 | 305 |
| Phelps County | 35,248 | 14,715 | 8,491 | 5,961 | 197 | 66 | 7,924 | 6,392 | 399 |
| Pike County | 15,969 | 7,128 | 5,078 | 1,324 | 287 | 439 | 3,849 | 2,732 | 547 |
| Platte County | 57,867 | 24,362 | 23,566 | 358 | 197 | 241 | 18,524 | 5,672 | 166 |
| Polk County | 21,826 | 8,979 | 3,933 | 4,887 | 127 | 32 | 3,655 | 5,099 | 225 |
| Pulaski County | 41,307 | 13,838 | 10,565 | 3,149 | 100 | 24 | 7,885 | 5,451 | 502 |
| Putnam County | 5,079 | 2,590 | 1,915 | 230 | 269 | 176 | 1,130 | 1,035 | 425 |
| Ralls County | 8,476 | 3,766 | 2,371 | 808 | 227 | 360 | 1,393 | 2,109 | 264 |
| Randolph County | 24,370 | 10,131 | 9,616 | 175 | 153 | 187 | 7,266 | 2,494 | 371 |
| Ray County | 21,971 | 8,611 | 7,584 | 424 | 448 | 155 | 4,516 | 3,899 | 196 |
| Reynolds County | 6,661 | 3,537 | 848 | 2,280 | 115 | 294 | 599 | 2,589 | 349 |
| Ripley County | 12,303 | 5,597 | 2,780 | 2,514 | 111 | 192 | 1,276 | 3,928 | 393 |
| St Charles County | 212,907 | 79,113 | 70,610 | 7,469 | 620 | 414 | 67,211 | 11,648 | 254 |
| St Clair County | 8,457 | 4,645 | 1,717 | 2,584 | 143 | 201 | 1,529 | 2,623 | 493 |
| Ste Genevieve County | 16,037 | 6,766 | 4,067 | 2,206 | 255 | 238 | 2,430 | 3,882 | 454 |
| St Francois County | 48,904 | 20,321 | 13,562 | 6,324 | 280 | 155 | 12,607 | 7,184 | 530 |
| St Louis County | 993,529 | 401,839 | 398,289 | 2,956 | 296 | 298 | 389,572 | 11,777 | 490 |
| Saline County | 23,523 | 10,033 | 8,691 | 975 | 221 | 146 | 7,350 | 2,162 | 521 |
| Schuyler County | 4,236 | 1,986 | 1,276 | 129 | 367 | 214 | 850 | 737 | 399 |
| Scotland County | 4,822 | 2,302 | 1,714 | 51 | 331 | 206 | 1,055 | 726 | 521 |
| Scott County | 39,376 | 15,881 | 12,410 | 3,032 | 402 | 37 | 11,354 | 4,345 | 182 |
| Shannon County | 7,613 | 3,312 | 1,220 | 1,590 | 122 | 380 | 979 | 1,969 | 364 |
| Shelby County | 6,942 | 3,227 | 2,800 | 302 | 72 | 103 | 1,866 | 1,126 | 285 |
| Stoddard County | 28,895 | 12,288 | 8,794 | 3,076 | 345 | 73 | 6,771 | 5,199 | 318 |
| Stone County | 19,078 | 11,294 | 4,665 | 6,283 | 195 | 151 | 1,510 | 9,357 | 427 |
| Sullivan County | 6,326 | 3,093 | 2,683 | 131 | 165 | 114 | 1,354 | 1,085 | 654 |
| Taney County | 25,561 | 13,273 | 8,305 | 4,854 | 64 | 50 | 3,856 | 8,982 | 435 |
| Texas County | 21,476 | 9,525 | 4,804 | 4,261 | 193 | 267 | 2,632 | 6,156 | 737 |
| Vernon County | 19,041 | 8,181 | 7,001 | 619 | 332 | 229 | 4,114 | 3,914 | 153 |
| Warren County | 19,534 | 8,841 | 4,500 | 3,669 | 199 | 473 | 3,359 | 5,152 | 330 |
| Washington County | 20,380 | 8,075 | 1,798 | 5,836 | 196 | 245 | 1,378 | 6,166 | 531 |
| Wayne County | 11,543 | 6,406 | 2,578 | 3,097 | 557 | 174 | 1,687 | 4,345 | 374 |
| Webster County | 23,753 | 9,067 | 3,715 | 5,082 | 187 | 83 | 3,432 | 5,211 | 424 |
| Worth County | 2,440 | 1,269 | 909 | 207 | 127 | 26 | 495 | 633 | 141 |
| Wright County | 16,758 | 7,214 | 3,302 | 3,775 | 80 | 57 | 3,051 | 3,838 | 325 |
| St Louis city | 396,685 | 194,919 | 194,848 | 32 | 0 | 39 | 194,110 | 383 | 426 |