| County Population Centroids for Indiana |
| ST | COU | COUNTY NAME | POPULATION | LATITUDE | LONGITUDE |
| 18 | 001 | Adams | 33,625 | 40.757482 | -84.935746 |
| 18 | 003 | Allen | 331,849 | 41.093379 | -85.119481 |
| 18 | 005 | Bartholomew | 71,435 | 39.217170 | -85.900283 |
| 18 | 007 | Benton | 9,421 | 40.577187 | -87.295480 |
| 18 | 009 | Blackford | 14,048 | 40.470069 | -85.344268 |
| 18 | 011 | Boone | 46,107 | 40.022279 | -86.414455 |
| 18 | 013 | Brown | 14,957 | 39.241696 | -86.212338 |
| 18 | 015 | Carroll | 20,165 | 40.580985 | -86.600715 |
| 18 | 017 | Cass | 40,930 | 40.747782 | -86.338885 |
| 18 | 019 | Clark | 96,472 | 38.367247 | -85.731805 |
| 18 | 021 | Clay | 26,556 | 39.465123 | -87.123743 |
| 18 | 023 | Clinton | 33,866 | 40.297791 | -86.511524 |
| 18 | 025 | Crawford | 10,743 | 38.311991 | -86.421077 |
| 18 | 027 | Daviess | 29,820 | 38.696308 | -87.101771 |
| 18 | 029 | Dearborn | 46,109 | 39.138619 | -84.922539 |
| 18 | 031 | Decatur | 24,555 | 39.318284 | -85.493529 |
| 18 | 033 | DeKalb | 40,285 | 41.379751 | -85.034235 |
| 18 | 035 | Delaware | 118,769 | 40.204795 | -85.400075 |
| 18 | 037 | Dubois | 39,674 | 38.354255 | -86.912725 |
| 18 | 039 | Elkhart | 182,791 | 41.638829 | -85.909522 |
| 18 | 041 | Fayette | 25,588 | 39.640899 | -85.147385 |
| 18 | 043 | Floyd | 70,823 | 38.320044 | -85.853718 |
| 18 | 045 | Fountain | 17,954 | 40.150088 | -87.272415 |
| 18 | 047 | Franklin | 22,151 | 39.404093 | -85.070631 |
| 18 | 049 | Fulton | 20,511 | 41.058396 | -86.223483 |
| 18 | 051 | Gibson | 32,500 | 38.311547 | -87.541429 |
| 18 | 053 | Grant | 73,403 | 40.525846 | -85.645528 |
| 18 | 055 | Greene | 33,157 | 39.051927 | -86.999651 |
| 18 | 057 | Hamilton | 182,740 | 40.006408 | -86.071407 |
| 18 | 059 | Hancock | 55,391 | 39.807885 | -85.816753 |
| 18 | 061 | Harrison | 34,325 | 38.235442 | -86.095839 |
| 18 | 063 | Hendricks | 104,093 | 39.769443 | -86.426459 |
| 18 | 065 | Henry | 48,508 | 39.927902 | -85.404664 |
| 18 | 067 | Howard | 84,964 | 40.472140 | -86.130743 |
| 18 | 069 | Huntington | 38,075 | 40.866143 | -85.486954 |
| 18 | 071 | Jackson | 41,335 | 38.926024 | -85.943430 |
| 18 | 073 | Jasper | 30,043 | 41.066208 | -87.149012 |
| 18 | 075 | Jay | 21,806 | 40.426062 | -85.036465 |
| 18 | 077 | Jefferson | 31,705 | 38.758774 | -85.434253 |
| 18 | 079 | Jennings | 27,554 | 39.006166 | -85.647610 |
| 18 | 081 | Johnson | 115,209 | 39.549774 | -86.113656 |
| 18 | 083 | Knox | 39,256 | 38.699612 | -87.454133 |
| 18 | 085 | Kosciusko | 74,057 | 41.267811 | -85.829098 |
| 18 | 087 | LaGrange | 34,909 | 41.632982 | -85.454953 |
| 18 | 089 | Lake | 484,564 | 41.536831 | -87.406076 |
| 18 | 091 | LaPorte | 110,106 | 41.634978 | -86.792921 |
| 18 | 093 | Lawrence | 45,922 | 38.845154 | -86.494095 |
| 18 | 095 | Madison | 133,358 | 40.123519 | -85.703984 |
| 18 | 097 | Marion | 860,454 | 39.796755 | -86.137214 |
| 18 | 099 | Marshall | 45,128 | 41.347031 | -86.274320 |
| 18 | 101 | Martin | 10,369 | 38.679291 | -86.846382 |
| 18 | 103 | Miami | 36,082 | 40.740408 | -86.068803 |
| 18 | 105 | Monroe | 120,563 | 39.164453 | -86.537783 |
| 18 | 107 | Montgomery | 37,629 | 40.034391 | -86.900548 |
| 18 | 109 | Morgan | 66,689 | 39.508572 | -86.402148 |
| 18 | 111 | Newton | 14,566 | 40.988371 | -87.382082 |
| 18 | 113 | Noble | 46,275 | 41.415597 | -85.391314 |
| 18 | 115 | Ohio | 5,623 | 38.952677 | -84.906727 |
| 18 | 117 | Orange | 19,306 | 38.563941 | -86.496044 |
| 18 | 119 | Owen | 21,786 | 39.317788 | -86.800675 |
| 18 | 121 | Parke | 17,241 | 39.756742 | -87.229039 |
| 18 | 123 | Perry | 18,899 | 38.006221 | -86.709665 |
| 18 | 125 | Pike | 12,837 | 38.427676 | -87.235245 |
| 18 | 127 | Porter | 146,798 | 41.515721 | -87.106706 |
| 18 | 129 | Posey | 27,061 | 38.013013 | -87.826829 |
| 18 | 131 | Pulaski | 13,755 | 41.049179 | -86.686791 |
| 18 | 133 | Putnam | 36,019 | 39.646268 | -86.838396 |
| 18 | 135 | Randolph | 27,401 | 40.168907 | -84.998723 |
| 18 | 137 | Ripley | 26,523 | 39.159980 | -85.220396 |
| 18 | 139 | Rush | 18,261 | 39.621116 | -85.473772 |
| 18 | 141 | St. Joseph | 265,559 | 41.675117 | -86.228725 |
| 18 | 143 | Scott | 22,960 | 38.700099 | -85.763803 |
| 18 | 145 | Shelby | 43,445 | 39.538301 | -85.790697 |
| 18 | 147 | Spencer | 20,391 | 38.014581 | -87.014481 |
| 18 | 149 | Starke | 23,556 | 41.280506 | -86.639079 |
| 18 | 151 | Steuben | 33,214 | 41.648179 | -85.013780 |
| 18 | 153 | Sullivan | 21,751 | 39.101638 | -87.393493 |
| 18 | 155 | Switzerland | 9,065 | 38.813616 | -85.025812 |
| 18 | 157 | Tippecanoe | 148,955 | 40.418483 | -86.886162 |
| 18 | 159 | Tipton | 16,577 | 40.309473 | -86.050990 |
| 18 | 161 | Union | 7,349 | 39.619485 | -84.921422 |
| 18 | 163 | Vanderburgh | 171,922 | 37.991352 | -87.553969 |
| 18 | 165 | Vermillion | 16,788 | 39.762871 | -87.439345 |
| 18 | 167 | Vigo | 105,848 | 39.463002 | -87.388201 |
| 18 | 169 | Wabash | 34,960 | 40.854882 | -85.802391 |
| 18 | 171 | Warren | 8,419 | 40.312479 | -87.326572 |
| 18 | 173 | Warrick | 52,383 | 38.015806 | -87.345854 |
| 18 | 175 | Washington | 27,223 | 38.573557 | -86.088921 |
| 18 | 177 | Wayne | 71,097 | 39.841829 | -84.947810 |
| 18 | 179 | Wells | 27,600 | 40.769242 | -85.195113 |
| 18 | 181 | White | 25,267 | 40.756380 | -86.809786 |
| 18 | 183 | Whitley | 30,707 | 41.163467 | -85.479656 |