| County | 1999 | Rank | 1989(adj) | Rank | Change | Rank in Change | % Change | Rank in % Change |
| Indiana | $50,261 | NA | $44,234 | NA | 6,027 | NA | 13.6 | NA |
| Adams County | $46,749 | 49 | $41,939 | 39 | 4,810 | 69 | 11.5 | 65 |
| Allen County | $52,708 | 14 | $49,145 | 8 | 3,563 | 86 | 7.2 | 90 |
| Bartholomew County | $52,097 | 17 | $46,976 | 13 | 5,121 | 66 | 10.9 | 69 |
| Benton County | $46,869 | 48 | $40,149 | 54 | 6,720 | 29 | 16.7 | 31 |
| Blackford County | $41,758 | 79 | $39,098 | 61 | 2,660 | 91 | 6.8 | 91 |
| Boone County | $58,879 | 6 | $52,544 | 5 | 6,335 | 38 | 12.1 | 60 |
| Brown County | $49,252 | 33 | $42,057 | 38 | 7,195 | 24 | 17.1 | 28 |
| Carroll County | $50,216 | 25 | $42,591 | 35 | 7,625 | 19 | 17.9 | 23 |
| Cass County | $46,506 | 52 | $40,297 | 52 | 6,209 | 41 | 15.4 | 39 |
| Clark County | $47,412 | 44 | $41,755 | 42 | 5,657 | 52 | 13.5 | 54 |
| Clay County | $41,863 | 75 | $37,284 | 73 | 4,579 | 71 | 12.3 | 58 |
| Clinton County | $48,864 | 37 | $40,325 | 50 | 8,539 | 10 | 21.2 | 10 |
| Crawford County | $37,869 | 92 | $30,249 | 92 | 7,620 | 20 | 25.2 | 3 |
| Daviess County | $41,818 | 77 | $35,138 | 87 | 6,680 | 30 | 19.0 | 19 |
| Dearborn County | $54,806 | 9 | $46,348 | 17 | 8,458 | 11 | 18.2 | 21 |
| Decatur County | $46,453 | 53 | $41,936 | 40 | 4,517 | 74 | 10.8 | 71 |
| DeKalb County | $51,676 | 19 | $45,234 | 23 | 6,442 | 37 | 14.2 | 49 |
| Delaware County | $45,394 | 60 | $41,173 | 47 | 4,221 | 77 | 10.3 | 78 |
| Dubois County | $52,342 | 16 | $47,103 | 12 | 5,239 | 60 | 11.1 | 67 |
| Elkhart County | $50,438 | 24 | $45,622 | 21 | 4,816 | 68 | 10.6 | 76 |
| Fayette County | $46,111 | 55 | $39,641 | 56 | 6,470 | 36 | 16.3 | 33 |
| Floyd County | $52,401 | 15 | $42,940 | 33 | 9,461 | 5 | 22.0 | 7 |
| Fountain County | $43,330 | 67 | $37,339 | 72 | 5,991 | 43 | 16.0 | 35 |
| Franklin County | $50,171 | 26 | $41,233 | 46 | 8,938 | 8 | 21.7 | 8 |
| Fulton County | $44,865 | 62 | $38,936 | 63 | 5,929 | 45 | 15.2 | 41 |
| Gibson County | $44,839 | 63 | $41,635 | 43 | 3,204 | 89 | 7.7 | 87 |
| Grant County | $44,304 | 64 | $40,299 | 51 | 4,005 | 81 | 9.9 | 82 |
| Greene County | $41,523 | 81 | $35,595 | 84 | 5,928 | 46 | 16.7 | 31 |
| Hamilton County | $80,239 | 1 | $66,408 | 1 | 13,831 | 1 | 20.8 | 12 |
| Hancock County | $63,083 | 2 | $54,364 | 4 | 8,719 | 9 | 16.0 | 35 |
| Harrison County | $48,542 | 41 | $40,441 | 49 | 8,101 | 16 | 20.0 | 13 |
| Hendricks County | $61,689 | 4 | $57,439 | 2 | 4,250 | 76 | 7.4 | 88 |
| Henry County | $45,470 | 59 | $39,687 | 55 | 5,783 | 49 | 14.6 | 47 |
| Howard County | $53,051 | 11 | $47,894 | 9 | 5,157 | 64 | 10.8 | 71 |
| Huntington County | $49,031 | 36 | $43,351 | 29 | 5,680 | 51 | 13.1 | 55 |
| Jackson County | $45,210 | 61 | $39,184 | 60 | 6,026 | 42 | 15.4 | 39 |
| Jasper County | $50,132 | 27 | $41,905 | 41 | 8,227 | 13 | 19.6 | 15 |
| Jay County | $41,850 | 76 | $35,977 | 80 | 5,873 | 47 | 16.3 | 33 |
| Jefferson County | $45,712 | 58 | $38,427 | 66 | 7,285 | 22 | 19.0 | 19 |
| Jennings County | $42,519 | 73 | $37,362 | 71 | 5,157 | 64 | 13.8 | 52 |
| Johnson County | $60,571 | 5 | $51,508 | 6 | 9,063 | 7 | 17.6 | 24 |
| Knox County | $41,273 | 85 | $35,992 | 79 | 5,281 | 58 | 14.7 | 46 |
| Kosciusko County | $49,532 | 31 | $46,136 | 19 | 3,396 | 88 | 7.4 | 88 |
| LaGrange County | $46,885 | 47 | $38,732 | 65 | 8,153 | 14 | 21.0 | 11 |
| Lake County | $50,131 | 28 | $46,209 | 18 | 3,922 | 82 | 8.5 | 84 |
| LaPorte County | $49,872 | 29 | $43,086 | 32 | 6,786 | 28 | 15.7 | 37 |
| Lawrence County | $43,109 | 68 | $39,072 | 62 | 4,037 | 80 | 10.3 | 78 |
| Madison County | $46,663 | 51 | $43,260 | 30 | 3,403 | 87 | 7.9 | 86 |
| Marion County | $49,387 | 32 | $45,495 | 22 | 3,892 | 84 | 8.6 | 83 |
| Marshall County | $48,527 | 42 | $41,262 | 45 | 7,265 | 23 | 17.6 | 24 |
| Martin County | $43,550 | 66 | $35,857 | 81 | 7,693 | 18 | 21.5 | 9 |
| Miami County | $45,816 | 57 | $35,607 | 83 | 10,209 | 3 | 28.7 | 1 |
| Monroe County | $51,058 | 22 | $42,646 | 34 | 8,412 | 12 | 19.7 | 14 |
| Montgomery County | $48,779 | 39 | $43,233 | 31 | 5,546 | 54 | 12.8 | 56 |
| Morgan County | $52,851 | 13 | $47,323 | 10 | 5,528 | 55 | 11.7 | 63 |
| Newton County | $46,741 | 50 | $42,197 | 37 | 4,544 | 72 | 10.8 | 71 |
| Noble County | $49,037 | 35 | $43,812 | 27 | 5,225 | 61 | 11.9 | 61 |
| Ohio County | $48,801 | 38 | $39,298 | 58 | 9,503 | 4 | 24.2 | 4 |
| Orange County | $38,505 | 91 | $32,204 | 91 | 6,301 | 40 | 19.6 | 15 |
| Owen County | $41,282 | 84 | $35,311 | 86 | 5,971 | 44 | 16.9 | 29 |
| Parke County | $40,656 | 88 | $37,535 | 70 | 3,121 | 90 | 8.3 | 85 |
| Perry County | $43,743 | 65 | $37,204 | 74 | 6,539 | 35 | 17.6 | 24 |
| Pike County | $41,420 | 82 | $36,245 | 77 | 5,175 | 62 | 14.3 | 48 |
| Porter County | $61,880 | 3 | $54,418 | 3 | 7,462 | 21 | 13.7 | 53 |
| Posey County | $53,737 | 10 | $47,155 | 11 | 6,582 | 34 | 14.0 | 51 |
| Pulaski County | $41,028 | 86 | $39,294 | 59 | 1,734 | 92 | 4.4 | 92 |
| Putnam County | $45,916 | 56 | $41,391 | 44 | 4,525 | 73 | 10.9 | 69 |
| Randolph County | $40,855 | 87 | $37,055 | 75 | 3,800 | 85 | 10.3 | 78 |
| Ripley County | $47,019 | 46 | $41,162 | 48 | 5,857 | 48 | 14.2 | 49 |
| Rush County | $42,633 | 71 | $38,151 | 67 | 4,482 | 75 | 11.7 | 63 |
| St. Joseph County | $49,653 | 30 | $44,395 | 25 | 5,258 | 59 | 11.8 | 62 |
| Scott County | $39,475 | 89 | $33,150 | 90 | 6,325 | 39 | 19.1 | 18 |
| Shelby County | $51,271 | 21 | $44,675 | 24 | 6,596 | 31 | 14.8 | 45 |
| Spencer County | $49,123 | 34 | $43,631 | 28 | 5,492 | 56 | 12.6 | 57 |
| Starke County | $42,355 | 74 | $34,426 | 89 | 7,929 | 17 | 23.0 | 6 |
| Steuben County | $50,567 | 23 | $43,974 | 26 | 6,593 | 33 | 15.0 | 42 |
| Sullivan County | $39,290 | 90 | $35,380 | 85 | 3,910 | 83 | 11.1 | 67 |
| Switzerland County | $41,395 | 83 | $35,831 | 82 | 5,564 | 53 | 15.5 | 38 |
| Tippecanoe County | $51,791 | 18 | $46,818 | 15 | 4,973 | 67 | 10.6 | 76 |
| Tipton County | $56,080 | 7 | $46,888 | 14 | 9,192 | 6 | 19.6 | 15 |
| Union County | $41,752 | 80 | $36,308 | 76 | 5,444 | 57 | 15.0 | 42 |
| Vanderburgh County | $47,416 | 43 | $42,256 | 36 | 5,160 | 63 | 12.2 | 59 |
| Vermillion County | $41,809 | 78 | $37,768 | 69 | 4,041 | 79 | 10.7 | 75 |
| Vigo County | $42,957 | 69 | $38,768 | 64 | 4,189 | 78 | 10.8 | 71 |
| Wabash County | $47,067 | 45 | $40,273 | 53 | 6,794 | 27 | 16.9 | 29 |
| Warren County | $48,647 | 40 | $37,990 | 68 | 10,657 | 2 | 28.1 | 2 |
| Warrick County | $55,497 | 8 | $49,805 | 7 | 5,692 | 50 | 11.4 | 66 |
| Washington County | $42,618 | 72 | $34,476 | 88 | 8,142 | 15 | 23.6 | 5 |
| Wayne County | $42,811 | 70 | $36,217 | 78 | 6,594 | 32 | 18.2 | 21 |
| Wells County | $51,517 | 20 | $46,724 | 16 | 4,793 | 70 | 10.3 | 78 |
| White County | $46,436 | 54 | $39,532 | 57 | 6,904 | 25 | 17.5 | 27 |
| Whitley County | $52,872 | 12 | $46,018 | 20 | 6,854 | 26 | 14.9 | 44 |