The graph below ranks each Montana County by Average income according to the 2012 census estimates.
Montana Average Income by county
| County | Average Income |
| Madison |  $32,711 |
| Richland | $30,411 |
| Jefferson | $29,875 |
| Sheridan | $29,569 |
| Gallatin | $28,642 |
| Daniels | $28,440 |
| Fallon | $28,047 |
| Lewis and Clark | $27,861 |
| Stillwater | $27,824 |
| Yellowstone | $27,607 |
| Wibaux | $26,485 |
| Carbon | $26,421 |
| Powder River | $26,187 |
| Granite | $26,018 |
| McCone | $25,683 |
| Flathead | $25,616 |
| Missoula | $25,548 |
| Dawson | $25,441 |
| Treasure | $24,537 |
| Judith Basin | $24,492 |
| Valley | $24,462 |
| Garfield | $24,223 |
| Fergus | $24,212 |
| Broadwater | $24,146 |
| Park | $24,126 |
| Cascade | $23,976 |
| Custer | $23,712 |
| Ravalli | $23,636 |
| Toole | $23,078 |
| Phillips | $22,960 |
| Musselshell | $22,896 |
| Silver Bow | $22,770 |
| Beaverhead | $22,635 |
| Pondera | $22,391 |
| Teton | $22,341 |
| Petroleum | $22,328 |
| Carter | $22,095 |
| Hill | $21,753 |
| Lincoln | $21,669 |
| Chouteau | $21,656 |
| Rosebud | $21,034 |
| Sweet Grass | $20,927 |
| Golden Valley | $20,696 |
| Lake | $20,604 |
| Deer Lodge | $20,462 |
| Liberty | $19,845 |
| Prairie | $19,677 |
| Powell | $19,330 |
| Meagher | $19,006 |
| Sanders | $18,199 |
| Roosevelt | $17,758 |
| Mineral | $17,683 |
| Blaine | $17,250 |
| Glacier | $17,247 |
| Wheatland | $17,243 |
| Big Horn | $15,239 |