Alphabetical list of Indiana counties
The land-area figures are rounded to the nearest square mile. Water area is shown separately so large lakes or coastal waters do not obscure the comparison.
| Name | FIPS code | Land area | Water area |
|---|---|---|---|
| Adams County | 18001 | 339 sq mi | 1 sq mi |
| Allen County | 18003 | 657 sq mi | 3 sq mi |
| Bartholomew County | 18005 | 407 sq mi | 3 sq mi |
| Benton County | 18007 | 406 sq mi | 0 sq mi |
| Blackford County | 18009 | 165 sq mi | 1 sq mi |
| Boone County | 18011 | 423 sq mi | 0 sq mi |
| Brown County | 18013 | 312 sq mi | 5 sq mi |
| Carroll County | 18015 | 372 sq mi | 3 sq mi |
| Cass County | 18017 | 412 sq mi | 3 sq mi |
| Clark County | 18019 | 372 sq mi | 4 sq mi |
| Clay County | 18021 | 358 sq mi | 3 sq mi |
| Clinton County | 18023 | 405 sq mi | 0 sq mi |
| Crawford County | 18025 | 306 sq mi | 3 sq mi |
| Daviess County | 18027 | 430 sq mi | 7 sq mi |
| Dearborn County | 18029 | 305 sq mi | 2 sq mi |
| Decatur County | 18031 | 373 sq mi | 1 sq mi |
| DeKalb County | 18033 | 363 sq mi | 1 sq mi |
| Delaware County | 18035 | 392 sq mi | 4 sq mi |
| Dubois County | 18037 | 427 sq mi | 8 sq mi |
| Elkhart County | 18039 | 463 sq mi | 5 sq mi |
| Fayette County | 18041 | 215 sq mi | 0 sq mi |
| Floyd County | 18043 | 148 sq mi | 1 sq mi |
| Fountain County | 18045 | 396 sq mi | 2 sq mi |
| Franklin County | 18047 | 384 sq mi | 7 sq mi |
| Fulton County | 18049 | 368 sq mi | 3 sq mi |
| Gibson County | 18051 | 487 sq mi | 12 sq mi |
| Grant County | 18053 | 414 sq mi | 1 sq mi |
| Greene County | 18055 | 542 sq mi | 3 sq mi |
| Hamilton County | 18057 | 394 sq mi | 8 sq mi |
| Hancock County | 18059 | 306 sq mi | 1 sq mi |
| Harrison County | 18061 | 484 sq mi | 2 sq mi |
| Hendricks County | 18063 | 407 sq mi | 2 sq mi |
| Henry County | 18065 | 392 sq mi | 3 sq mi |
| Howard County | 18067 | 293 sq mi | 1 sq mi |
| Huntington County | 18069 | 383 sq mi | 5 sq mi |
| Jackson County | 18071 | 510 sq mi | 4 sq mi |
| Jasper County | 18073 | 560 sq mi | 2 sq mi |
| Jay County | 18075 | 384 sq mi | 0 sq mi |
| Jefferson County | 18077 | 361 sq mi | 2 sq mi |
| Jennings County | 18079 | 377 sq mi | 2 sq mi |
| Johnson County | 18081 | 320 sq mi | 1 sq mi |
| Knox County | 18083 | 516 sq mi | 8 sq mi |
| Kosciusko County | 18085 | 531 sq mi | 23 sq mi |
| LaGrange County | 18087 | 380 sq mi | 7 sq mi |
| Lake County | 18089 | 499 sq mi | 128 sq mi |
| LaPorte County | 18091 | 598 sq mi | 15 sq mi |
| Lawrence County | 18093 | 449 sq mi | 3 sq mi |
| Madison County | 18095 | 452 sq mi | 1 sq mi |
| Marion County | 18097 | 396 sq mi | 7 sq mi |
| Marshall County | 18099 | 444 sq mi | 6 sq mi |
| Martin County | 18101 | 336 sq mi | 5 sq mi |
| Miami County | 18103 | 374 sq mi | 4 sq mi |
| Monroe County | 18105 | 395 sq mi | 17 sq mi |
| Montgomery County | 18107 | 505 sq mi | 1 sq mi |
| Morgan County | 18109 | 404 sq mi | 6 sq mi |
| Newton County | 18111 | 402 sq mi | 2 sq mi |
| Noble County | 18113 | 411 sq mi | 7 sq mi |
| Ohio County | 18115 | 86 sq mi | 1 sq mi |
| Orange County | 18117 | 398 sq mi | 10 sq mi |
| Owen County | 18119 | 385 sq mi | 3 sq mi |
| Parke County | 18121 | 445 sq mi | 5 sq mi |
| Perry County | 18123 | 382 sq mi | 5 sq mi |
| Pike County | 18125 | 334 sq mi | 7 sq mi |
| Porter County | 18127 | 418 sq mi | 104 sq mi |
| Posey County | 18129 | 409 sq mi | 10 sq mi |
| Pulaski County | 18131 | 434 sq mi | 1 sq mi |
| Putnam County | 18133 | 481 sq mi | 2 sq mi |
| Randolph County | 18135 | 452 sq mi | 1 sq mi |
| Ripley County | 18137 | 446 sq mi | 2 sq mi |
| Rush County | 18139 | 408 sq mi | 0 sq mi |
| Scott County | 18143 | 190 sq mi | 2 sq mi |
| Shelby County | 18145 | 411 sq mi | 2 sq mi |
| Spencer County | 18147 | 397 sq mi | 5 sq mi |
| St. Joseph County | 18141 | 458 sq mi | 4 sq mi |
| Starke County | 18149 | 309 sq mi | 3 sq mi |
| Steuben County | 18151 | 309 sq mi | 14 sq mi |
| Sullivan County | 18153 | 447 sq mi | 7 sq mi |
| Switzerland County | 18155 | 221 sq mi | 3 sq mi |
| Tippecanoe County | 18157 | 499 sq mi | 4 sq mi |
| Tipton County | 18159 | 261 sq mi | 0 sq mi |
| Union County | 18161 | 161 sq mi | 4 sq mi |
| Vanderburgh County | 18163 | 233 sq mi | 3 sq mi |
| Vermillion County | 18165 | 257 sq mi | 3 sq mi |
| Vigo County | 18167 | 404 sq mi | 7 sq mi |
| Wabash County | 18169 | 413 sq mi | 8 sq mi |
| Warren County | 18171 | 365 sq mi | 2 sq mi |
| Warrick County | 18173 | 385 sq mi | 6 sq mi |
| Washington County | 18175 | 514 sq mi | 3 sq mi |
| Wayne County | 18177 | 402 sq mi | 3 sq mi |
| Wells County | 18179 | 368 sq mi | 2 sq mi |
| White County | 18181 | 505 sq mi | 4 sq mi |
| Whitley County | 18183 | 336 sq mi | 2 sq mi |
Largest Indiana counties by land area
These are the five largest mapped units in Indiana by Census-reported land area:
- Allen County — 657 square miles
- LaPorte County — 598 square miles
- Jasper County — 560 square miles
- Greene County — 542 square miles
- Kosciusko County — 531 square miles
How to read and use this map
County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.
For classroom or planning use, print directly from this page. If labels become crowded, choose landscape orientation and reduce page margins. The underlying vector lines remain crisp at different sizes.
Frequently asked questions
How many counties are in Indiana?
Indiana has 92 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.
Can I print this Indiana county map?
Yes. Choose Print map and use landscape orientation for the widest map. Because the map is SVG, its boundary lines stay sharp when scaled.
Are these legal survey boundaries?
No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.
Map source
U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:20,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 15, 2026.