Southwestern Indiana Counties Counties

| IN_No_ | County_Name | Establishment_Date_SW_Indiana_History_Statehood | County_Seat | Time_Zone | Population_2010_Rank | Area_sq_mi_km_2_Rank | Twps | ZIP_code_Prefixes | _of_Boundary_by_water |
|---|---|---|---|---|---|---|---|---|---|
| 62 | Perry | November 1, 1814 (4) (12) (T) | Tell City | Central | 19,338 (9) | sqmi (km2) (8) | 7 | 474/475 | 52% |
| 63 | Pike | December 21, 1816 (6) (16) (1) | Petersburg | Eastern | 12,845 (10) | sqmi (km2) (9) | 9 | 475/476 | 35% |
| 65 | Posey | November 11, 1814 (5) (13) (T) | Mt. Vernon | Central | 25,940 (7) | sqmi (km2) (5) | 10 | 476 | 63% |
| 74 | Spencer | January 10, 1818 (9) (24) (9) | Rockport | Central | 20,942 (8) | sqmi (km2) (7) | 9 | 475/476 | 73% |
| 82 | Vanderburgh | January 7, 1818 (8) (22) (7) | Evansville | Central | 179,703 (1) | sqmi (km2) (11) | 8 | 476/477 | 26% |