Sumner County | |
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![]() Old Oxford Mill in Oxford (2012) | |
![]() Location within the U.S. state of Kansas | |
![]() Kansas's location within the U.S. | |
Coordinates: 37°14′N 97°29′W / 37.233°N 97.483°W | |
Country | ![]() |
State | ![]() |
Founded | December 20, 1870 |
Named for | Charles Sumner |
Seat | Wellington |
Largest city | Wellington |
Area | |
• Total | 1,185 sq mi (3,070 km2) |
• Land | 1,182 sq mi (3,060 km2) |
• Water | 3.0 sq mi (8 km2) 0.3% |
Population | |
• Total | 22,382 |
• Estimate (2023)[2] | 22,334 ![]() |
• Density | 18.9/sq mi (7.3/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Area code | 620 |
Congressional district | 4th |
Website | County website |
Sumner County is a county located in the U.S. state of Kansas. Its county seat is Wellington.[3] As of the 2020 census, the population was 22,382.[1] The county is named after Charles Sumner, a U.S. Senator from Massachusetts who was a leader of Reconstruction politics.