Allen County, Kansas
Allen County, Kansas | |
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Old Allen County Jail in Iola (2008) | |
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Seal | |
Location within the U.S. state of Kansas | |
| Country | United States |
| State | Kansas |
| Founded | August 25, 1855 |
| Named after | William Allen |
| Seat | Iola |
| Largest city | Iola |
| Area | |
• Total | 505 sq mi (1,310 km2) |
| • Land | 500 sq mi (1,300 km2) |
| • Water | 5.0 sq mi (13 km2) 1.0% |
| Population (2020) | |
• Total | 12,526 |
| • Density | 25.1/sq mi (9.7/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Area code | 620 |
| Congressional district | 2nd |
| Website | AllenCounty.org |
Allen County is a county located in the southeast portion of the U.S. state of Kansas. Its county seat and most populous city is Iola. As of the 2020 census, the population was 12,526. The county was named for William Allen, a U.S. Senator from Ohio and prominent supporter of westward expansion.