Allen County KS United States
| County FIPS | 20001 |
| Largest City | Iola |
| State | Kansas |
| Latitude | 37.8857 |
| Longitude | -95.3014 |
| Population | 12,483 |
| Density | 24.95 people per square mile |
| Time Zone | America/Chicago |
Median household: $60,689
Median individual: $33,734
Mode: 90.3% White
Median house value: $105,592.0
Median: 41.2 years old
With at least college degree: 22.4%
With STEM degree: 41.8%
Never married: 24.3%
Unemployed: 7.9%
All data comes from the SimpleMaps US Counties Database, 2026.
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