Allen County, county in Ohio, United States. As of 2020 county had an estimated population of 101,980 inhabitants. The county was created 191 years ago in 1831. Its county seat is "Lima".
There are 1 city/town in Allen County, OH. The largest city of Allen County is Cairo with a population of 520.
Cairo, town in Ohio, United States
Cities, Towns, Neighborhoods & Other Populated Places in Allen County.
| City Name | Title | County | Population |
|---|---|---|---|
| Cairo | Town in Ohio, United States | Allen | 520 |
