Allen County
Also known as Allen County, Ohio, Allen County, OH
county in Ohio, United States
Key facts
- Country
- United States
- State
- Ohio
- Founded
- March 1, 1831
- Named after
- John Allen
- Seat
- Lima
- Largest city
- Lima
- Total
- 407 sq mi (1,050 km )
- Land
- 402 sq mi (1,040 km )
- Water
- 4.4 sq mi (11 km ) 1.1%
- Estimate 2025
- 100,881
- Density
- 250/sq mi (97/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
~11 min read
Article
Allen County is a county located in the northwestern part of the U.S. state of Ohio. Its county seat and largest city is Lima. The county was created in 1820 and organized in 1831. The county is named in honor of Colonel John Allen, who was killed leading his men at the Battle of Frenchtown during the War of 1812.
Allen County comprises the Lima metropolitan statistical area, and as of the 2020 census, the population was 102,206. Allen County also comprises the entirety of the Lima, OH media market.
Gallery (7)
On the map
2 mapped locations