Allen County, Ohio Cities (2025)

21 cities

City
Rank
2025 Pop.
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Lima134,30435,529-0.71%2,51914 City
American214,34414,509-0.09%59724 Township
Fort Shawnee37,9745,8357.15%83810 CDP
Delphos47,0287,110-0.23%2,1163 City
Lafayette56,2336,0730.65%27223 Township
Richland65,7795,882-0.19%13942 Township
Lafayette74,3754,2770.69%17725 Township
Bluffton83,8633,962-0.52%1,0454 Village
Auglaize92,8272,7590.43%7936 Township
Spencerville102,1382,202-0.6%2,2161 Village
Elida111,8831,925-0.42%1,6161 Village
Cridersville121,7111,798-0.98%1,4261 Village
Sugar Creek131,1891,222-0.34%4924 Township
Westminster147705657.09%4232 CDP
Cairo15495512-0.6%1,7870 Village
McGuffey16453465-0.44%1,2180 Village
Harrod17423427-0.24%1,8080 Village
Lafayette18393400-0.25%1,6870 Village
Beaverdam19309321-0.64%4901 Village
Gomer202401677.14%1052 CDP
Lafayette21116188-4.92%1111 CDP

Allen County Cities Summary

Largest City

Lima is the largest city in Allen County, with a population of 34,304.

Smallest City

Lafayette is the smallest city in Allen County, with a population of 116.

10 Largest Cities

There are 21 cities in Allen County, Ohio.

Location of Allen County