Cities in Allen County, Ohio by Population (2024)

There are 28 cities in Allen County, Ohio.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Lima1Ohio34,54935,529-0.7%2,53713.62
Wapakoneta2Ohio9,7309,954-0.57%1,4836.56
Delphos3Ohio7,0447,110-0.24%2,1203.32
Fort Shawnee4Ohio6,5535,8351.34%6899.51
Ada5Ohio5,2915,334-0.21%2,4792.13
Bluffton6Ohio3,8833,962-0.51%1,0513.69
Spencerville7Ohio2,1512,202-0.6%2,2290.96
Columbus Grove8Ohio2,1242,150-0.33%1,7301.23
Elida9Ohio1,8911,925-0.47%1,6231.17
Cridersville10Ohio1,7281,798-1.03%1,4401.20
Kalida11Ohio1,4491,452-0.07%8621.68
Pandora12Ohio1,1851,197-0.25%1,1121.07
Ottoville13Ohio9709680%1,0240.95
Alger14Ohio818840-0.73%2,7640.30
Waynesfield15Ohio731755-0.81%1,0990.67
Westminster16Ohio6675654.06%3661.82
Middle Point17Ohio565569-0.18%1,0390.54
Fort Jennings18Ohio5265220.19%9340.56
Cairo19Ohio498512-0.8%1,7980.28
McGuffey20Ohio455465-0.66%1,2230.37
New Hampshire21Ohio445556-0.45%7300.61
Harrod22Ohio424427-0.24%1,8120.23
Lafayette23Ohio394400-0.51%1,6910.23
Beaverdam24Ohio311321-0.95%4940.63
St. Johns25Ohio247178-7.14%6430.38
Buckland26Ohio226238-1.31%7530.30
Gomer27Ohio2171676.37%952.29
Vaughnsville28Ohio75271-35.9%4390.17
showing: 28 rows

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Allen County, Ohio?

Lima is the largest city in Allen County.

What is the smallest city in Allen County, Ohio?

Vaughnsville is the smallest city in Allen County.

How many cities are in Allen County?

There are 28 cities in Allen County, Ohio.

Frequently Asked Questions