Seneca County, Ohio Cities (2024)

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.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Tiffin117,48117,967-0.69%2,4177.2City
Fostoria213,03713,043-0.01%1,7217.6City
Green Springs31,2201,228-0.16%1,0521.2Village
Attica4867870-0.11%1,3000.7Village
Bloomville5848868-0.59%1,4060.6Village
Bettsville6592596-0.17%1,1360.5Village
Republic7538553-0.74%6240.9Village
McCutchenville8351211-0.85%1262.8CDP
Flat Rock93032611.68%1,4290.2CDP
New Riegel10278286-0.71%1,3900.2Village
Bascom11270189-2.88%1781.5CDP
Kansas12185520.54%4210.4CDP
Old Fort13130218-2.99%2250.6CDP
Fort Seneca1495102-11.21%1520.6CDP
Melmore157162-7.79%1190.6CDP

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 Seneca County, Ohio?

Tiffin is the largest city in Seneca County.

What is the smallest city in Seneca County, Ohio?

Melmore is the smallest city in Seneca County.

How many cities are in Seneca County?

There are 15 cities in Seneca County, Ohio.

Frequently Asked Questions