Mason County, Illinois 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
Havana12,7842,956-1.52%1,0032.8City
Mason City21,9512,069-1.51%1,9261.0City
Manito31,4571,551-1.62%9631.5Village
San Jose4455478-1.3%1,0990.4Village
Easton5297316-1.66%1,2380.2Village
Bath6260275-1.52%7120.4Village
Kilbourne7253267-1.56%2850.9Village
Forest City8206217-1.44%3940.5Village
Goofy Ridge9184238-6.12%1361.3CDP
Topeka105458-1.82%3940.1Village

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 Mason County, Illinois?

Havana is the largest city in Mason County.

What is the smallest city in Mason County, Illinois?

Topeka is the smallest city in Mason County.

How many cities are in Mason County?

There are 10 cities in Mason County, Illinois.

Frequently Asked Questions