Cass County, Iowa 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
Atlantic16,7776,791-0.06%8188.3City
Griswold2990993-0.1%1,6260.6City
Anita39659640%5441.8City
Lewis43633590.28%7190.5City
Massena5354356-0.28%5170.7City
Cumberland62502480%4030.6City
Marne71111090%1980.6City
Wiota891910%3040.3City

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 Cass County, Iowa?

Atlantic is the largest city in Cass County.

What is the smallest city in Cass County, Iowa?

Wiota is the smallest city in Cass County.

How many cities are in Cass County?

There are 8 cities in Cass County, Iowa.

Frequently Asked Questions