Winneshiek 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
Decorah17,5787,5780%1,0467.2City
Calmar21,0851,132-1.09%9661.1City
Ossian3776803-0.89%7271.1City
Spillville4367385-1.34%8360.4City
Fort Atkinson5298310-1%9370.3City
Ridgeway6261276-1.51%3460.8City
Castalia7137144-1.44%2370.6City

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 Winneshiek County, Iowa?

Decorah is the largest city in Winneshiek County.

What is the smallest city in Winneshiek County, Iowa?

Castalia is the smallest city in Winneshiek County.

How many cities are in Winneshiek County?

There are 7 cities in Winneshiek County, Iowa.

Frequently Asked Questions