There are 4 cities in Washington County, Missouri.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Potosi1Missouri2,5272,542-0.16%1,0852.33
Irondale2Missouri367367 6890.53
Mineral Point3Missouri226226 9420.24
Caledonia4Missouri132132 8050.16
showing: 4 rows

Cities in Washington County, Missouri by Population (2024)

What is the largest city in Washington County, Missouri?

Potosi is the largest city in Washington County.

What is the smallest city in Washington County, Missouri?

Caledonia is the smallest city in Washington County.

How many cities are in Washington County?

There are 4 cities in Washington County, Missouri.

Frequently Asked Questions