Cities in Washington County, Missouri by Population (2024)

There are 24 cities in Washington County, Missouri.

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.)

CSV JSON
City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Sullivan1Missouri6,7996,918-0.44%8308.20
De Soto2Missouri6,5096,4450.25%1,4854.38
Bonne Terre3Missouri6,4086,864-1.75%1,5754.07
Desloge4Missouri4,8834,8260.29%1,6732.92
Hillsboro5Missouri3,5053,4910.09%9123.84
Potosi6Missouri2,5392,543-0.04%1,0912.33
Terre Lac7Missouri2,5042,3821.25%3586.99
Bourbon8Missouri1,5171,564-0.78%1,1351.34
Steelville9Missouri1,4351,467-0.55%5932.42
Bismarck10Missouri1,2401,2400%1,2451
Leadwood11Missouri1,1641,175-0.26%1,0061.16
Summer Set12Missouri1,1481,030-0.86%1,2590.91
Lake Timberline13Missouri7305486.73%3072.38
Olympian Village14Missouri713719-0.28%1,3690.52
Iron Mountain Lake15Missouri6476420.15%3301.96
Oak Grove Village16Missouri397409-0.75%6460.61
Stanton17Missouri3832499.74%1173.27
Irondale18Missouri3683670%6900.53
Briarwood Estates19Missouri3032554.12%4460.68
West Sullivan20Missouri278284-0.71%7640.36
Mineral Point21Missouri2292250.44%9540.24
Caledonia22Missouri1331320%8110.16
Miramiguoa Park23Missouri1231220%3190.39
St. Cloud24Missouri4042-2.44%321.24

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 Washington County, Missouri?

Sullivan is the largest city in Washington County.

What is the smallest city in Washington County, Missouri?

St. Cloud is the smallest city in Washington County.

How many cities are in Washington County?

There are 24 cities in Washington County, Missouri.

Frequently Asked Questions