Franklin County, Missouri Cities (2026)

30 cities

City
Rank
2026 Pop. ↓
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Wildwood134,92835,390-0.22%52167 City
Washington215,93214,6991.31%1,60110 City
Union313,60012,3931.5%1,4969 City
Ellisville410,5469,9840.9%2,4164 City
Pacific58,0877,3511.54%1,1757 City
Sullivan66,9336,9080.06%8468 City
St. Clair74,7064,831-0.44%9795 City
Union83,2463,434-0.37%31103 Township
Clarkson Valley92,5312,608-0.51%9393 City
New Haven102,3882,421-0.21%7513 City
Washington112,3282,3140.09%6636 Township
Union122,1742,154-0.18%6036 Township
Union131,9812,148-2.37%4445 Township
Washington141,8091,813-0.17%3848 Township
Gerald151,3501,376-0.3%9131 City
Parkway16634658-0.63%1,3490 Village
Union17507507-0.2%1436 Township
Union18393429-1.5%847 Township
Union19378380-0.53%1037 Township
Washington20362378-1.36%657 Township
Berger212692680%8570 City
Washington22262287-1.5%647 Township
Lake Tekakwitha232372330.42%1,1850 Village
Washington241631630.62%536 Township
Leslie251591511.92%436 Township
Leslie261571540.64%9240 Village
Washington271531520%721 Township
Washington281481460%436 Township
Washington2992910%336 Township
Charmwood3016160%1140 Town

Franklin County Cities Summary

Largest City

Wildwood is the largest city in Franklin County, with a population of 34,928.

Smallest City

Charmwood is the smallest city in Franklin County, with a population of 16.

10 Largest Cities

There are 30 cities in Franklin County, Missouri.

Location of Franklin County