Jefferson County, MO

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Jefferson County, Missouri cities by population

Number of cities: 22
Population: 225,913
Largest city: Arnold
Table of cities in Jefferson County, Missouri sorted by population from largest to smallest.
CityTypePopulation
Arnoldcity20,808
Festuscity12,609
MurphyCDP8,241
BarnhartCDP6,506
De Sotocity6,429
Pevelycity5,974
ImperialCDP5,119
Crystal Citycity4,743
Herculaneumcity4,599
High RidgeCDP4,201
Hillsborocity3,425
Byrnes Millcity3,116
Cedar HillCDP1,761
LaBarque CreekCDP1,016
HorineCDP911
Olympian Villagecity819
Cedar Hill Lakesvillage350
Lake Tekakwithavillage245
Parkdalevillage180
Scotsdaletown151
Kimmswickcity108
Peaceful Villagevillage90

What is the largest city in Jefferson County, Missouri?

Arnold is the largest city in Jefferson County, Missouri with a population of 20,808.

TOP-5 cities by population in Jefferson County, Missouri:
  • Arnold
  • Festus
  • Murphy
  • Barnhart
  • De Soto