Jefferson County MO Information


Jefferson County Subdivisions

Jefferson County MO Data & Demographics (As of July 1, 2017)


Total Population 226,606
Daytime Population: Workers 54,269
Daytime Population: Residents 115,928
Total Daytime Population (TDP) 170,197
Ratio TDP/Total Population1 0.75
Population in Households 224,623
Population in Familes 188,976
Population in Group Qrtrs 1,983
Population Density2 345
Diversity Index3 12


Median Household Income $59,042
Average Household Income $72,356
Per Capita Income $27,259


Total Housing Units 91,035 (100%)
Owner Occupied HU 67,718 (74.4%)
Renter Occupied HU 17,088 (18.8%)
Vacant Housing Units 6,229 ( 6.8%)
Median Home Value $172,722
Average Home Value $192,180


Total Households 84,806
Average Household Size 2.65
Family Households 61,770
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.49% 0.54%
Households 0.52% 0.56%
Families 0.39% 0.48%
Median Household Income   2.77%
Per Capita Income   2.85%


Jefferson County MO - Peer Comparisons by Rank and Percentile

The table below compares Jefferson County to the other 115 counties and county equivalents in Missouri by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 7 95th
Population Density # 7 95th
Diversity Index # 75 36th
Median Household Income # 6 96th
Per Capita Income # 12 90th

Additional comparisons and rankings can be made with a VERY EASY TO USE Missouri Census Data Comparison Tool.