Jefferson County MO Information


Jefferson County Subdivisions

Jefferson County MO Data & Demographics (As of July 1, 2015)


Total Population 221,656
Population in Households 219,673
Population in Familes 185,415
Population in Group Qrtrs 1,983
Population Density1 338
Diversity Index2 11


Total Households 83,687
Average Household Size 2.62
Family Households 61,143
Average Family Size 3


Total Housing Units 90,108 (100%)
Owner Occupied HU 67,774 (75.2%)
Renter Occupied HU 15,913 (17.7%)
Vacant Housing Units 6,421 ( 7.1%)
Median Home Value $201,072
Average Home Value $218,307


Median Household Income $55,120
Average Household Income $66,318
Per Capita Income $25,132
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.25% 0.36%
Households 0.46% 0.44%
Families 0.35% 0.36%
Median Household Income   3.08%
Per Capita Income   2.92%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


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, 2015 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 Density1 # 7 95th
Diversity Index2 # 80 31st
Median Household Income # 7 95th
Per Capita Income # 12 90th

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