St. Louis (city) County MO Information


St. Louis (city) County Subdivisions

St. Louis (city) County MO Data & Demographics (As of July 1, 2015)


Total Population 316,704
Population in Households 304,702
Population in Familes 203,829
Population in Group Qrtrs 12,002
Population Density1 5,116
Diversity Index2 60


Total Households 142,866
Average Household Size 2.13
Family Households 67,105
Average Family Size 3


Total Housing Units 177,376 (100%)
Owner Occupied HU 63,236 (35.7%)
Renter Occupied HU 79,630 (44.9%)
Vacant Housing Units 34,510 (19.5%)
Median Home Value $154,313
Average Home Value $198,320


Median Household Income $35,495
Average Household Income $48,873
Per Capita Income $22,442
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.16% -0.07%
Households 0.11% 0.09%
Families -0.11% -0.05%
Median Household Income   2.26%
Per Capita Income   3.02%
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.


St. Louis (city) County MO - Peer Comparisons by Rank and Percentile

The table below compares St. Louis (city) 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 # 4 97th
Population Density1 # 1 100th
Diversity Index2 # 1 100th
Median Household Income # 91 22nd
Per Capita Income # 27 77th

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