Saint Louis, MO Profile: Facts, Map & Data


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Saint Louis, Missouri - Basic Facts

The City of Saint Louis is the 2nd largest city in Missouri with a population of 316,704 as of July 1, 2015. Saint Louis ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Missouri. See peer rankings below.

The primary coordinate point for Saint Louis is located at latitude 38.6357 and longitude -90.2446 in St. Louis (city) County. The formal boundaries for the City of Saint Louis (see map below) encompass a land area of 61.95 sq. miles and a water area of 4.12 sq. miles. St. Louis (city) County is in the Central time zone (GMT -6). The elevation is 466 feet.

The City of Saint Louis (GNIS ID: 767557) has a C7 Census Class Code which indicates an incorporated place that is independent of any county. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Saint Louis population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

Alternate Unofficial Names for Saint Louis: City of Saint Louis, Lacledes Village, Mound City, Pain Court, Pancore, Saint Lewis, Saint Louis City.

City of Saint Louis, MO Boundary Map


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Saint Louis, 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.

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Saint Louis, MO - Peer Comparisons by Rank and Percentile

The table below compares Saint Louis to the other 1,032 incorporated cities, towns and CDPs 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 # 2 100th
Population Density1 # 24 98th
Diversity Index2 # 19 98th
Median Household Income # 748 28th
Per Capita Income # 367 65th

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