Saint Ann, MO Profile: Facts, Map & Data


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Saint Ann, Missouri - Basic Facts

The City of Saint Ann had a population of 12,961 as of July 1, 2017. Saint Ann 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 Ann is located at latitude 38.7266 and longitude -90.3871 in St. Louis County. The formal boundaries for the City of Saint Ann (see map below) encompass a land area of 3.19 sq. miles and a water area of 0 sq. miles. St. Louis County is in the Central time zone (GMT -6). The elevation is 584 feet.

The City of Saint Ann (GNIS ID: 2396469) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Saint Ann is located within Township of Airport, a minor civil division (MCD) of St. Louis County.

Beneath the boundary map are tables with Saint Ann population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Saint Ann: Mary Ridge.

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City of Saint Ann, MO Boundary Map

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Saint Ann, MO Data & Demographics (As of July 1, 2017)


Total Population 12,961
Daytime Population: Workers 2,901
Daytime Population: Residents 6,624
Total Daytime Population (TDP) 9,525
Ratio TDP/Total Population1 0.73
Population in Households 12,934
Population in Familes 9,438
Population in Group Qrtrs 27
Population Density2 4,067
Diversity Index3 56


Median Household Income $42,543
Average Household Income $52,743
Per Capita Income $23,502


Total Housing Units 6,502 (100%)
Owner Occupied HU 3,241 (49.8%)
Renter Occupied HU 2,598 (40.0%)
Vacant Housing Units 663 (10.2%)
Median Home Value $106,061
Average Home Value $120,532


Total Households 5,839
Average Household Size 2.22
Family Households 3,217
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 -0.06% -0.01%
Households -0.13% -0.04%
Families -0.18% -0.17%
Median Household Income   2.09%
Per Capita Income   2.56%

Saint Ann, MO - Peer Comparisons by Rank and Percentile

The table below compares Saint Ann to the other 1,032 incorporated cities, towns and CDPs 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 # 64 94th
Population Density # 41 96th
Diversity Index # 27 97th
Median Household Income # 539 48th
Per Capita Income # 437 58th

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

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