St John city, MO Profile: Facts & Data


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St John city, Missouri - Basic Facts

The City of Saint John had a population of 6,627 as of July 1, 2018. St John city 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 St John city is located at latitude 38.7148 and longitude -90.3463 in St. Louis County. The formal boundaries for the City of Saint John (see map below) encompass a land area of 1.42 sq. miles and a water area of 0 sq. miles.

The City of Saint John (GNIS ID: 2396495) 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 John is located within Township of Midland, a minor civil division (MCD) of St. Louis County.

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  1. St John city 2018 Demographic Data
  2. Growth Rates for St John city (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Missouri Research Tools (Easy Tools & Current Data)
  3. Missouri Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


St John city, MO Data & Demographics (As of July 1, 2018)


Total Population 6,627
Population in Households 6,549
Population in Familes 5,063
Population in Group Qrtrs 78
Population Density2 4,672
Diversity Index3 61


Median Household Income $45,574
Average Household Income $55,466
Per Capita Income $22,396


Total Housing Units 2,984 (100%)
Owner Occupied HU 1,803 (60.4%)
Renter Occupied HU 852 (28.6%)
Vacant Housing Units 329 (11.0%)
Median Home Value $84,211
Average Home Value $99,487


Total Households 2,655
Average Household Size 2.47
Family Households 1,668
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.2% 0.17%
Households 0.14% 0.13%
Families 0.07% 0.04%
Median Household Income   2.74%
Per Capita Income   3.04%

St John city, MO - Peer Comparisons by Rank and Percentile

The table below compares St John city to the other 1,032 incorporated cities, towns and CDPs in Missouri by rank and percentile using July 1, 2018 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 # 119 89th
Population Density # 32 97th
Diversity Index # 22 98th
Median Household Income # 478 54th
Per Capita Income # 589 43rd

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

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Compare Missouri July 1, 2018 Data
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