Saint Johns, IL Profile: Facts, Map & Data


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Saint Johns, Illinois - Basic Facts

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The Village of Saint Johns had a population of 220 as of July 1, 2016. Saint Johns ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Saint Johns is located at latitude 38.0349 and longitude -89.2386 in Perry County. The formal boundaries for the Village of Saint Johns (see map below) encompass a land area of 0.73 sq. miles and a water area of 0.04 sq. miles. Perry County is in the Central time zone (GMT -6). The elevation is 466 feet.

The Village of Saint Johns (GNIS ID: 2399165) 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 Village of Saint Johns is located within Du Quoin Number 9 Election Precinct, a minor civil division (MCD) of Perry County.

Beneath the boundary map are tables with Saint Johns population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Saint Johns: Saint John.

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Village of Saint Johns, IL Boundary Map

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Boundary Maps: Du Quoin Number 9 Election Precinct | Perry County | Illinois Counties

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Saint Johns, IL Data & Demographics (As of July 1, 2016)


Total Population 220
Population in Households 220
Population in Familes 176
Population in Group Qrtrs 0
Population Density1 303
Diversity Index2 24


Total Households 98
Average Household Size 2.24
Family Households 63
Average Family Size 3


Total Housing Units 105 (100%)
Owner Occupied HU 65 (61.9%)
Renter Occupied HU 33 (31.4%)
Vacant Housing Units 7 ( 6.7%)
Median Home Value $65,217
Average Home Value $80,682


Median Household Income $37,397
Average Household Income $45,668
Per Capita Income $18,885
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.07% -0.18%
Households -0.16% -0.2%
Families 0.52% -0.32%
Median Household Income   0.33%
Per Capita Income   0.77%
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.

Saint Johns, IL - Peer Comparisons by Rank and Percentile

The table below compares Saint Johns to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2016 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 # 1189 13th
Population Density1 # 1197 13th
Diversity Index2 # 420 69th
Median Household Income # 1213 11th
Per Capita Income # 1282 6th

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

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