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 218 as of July 1, 2017. 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, 2017.

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, 2017)


Total Population 218
Daytime Population: Workers 49
Daytime Population: Residents 110
Total Daytime Population (TDP) 159
Ratio TDP/Total Population1 0.73
Population in Households 218
Population in Familes 175
Population in Group Qrtrs 0
Population Density2 301
Diversity Index3 24


Median Household Income $40,339
Average Household Income $48,686
Per Capita Income $20,277


Total Housing Units 104 (100%)
Owner Occupied HU 65 (62.5%)
Renter Occupied HU 34 (32.7%)
Vacant Housing Units 6 ( 5.8%)
Median Home Value $68,750
Average Home Value $82,955


Total Households 98
Average Household Size 2.22
Family Households 63
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% -0.28%
Households -0.14% -0.2%
Families 0.45% -0.32%
Median Household Income   1.1%
Per Capita Income   2.04%

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, 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 # 1188 13th
Population Density # 1193 13th
Diversity Index # 424 69th
Median Household Income # 1170 15th
Per Capita Income # 1255 8th

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

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