Saint John, IN Profile: Facts, Map & Data


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Saint John, Indiana - Basic Facts

The Town of Saint John had a population of 17,078 as of July 1, 2017. Saint John ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Indiana. See peer rankings below.

The primary coordinate point for Saint John is located at latitude 41.4418 and longitude -87.4678 in Lake County. The formal boundaries for the Town of Saint John (see map below) encompass a land area of 11.65 sq. miles and a water area of 0.09 sq. miles. Lake County is in the Central time zone (GMT -6). The elevation is 725 feet.

The Town of Saint John (GNIS ID: 2396898) 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 Town of Saint John is located within Township of Saint John, a minor civil division (MCD) of Lake County.

Beneath the boundary map are tables with Saint John 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 John: Prairie West, Western Prairie.

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Town of Saint John, IN Boundary Map

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Boundary Maps: Township of Saint John | Lake County | Indiana Counties

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Saint John, IN Data & Demographics (As of July 1, 2017)


Total Population 17,078
Daytime Population: Workers 4,850
Daytime Population: Residents 7,990
Total Daytime Population (TDP) 12,840
Ratio TDP/Total Population1 0.75
Population in Households 17,070
Population in Familes 15,553
Population in Group Qrtrs 8
Population Density2 1,466
Diversity Index3 32


Median Household Income $97,940
Average Household Income $112,234
Per Capita Income $38,678


Total Housing Units 5,907 (100%)
Owner Occupied HU 5,470 (92.6%)
Renter Occupied HU 378 ( 6.4%)
Vacant Housing Units 60 ( 1.0%)
Median Home Value $270,311
Average Home Value $296,604


Total Households 5,847
Average Household Size 2.92
Family Households 4,761
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 1.95% 1.48%
Households 2.05% 1.57%
Families 1.66% 1.42%
Median Household Income   1.1%
Per Capita Income   2.27%

Saint John, IN - Peer Comparisons by Rank and Percentile

The table below compares Saint John to the other 680 incorporated cities, towns and CDPs in Indiana 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 # 54 92nd
Population Density # 292 57th
Diversity Index # 93 86th
Median Household Income # 11 99th
Per Capita Income # 29 96th

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

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