Saint Peter, IL Profile: Facts, Map & Data


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Saint Peter, Illinois - Basic Facts

The Village of Saint Peter had a population of 332 as of July 1, 2017. Saint Peter ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Saint Peter is located at latitude 38.8676 and longitude -88.8504 in Fayette County. The formal boundaries for the Village of Saint Peter (see map below) encompass a land area of 0.52 sq. miles and a water area of 0 sq. miles. Fayette County is in the Central time zone (GMT -6). The elevation is 597 feet.

The Village of Saint Peter (GNIS ID: 2399171) 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 Peter is located within Township of Lone Grove, a minor civil division (MCD) of Fayette County.

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

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Village of Saint Peter, IL Boundary Map

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Boundary Maps: Township of Lone Grove | Fayette County | Illinois Counties

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Saint Peter, IL Data & Demographics (As of July 1, 2017)


Total Population 332
Daytime Population: Workers 110
Daytime Population: Residents 193
Total Daytime Population (TDP) 303
Ratio TDP/Total Population1 0.91
Population in Households 332
Population in Familes 283
Population in Group Qrtrs 0
Population Density2 638
Diversity Index3 2


Median Household Income $38,759
Average Household Income $51,847
Per Capita Income $22,290


Total Housing Units 160 (100%)
Owner Occupied HU 125 (78.1%)
Renter Occupied HU 18 (11.2%)
Vacant Housing Units 17 (10.6%)
Median Home Value $75,000
Average Home Value $123,413


Total Households 143
Average Household Size 2.32
Family Households 101
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 -1.07% -0.67%
Households -0.93% -0.57%
Families 0.28% -0.6%
Median Household Income   0.9%
Per Capita Income   2.79%

Saint Peter, IL - Peer Comparisons by Rank and Percentile

The table below compares Saint Peter 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 # 1062 22nd
Population Density # 990 28th
Diversity Index # 1348 2nd
Median Household Income # 1221 11th
Per Capita Income # 1112 19th

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

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