Centralia, IL Profile: Facts, Map & Data


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Centralia, Illinois - Basic Facts

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The City of Centralia had a population of 12,829 as of July 1, 2016. Centralia ranks in the upper 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 Centralia is located at latitude 38.5221 and longitude -89.1235 in Marion County. The formal boundaries for the City of Centralia (see map below) encompass a land area of 8.19 sq. miles and a water area of 1.03 sq. miles. Marion County is in the Central time zone (GMT -6). The elevation is 492 feet.

While the primary coordinates for City of Centralia are located in Marion County, it should be noted that the formal boundaries for this community also extend into Clinton County, Jefferson County, and Washington County.

The City of Centralia (GNIS ID: 2393787) 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 Centralia is located within Township of Centralia, a minor civil division (MCD) of Marion County.

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

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Centralia, IL Boundary Map

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Boundary Maps: Township of Centralia | Marion County | Illinois Counties

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


Total Population 12,829
Population in Households 12,318
Population in Familes 8,991
Population in Group Qrtrs 511
Population Density1 1,566
Diversity Index2 34


Total Households 5,432
Average Household Size 2.27
Family Households 3,122
Average Family Size 3


Total Housing Units 6,448 (100%)
Owner Occupied HU 3,302 (51.2%)
Renter Occupied HU 2,130 (33.0%)
Vacant Housing Units 1,016 (15.8%)
Median Home Value $67,596
Average Home Value $79,106


Median Household Income $34,288
Average Household Income $46,930
Per Capita Income $20,101
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.25% -0.15%
Households -0.21% -0.12%
Families -0.45% -0.24%
Median Household Income   -0.01%
Per Capita Income   1.03%
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.

Centralia, IL - Peer Comparisons by Rank and Percentile

The table below compares Centralia 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 # 192 86th
Population Density1 # 437 68th
Diversity Index2 # 316 77th
Median Household Income # 1302 5th
Per Capita Income # 1214 11th

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

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