Columbia, IL Profile: Facts, Map & Data


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Columbia, Illinois - Basic Facts

The City of Columbia had a population of 10,437 as of July 1, 2018.

The primary coordinate point for Columbia is located at latitude 38.4581 and longitude -90.216 in Monroe County. The formal boundaries for the City of Columbia (see map below) encompass a land area of 10.15 sq. miles and a water area of 0.05 sq. miles. Monroe County is in the Central time zone (GMT -6). The elevation is 502 feet.

While the primary coordinates for City of Columbia are located in Monroe County, it should be noted that the formal boundaries for this community also extend into and St. Clair County.

The City of Columbia (GNIS ID: 2393604) 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 Columbia is located within Precinct 34 Election Precinct, a minor civil division (MCD) of Monroe County.

Beneath the boundary map are tables with Columbia population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of Columbia, IL Boundary Map

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Boundary Maps: Precinct 34 Election Precinct | Monroe County | Illinois Counties

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Columbia, IL Data & Demographics (As of July 1, 2018)


Total Population 10,437
Population in Households 10,349
Population in Familes 8,779
Population in Group Qrtrs 88
Population Density2 1,028
Diversity Index3 10


Median Household Income $73,645
Average Household Income $96,050
Per Capita Income $37,835


Total Housing Units 4,253 (100%)
Owner Occupied HU 3,279 (77.1%)
Renter Occupied HU 779 (18.3%)
Vacant Housing Units 195 ( 4.6%)
Median Home Value $197,039
Average Home Value $214,091


Total Households 4,058
Average Household Size 2.55
Family Households 2,858
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 0.92% 0.97%
Households 0.9% 0.96%
Families 0.76% 0.86%
Median Household Income   2.53%
Per Capita Income   2.65%

Columbia, IL - Peer Comparisons by Rank and Percentile

The table below compares Columbia to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2018 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 # 215 84th
Population Density # 728 47th
Diversity Index # 846 38th
Median Household Income # 256 81st
Per Capita Income # 184 87th

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

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