Columbia Flag

Columbia

County:
Monroe County
County Seat:
No
Area (mi²):
10.55
State:
Illinois

Columbia is a city located in Monroe County, Illinois. Columbia has a 2025 population of 10,866. Columbia is currently declining at a rate of -0.3% annually and its population has decreased by -1.51% since the most recent census, which recorded a population of 11,033 in 2020.

The average household income in Columbia is $128,441 with a poverty rate of 4.96%.The median age in Columbia is 39.9 years: 37.9 years for males, and 41.5 years for females.

10.9K
Total Population
1,030
Density (mi²)
-33 -0.3%
Growth

Columbia Population

Columbia Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Columbia includes 94.44% White, and smaller percentages for Two or more races, other race, Black or African American, Asian, Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White10,44894.44%
Two or more races3262.95%
Other race1511.36%
Black or African American1030.93%
Asian330.3%
Native American20.02%

Columbia Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Columbia's average per capita income is $71,486. Household income levels show a median of $107,922. The poverty rate stands at 4.96%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$156,855-
Families$144,500$158,062
Households$107,922$128,441
Non Families$56,419$62,826

$71,486

Average Income

$107,922

Median Household Income

4.96%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)