Columbia, IA demographics:
population, income, and more

Total population
327
25.3% year-over-year change
Median household income
$118,882/yr
% year-over-year change
Housing units
144
4.3% year-over-year change

Columbia population

How many people live in Columbia

Columbia is home to 327 residents, according to the most recent Census data. Gender-wise, 42.5% of Columbia locals are male, and 57.5% are female.

Total population
327
25.3% year-over-year change
Gender ratio
Male
42.5%
139
Female
57.5%
188
Value Percent YoY change
Male 139 42.5% 0.7%
Female 188 57.5% 52.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Columbia is 47, with the population distributed as follows: about 21.4% are children under 15, then 27.8% are in the 15 to 24 age group. Finally, around 6.1% are 65 or older.

Median age
47.1
Age breakdown
Under 15
21.4%
15 to 24
27.8%
25 to 44
0%
45 to 64
44.6%
Over 65
6.1%
Value Percent YoY change
Under 15 70 21.4% 59.1%
15 to 24 91 27.8% 152.8%
45 to 64 146 44.6% 22.7%
Over 65 20 6.1% -16.7%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 327 100% 25.3%
Racial breakdown
White
96.6%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
0%
Other
3.4%
Value Percent
White 316 96.6%
Other 11 3.4%

Households in Columbia

A peek inside Columbia households

Columbia has 89 households, with an average of 4 members in each. Of these, 77.5% are families, while the remaining 22.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
89
-20.5% year-over-year change
Average people per household
4
Non-family households
20
Family households
69
Value Percent YoY change
Non-family households 20 22.5% -60.8%
Family households 69 77.5% 13.1%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Columbia

The housing landscape of Columbia

Columbia's housing consists of 144 units, with 100% being detached single-family homes ideal for those wanting space.

Housing units
144
4.3% year-over-year change
Housing types
Value Percent
1 unit, detached 144 100%
Homes built since 2020
% year-over-year change

The age of buildings in Columbia

In Columbia, the median construction year is 1938. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 74 51.4% 111.4%
Built between 1960 and 1969 14 9.7% 250.0%
Built between 1970 and 1979 16 11.1% -68.0%
Built between 1980 and 1989 11 7.6% 0.0%
Built between 2000 and 2009 9 6.2% -30.8%
Built between 2010 and 2019 20 13.9% -4.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Columbia occupancy rates

Out of the 89 occupied housing units in Columbia, 87.6% are owner-occupied, while 12.4% are lived in by tenants. Meanwhile, 38.2% of all homes on the local market sit vacant.

Occupied housing units
89
-20.5% year-over-year change
Occupancy breakdown
Renter occupied
11
Owner occupied
78
Value Percent YoY
change
Renter occupied 11 12.4% N/A
Owner occupied 78 87.6% -30.4%
Unoccupied housing units
38.2%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Education in Columbia

Columbia education at a glance

About 36.4% of the population in Columbia went to high school, while 38.8% pursued college studies. Another 9.9% earned an associate degree and 14.9% hold a bachelor’s.

Education level
Value Percent YoY change
High school diploma 88 36.4% 17.3%
College diploma 94 38.8% 104.3%
Associate degree 24 9.9% -61.9%
Bachelor's degree 36 14.9% 33.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Columbia

How much people earn in Columbia

The average annual household income in Columbia was $89,739 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +34% change from the previous year.

Average household income in Columbia
$89,739/year
34.0% year-over-year change
Median household income in Columbia
$118,882/year
% year-over-year change

Columbia income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $119,605 overall. Overall, 93.9% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $119,605 1.9%
Above poverty level
307
Below poverty level
20
Value Percent YoY
change
Above poverty level 307 93.9% 27.9%
Below poverty level 20 6.1% -4.8%

Employment in Columbia

Workforce and job types in Columbia

49% of the working population are employed in professional or administrative positions, while 51% are in hands-on or service-based jobs. Also, 18.2% run their own businesses, 77.3% are employed by private companies, and 4.6% work in the public sector.

Workforce demographics

White collar
97
Blue collar
101
Value Percent YoY change
White collar 97 49% 4.3%
Blue collar 101 51% 44.3%
Employer type
Self employees
18.2%
Private companies
77.3%
Governmental workers
4.6%
Not for profit companies
0%
Value Percent YoY change
Self employees 36 18.2% 33.3%
Private companies 153 77.3% 24.4%
Governmental workers 9 4.6% -30.8%

Transportation in Columbia

How people get around in Columbia

Means of transportation
Value Percent YoY change
Car 171 100% 14.8%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Columbia by zipcode?

Zipcode Population Number of households Median income Average income
50057 327 89 $118,882 $89,739

Explore more communities

FAQs about Columbia demographics 

What is the total population of Columbia?

Columbia has a total population of 327 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +25.3% compared to a year ago.

What is the gender ratio in Columbia?

The gender ratio in Columbia is as follows:
  • 42.5% males (139 residents)
  • 57.5% females (188 residents)

What is the median age in Columbia?

The median age in Columbia is 47.1.

What is the age distribution of the population in Columbia?

The age distribution in Columbia is as follows:
  • Under 15: 21.4% (70 residents)
  • Ages 15-24: 27.8% (91 residents)
  • Ages 25-44: 0% ( residents)
  • Ages 45-64: 44.6% (146 residents)
  • Over 65: 6.1% (20 residents)

What is the racial and ethnic makeup of Columbia?

The racial and ethnic makeup of Columbia is as follows:
  • White: 96.6% (316 residents)
  • Black or African American: 0% ( residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 0% ( residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 0% ( residents)
  • Other: 3.4% (11 residents)

What percentage of the population in Columbia are U.S.-born citizens?

U.S.-born citizens represent 100% of the population in Columbia.

How many housing units are there in Columbia?

There are 144 housing units in Columbia, reflecting a +4.3% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Columbia and what is the average household size?

Columbia has a total of 89 households, with an average of 4 people in each.

What is the median household income in Columbia?

Columbia has a median household income of $118,882, representing a % shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Columbia?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 49% (97 residents)
  • Blue-collar workers: 51% (101 residents)

Places of employment:
  • Self-employed: 18.2% (36 residents)
  • Private companies: 77.3% (153 residents)
  • Governmental workers: 4.6% (9 residents)
  • Not-for-profit companies: 0% ( residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025