Columbia County, Oregon Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 17th-largest in Oregon
The population of Columbia County, Oregon is 53,178 as of the 2023 American Community Survey, making it the 17th-largest county in Oregon. The median household income is $86,359, the median home value is $390,600, and the median age is 43.2.
The population of Columbia County has grown 9.5% since 2010 (49,353 → 54,063), a +0.65% annualized rate.
53,178
Population
+0.65%
Annual growth
81
People / sq mi
$86,359
Median Income
$390,600
Median Home Value
Columbia County covers 659 sq mi of land at 80.7 people per square mile.
About Columbia County, OR
Columbia County is a county in Oregon with a population of 53,178. It ranks #17 among counties in Oregon by population. The median age is 43.2, older than the national median. The population is 50.8% male and 49.2% female.
The median household income in Columbia County is $86,359, above the US median of $74,580. 5.3% of residents live below the federal poverty level. Home values sit at a median of $390,600, with monthly rent averaging $1,221. The homeownership rate of 75.7% is higher than the national rate of 64.8%.
Educational attainment in Columbia County reflects 19.2% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 11.3% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 32.9 minutes each way.
Columbia County Population History (2010-2024)
The county of Columbia County had a population of 49,353 in 2010 and 54,063 in 2024, a 9.5% growth over 14 years. The peak was 54,063 in 2024. Average annual growth rate: 0.66%.
54,063
Population (2024)
49,353
Population (2010)
54,063
Peak (2024)
0.66%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 49,353 |
| 2011 | 49,408 |
| 2012 | 49,220 |
| 2013 | 49,271 |
| 2014 | 49,513 |
| 2015 | 49,671 |
| 2016 | 50,939 |
| 2017 | 51,749 |
| 2018 | 52,408 |
| 2019 | 52,614 |
| 2020 | 52,716 |
| 2021 | 53,177 |
| 2022 | 53,589 |
| 2023 | 53,918 |
| 2024 | 54,063 |
Race & Ethnicity
| White | 87.0% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.4% |
| Two or More Races | 0.0% |
Age & Sex
43.2
Median Age
49.2%
Female
50.8%
Male
19.7%
Age 65+
Age Distribution
Children (under 15): 16.6% · Seniors (65+): 19.7%
Income & Poverty
| Median household income | $86,359+$5,933 vs state |
| Mean household income | $101,574 |
| Per-capita income | $39,526 |
| Poverty rate | 5.3%-2.0% vs state |
| Unemployment rate | 2.6% |
| Employment-to-population | 55.6% |
Top Industries by Employment
The largest employment sector in Columbia County is professional & business services, accounting for 20.1% of workers.
How residents commute
0.2%
Drive alone
2.3%
Carpool
72.3%
Public transit
11.3%
Work from home
32.9 min
Avg commute
Housing
$390,600$-63,600 vs state
Median home value
$1,221
Median rent
75.7%
Homeownership rate
21,980
Total housing units
94.2%
Occupied
5.8%
Vacant
24.3%
Renter-occupied
Social & access
94.3%
With health insurance
95.4%
With broadband internet
41.4%
Foreign-born
11.4%
Veterans (18+)
16.7%
With a disability
95.7%
Speak language other than English at home
Education
90.4%
High School+
19.2%
Bachelor's+
Largest cities in Oregon
Other counties in Oregon
Part of Oregon
Metro areas in Oregon
County rankings
Frequently Asked Questions
Columbia County, Oregon has a population of 53,178 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 17th-largest county in Oregon. Population density is 81 people per square mile.
The population of Columbia County has grown 9.5% since 2010 (49,353 → 54,063), a +0.65% annualized rate.
The median household income in Columbia County, Oregon is $86,359, with mean (average) household income of $101,574 and per-capita income of $39,526. 5.3% of residents live below the federal poverty level.
In Columbia County, the largest racial and ethnic groups are White (87.0%), Hispanic or Latino (3.4%), Black or African American (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Columbia County, Oregon is 43.2 years. Residents are 49.2% female and 50.8% male.
The median home value in Columbia County is $390,600 and median monthly rent is $1,221. 75.7% of occupied housing units are owner-occupied. The county has 21,980 total housing units, 5.8% of which are vacant.
The largest employment sector in Columbia County, Oregon is professional, scientific, and management services, employing 20.1% of workers. The unemployment rate is 2.6%.
Portland is among the largest cities associated with Columbia County, Oregon, with a population of 642,715.
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Full rankings of Oregon counties
Statewide data for Oregon
Population, race, income, age, and trends across Oregon
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.