Union County, Oregon Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 23rd-largest in Oregon
The population of Union County, Oregon is 26,192 as of the 2023 American Community Survey, making it the 23rd-largest county in Oregon. The median household income is $64,212, the median home value is $260,500, and the median age is 40.1.
The population of Union County has grown 1.3% since 2010 (25,725 → 26,058), a +0.09% annualized rate.
26,192
Population
+0.09%
Annual growth
13
People / sq mi
$64,212
Median Income
$260,500
Median Home Value
Union County covers 2,037 sq mi of land at 12.9 people per square mile.
About Union County, OR
Homeownership is the standout figure in Union County: 64.6% of homes are owner-occupied, close to the national rate. With 26,192 residents, Union County is a county in Oregon. It ranks #23 among counties in Oregon by population.
The typical household here earns about $64,212, below the US median of $78,538. The poverty rate is 8.8%, below the national 12.4%. A typical home is worth $260,500, with typical rent around $982.
Degree attainment is mid-range for US counties: 24.9% of adults hold a four-year degree, below the national 35.0%. Around 6.8% of workers work from home, below the national 14.0%, and the average commute runs about 17 minutes each way.
Union County Population History (2010-2024)
The county of Union County had a population of 25,725 in 2010 and 26,058 in 2024, a 1.3% growth over 14 years. The peak was 26,733 in 2018. Average annual growth rate: 0.10%.
26,058
Population (2024)
25,725
Population (2010)
26,733
Peak (2018)
0.10%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 25,725 |
| 2011 | 25,906 |
| 2012 | 25,801 |
| 2013 | 25,531 |
| 2014 | 25,645 |
| 2015 | 25,720 |
| 2016 | 26,082 |
| 2017 | 26,410 |
| 2018 | 26,733 |
| 2019 | 26,733 |
| 2020 | 26,168 |
| 2021 | 26,287 |
| 2022 | 26,167 |
| 2023 | 26,038 |
| 2024 | 26,058 |
Race & Ethnicity
| White | 88.4% |
| Black or African American | 0.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.3% |
| Two or More Races | 0.0% |
Age & Sex
40.1
Median Age
50.5%
Female
49.5%
Male
21.0%
Age 65+
Age Distribution
Children (under 15): 17.6% · Seniors (65+): 21.0%
Income & Poverty
| Median household income | $64,212$-16,214 vs state |
| Mean household income | $83,393 |
| Per-capita income | $34,745 |
| Poverty rate | 8.8%+1.5% vs state |
| Unemployment rate | 3.3% |
| Employment-to-population | 55.5% |
Top Industries by Employment
The largest employment sector in Union County is professional & business services, accounting for 24.0% of workers.
How residents commute
0.3%
Drive alone
5.6%
Carpool
73.6%
Public transit
6.8%
Work from home
17.2 min
Avg commute
Housing
$260,500$-193,700 vs state
Median home value
$982
Median rent
64.6%
Homeownership rate
11,786
Total housing units
92.1%
Occupied
7.9%
Vacant
35.4%
Renter-occupied
Social & access
93.1%
With health insurance
92.4%
With broadband internet
39.8%
Foreign-born
8.0%
Veterans (18+)
17.5%
With a disability
95.0%
Speak language other than English at home
Education
93.5%
High School+
24.9%
Bachelor's+
Largest cities in Oregon
Other counties in Oregon
Part of Oregon
Metro areas in Oregon
County rankings
Frequently Asked Questions
Union County, Oregon has a population of 26,192 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 23rd-largest county in Oregon. Population density is 13 people per square mile.
The population of Union County has grown 1.3% since 2010 (25,725 → 26,058), a +0.09% annualized rate.
The median household income in Union County, Oregon is $64,212, with mean (average) household income of $83,393 and per-capita income of $34,745. 8.8% of residents live below the federal poverty level.
In Union County, the largest racial and ethnic groups are White (88.4%), Hispanic or Latino (2.3%), Black or African American (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Union County, Oregon is 40.1 years. Residents are 50.5% female and 49.5% male.
The median home value in Union County is $260,500 and median monthly rent is $982. 64.6% of occupied housing units are owner-occupied. The county has 11,786 total housing units, 7.9% of which are vacant.
The largest employment sector in Union County, Oregon is professional, scientific, and management services, employing 24.0% of workers. The unemployment rate is 3.3%.
Portland is among the largest cities associated with Union County, Oregon, with a population of 642,715.
Union County, OR Climate
Union County, OR has an average annual temperature of 9.2°C (49°F) and receives about 438 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.2°C
Avg Temp
438
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 0° / 32° | 45 mm |
| February | 3° / 37° | 35 mm |
| March | 5° / 42° | 38 mm |
| April | 8° / 47° | 41 mm |
| May | 12° / 54° | 49 mm |
| June | 16° / 61° | 38 mm |
| July | 19° / 67° | 17 mm |
| August | 19° / 67° | 21 mm |
| September | 15° / 58° | 25 mm |
| October | 9° / 48° | 32 mm |
| November | 4° / 39° | 51 mm |
| December | 0° / 32° | 46 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Union County, OR
The most comfortable months to visit Union County, OR are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -4°C low). November is usually the wettest month.
Where to stay near Union County
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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.