Gilliam County, Oregon Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 34th-largest in Oregon
The population of Gilliam County, Oregon is 2,002 as of the 2023 American Community Survey, making it the 34th-largest county in Oregon. The median household income is $64,219, the median home value is $158,400, and the median age is 50.3.
The population of Gilliam County has grown 4.8% since 2010 (1,880 → 1,971), a +0.34% annualized rate.
2,002
Population
+0.34%
Annual growth
2
People / sq mi
$64,219
Median Income
$158,400
Median Home Value
Gilliam County covers 1,205 sq mi of land at 1.7 people per square mile.
About Gilliam County, OR
The poverty rate is what most separates Gilliam County from the typical county: 3.3% of residents live below the federal poverty line, against 12.4% nationally. With 2,002 residents, Gilliam County is a county in Oregon. It ranks #34 among counties in Oregon by population.
Median household income is $64,219, below the US median of $78,538. Hardship is rare relative to US counties: a poverty rate of just 3.3%, below the national 12.4%. Median home value is $158,400, with typical rent around $1,084.
Roughly 20.9% of adults have a bachelor’s, below the national 35.0%. Remote work is below the national 14.0% at 9.5%, and the average commute runs about 17 minutes each way.
Gilliam County Population History (2010-2024)
The county of Gilliam County had a population of 1,880 in 2010 and 1,971 in 2024, a 4.8% growth over 14 years. The peak was 2,035 in 2023. Average annual growth rate: 0.36%.
1,971
Population (2024)
1,880
Population (2010)
2,035
Peak (2023)
0.36%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 1,880 |
| 2011 | 1,950 |
| 2012 | 1,949 |
| 2013 | 1,940 |
| 2014 | 1,927 |
| 2015 | 1,866 |
| 2016 | 1,852 |
| 2017 | 1,860 |
| 2018 | 1,883 |
| 2019 | 1,911 |
| 2020 | 2,015 |
| 2021 | 2,011 |
| 2022 | 2,012 |
| 2023 | 2,035 |
| 2024 | 1,971 |
Race & Ethnicity
| White | 84.1% |
| Black or African American | 0.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 6.9% |
| Two or More Races | 0.0% |
Age & Sex
50.3
Median Age
46.6%
Female
53.4%
Male
31.7%
Age 65+
Age Distribution
Children (under 15): 15.9% · Seniors (65+): 31.7%
Income & Poverty
| Median household income | $64,219$-16,207 vs state |
| Mean household income | $77,640 |
| Per-capita income | $34,999 |
| Poverty rate | 3.3%-4.0% vs state |
| Unemployment rate | 0.9% |
| Employment-to-population | 50.9% |
Top Industries by Employment
The largest employment sector in Gilliam County is professional & business services, accounting for 18.4% of workers.
How residents commute
0.0%
Drive alone
11.1%
Carpool
67.8%
Public transit
9.5%
Work from home
16.5 min
Avg commute
Housing
$158,400$-295,800 vs state
Median home value
$1,084
Median rent
75.6%
Homeownership rate
1,111
Total housing units
78.2%
Occupied
21.8%
Vacant
24.4%
Renter-occupied
Social & access
94.2%
With health insurance
93.3%
With broadband internet
37.2%
Foreign-born
13.6%
Veterans (18+)
17.3%
With a disability
94.4%
Speak language other than English at home
Education
87.1%
High School+
20.9%
Bachelor's+
Largest cities in Oregon
Other counties in Oregon
Part of Oregon
Metro areas in Oregon
County rankings
Frequently Asked Questions
Gilliam County, Oregon has a population of 2,002 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 34th-largest county in Oregon. Population density is 2 people per square mile.
The population of Gilliam County has grown 4.8% since 2010 (1,880 → 1,971), a +0.34% annualized rate.
The median household income in Gilliam County, Oregon is $64,219, with mean (average) household income of $77,640 and per-capita income of $34,999. 3.3% of residents live below the federal poverty level.
In Gilliam County, the largest racial and ethnic groups are White (84.1%), Hispanic or Latino (6.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Gilliam County, Oregon is 50.3 years. Residents are 46.6% female and 53.4% male.
The median home value in Gilliam County is $158,400 and median monthly rent is $1,084. 75.6% of occupied housing units are owner-occupied. The county has 1,111 total housing units, 21.8% of which are vacant.
The largest employment sector in Gilliam County, Oregon is professional, scientific, and management services, employing 18.4% of workers. The unemployment rate is 0.9%.
Portland is among the largest cities associated with Gilliam 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.