Gilliam County is a county of 1,971 people in Oregon. At a median age of 50.1, this is an older place than the country as a whole. 21% of adults hold a bachelor's degree, below the 36% national rate. There are 2 people per square mile. Home values have more than doubled since 2000, reaching $189,300. The foreign-born share is 4%.
At a glance
Lower income
median household income $66,917, below the US median
US median: $82,259
Older
median age 50.1
US median: 38.9
Less educated
21% hold a bachelor's degree
US average: 36%
Less affordable
home values up 32%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Gilliam County
What changed most since 1990
Median home value (2024 dollars)$76,802 → $189,300(+146%)US over the same years: +67%
Median age37.8 → 50.1(+12.3 years)US over the same years: +6.0 years
Homes owned by their occupants66.7% → 74.1%(+7.4 pts)US over the same years: +0.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)29.2%(66)
US avg: 26.4%
Gulf War (1990s)17.7%(40)
US avg: 24.3%
Vietnam era50.4%(114)
US avg: 33.1%
Korean War5.8%(13)
US avg: 4.5%
World War II5.8%(13)
US avg: 1%
Share of the 226 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Gilliam County, decade by decade
Gilliam County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
1,717
$57,650
$76,802
18.7%
8.6
2000
1,915
$61,228
$143,000
13.4%
9.6
2010
1,871
$60,633
$143,713
18.8%
18.3
2020
1,995
$50,709
$136,839
21.7%
28.0
2024
1,971
$66,917
$189,300
21.0%
42.6
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
