Gilliam County, Oregon

Gilliam County population, land area and income

Gilliam County had 1,971 residents in the Census Vintage 2024 estimate, on 1,204.7 square miles of land. It ranks 35th of 36 in Oregon by population and 24th by land area. That works out to 1.6 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Oregon has 46,128 residents, so Gilliam County has 4% of the typical county's population.

Its SAIPE 2023 median household income of $74,010 is in the top quarter among 3,143 counties with an estimate.

How Gilliam County's population changed since 2020

Gilliam County lost 44 residents between the July 2020 and July 2024 estimates, a drop of 2.2%. That ranks 34th of 36 in Oregon for growth. The median Oregon county changed by +0.8%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Gilliam County recorded 75 births and 132 deaths, a natural change of -57. Net international migration added -1 and net domestic migration, people moving to or from other US counties, came to +34. The largest single component was natural change, which removed 57 people.

Where Gilliam County is

The Census internal point of Gilliam County is at 45.383000, -120.276200. It sits in UTM zone 10N. The map shades Oregon's 36 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Gilliam County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Gilliam County

No incorporated place of 1,000 or more people has residents in Gilliam County. Its 1,971 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Gilliam County

The Census 2024 county adjacency file lists 5 neighbors for Gilliam County, including 1 across a state line. The most populous is Wasco County, OR, with 26,507 residents. Distances run between Census internal points in a straight line.

• Wasco County

  26,507 people

  46 mi WSW

• WA

  Klickitat County, WA

  24,124 people

  42 mi NW

• Morrow County

  12,360 people

  33 mi E

• Sherman County

  2,002 people

  20 mi W

• Wheeler County

  1,456 people

  46 mi SSE

Distance to Salem and the nearest big city

Salem is 137.6 miles WSW of Gilliam County's internal point in a straight line. The nearest place of 100,000 or more is Bend, OR (population 106,926), 104.7 miles away. The nearest place of 10,000 or more is The Dalles, OR (population 15,884), 45.0 miles away.

Gilliam County FIPS code

The FIPS code of Gilliam County is 41021: state code 41 for Oregon plus county code 021. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $74,010.