Gilliam County, Oregon
Gilliam County: county in Oregon, United States
About
Gilliam County is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 1,871 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 1,975 inhabitants. Its county seat is Condon. The county was created 141 years ago in 1884.
County Snapshot
Gilliam County at a glance
Gilliam County currently has 3 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
3
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Oregon counties
36
Open related pagesLargest city
CondonPopulation 714
Top linked places
Quick Facts about Gilliam County
| Population | 1,975 (2020) |
| Country | United States of America |
| State | Oregon (United States) |
| Area | 3167 km2 |
| Official name | Gilliam County |
| Water as percent of area | 1.5% |
| Land as percent of area | 98.5% |
| Latitude & Longitude | 45.3781,-120.2109 |
| Named for | Cornelius Gilliam |
| Altitude | 2,503 feet / 763 meters |
| Capital | Condon |
| Establishment | January 01, 1885 |
| Time Zone | America/Los_Angeles |
| Local time | 00:28:28 (15th April 2026) |
| Density | 1 Pop. per km² as of 2020 |
| Population growth | 5.27% (2010-2020) |
| Weather | 39℉ Chance Light Rain 7-days weather |
Geography
Gilliam County is located at 45°22'41"N 120°12'39"W (45.3780600, -120.2108700). It has 5 neighbors: Morrow County, Sherman County, Wheeler County, Wasco County and Klickitat County.
Gilliam County map
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The largest city of Gilliam County is Condon with a population of 714. Other cities include, Arlington population 626 and Lonerock population 22. See all Gilliam County cities & populated places.
Gilliam County Populated Places
Cities, towns, neighborhoods & other populated places in Gilliam County.
| City Name | Population | Title |
|---|---|---|
| Condon | 714 | City in Oregon, USA |
| Arlington | 626 | City in Oregon, USA |
| Lonerock | 22 | City in Oregon, USA |
Weather
A chance of rain. Mostly cloudy, with a low around 39.
7-Day ForecastOfficial website of Gilliam County
Official Website- Condon
Demographics
The population of Gilliam County increased by 5.27% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 1,871 | - | census |
| 2011 | 1,951 | 4.1% | estimation process |
| 2012 | 1,952 | 0.05% | estimation process |
| 2013 | 1,943 | -0.46% | estimation process |
| 2014 | 1,930 | -0.67% | estimation process |
| 2015 | 1,868 | -3.32% | estimation process |
| 2016 | 1,857 | -0.59% | estimation process |
| 2017 | 1,862 | 0.27% | estimation process |
| 2018 | 1,893 | 1.64% | estimation process |
| 2019 | 1,912 | 0.99% | estimation process |
| 2020 | 1,975 | 3.19% | estimation process |
People born in Gilliam County (2)
People born in Gilliam County, including jazz trumpeter Doc Severinsen, politician Earl Snell, .
More notable people
Oregon Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Multnomah County | 815,637 | County in Oregon, United States |
| Portland | 656,751 | The twenty-sixth most populous city in the United States and the center of the Portland metropolitan area. |
| Washington County | 603,514 | County in Oregon, United States |
| Clackamas County | 421,596 | County in Oregon, United States |
| Lane County | 382,986 | County in Oregon, United States |
| Marion County | 349,204 | County in Oregon, United States |
| Jackson County | 221,844 | County in Oregon, United States |
| Deschutes County | 201,769 | County in Oregon, United States |
| Salem | 175,891 | The capital of Oregon. |
| Eugene | 173,236 | The second most populous city in Oregon. |
| Linn County | 131,054 | County in Oregon, United States |
| Terrebonne | 117,664 | Census-designated place in Deschutes County, Oregon |
| Douglas County | 111,364 | County in Oregon, United States |
| Hillsboro | 110,985 | The most populous city in Washington County, Oregon. |
| Gresham | 110,031 | The second most populous city in Multnomah County, Oregon. |
| Yamhill County | 107,664 | County in Oregon, United States |