Columbia County, Washington

Columbia County: County Washington, United States

About

Columbia County is a county located in the U.S. state of Washington. As of the 2010 census, the population was 4,078 and a population density of 2 people per km². After 10 years in 2020 county had an estimated population of 4,048 inhabitants. Its county seat is Dayton. The county was created 149 years ago in 1874.

Columbia County locator map
Location of Columbia County on Washington map.

Quick Facts about Columbia County

Population : 4,048 (2020)
Country : United States of America
State : Washington (United States)
Different from : Columbia County, Columbia County, Columbia County, Columbia County, Columbia County, Columbia County, Columbia County
Area : 2262 km2
Water as percent of area : 0.6%
Land as percent of area : 99.4%
Named for : Columbia River
Capital : Dayton
Establishment : January 01, 1875
Time Zone : America/Los_Angeles
Local time : 02:06:54 (23rd April 2024)
Density : 2 Pop. per km² as of 2020
Population growth : -0.74% (2010-2020)
Map of Washington highlighting Columbia County locator map image
Map of Washington highlighting Columbia County
Map of Washington highlighting Columbia County locator map image
Map of Washington highlighting Columbia County locator map image

Geography

Columbia County is located at 46°17'51"N 117°54'28"W (46.2975500, -117.9078800).

Columbia County map

Click "full screen" full screen map icon to open full mode. View satellite images

Columbia County Populated Places

Cities, towns, neighborhoods & other populated places in Columbia County.

City Name Population Title
Starbuck 130 Town in Columbia County, Washington, United States

  • Dayton

Demographics

According to census records, the population of Columbia County decreased by 0.74% in 10 years.

Year Population % Change Method
2010 4,078 - census
2011 4,005 -1.82% estimation process
2012 3,977 -0.7% estimation process
2013 4,002 0.62% estimation process
2014 3,985 -0.43% estimation process
2015 3,960 -0.63% estimation process
2016 3,975 0.38% estimation process
2017 4,002 0.67% estimation process
2018 4,039 0.92% estimation process
2019 3,985 -1.36% estimation process
2020 4,048 1.56% estimation process

Columbia, Columbia Kun, Columbia Kūn, Columbia konderria, Columbia megye, Comitatul Columbia, Comte de Columbia, Comté de Columbia, Condado de Columbia, Condado han Columbia, Contea di Columbia, Hrabstwo Columbia, Kantono Columbia, Kolumbija, Okrug Kolambija, Quan Columbia, Quận Columbia, ge lun bi ya xian, kalambiya ka'unti, koronbia jun, mqatʿt kwlwmbya, shhrstan klmbya washyngtn, Колумбия, Колумбія, Округ Коламбија, شهرستان کلمبیا، واشینگتن, مقاطعة كولومبيا, کولمبیا کاؤنٹی، واشنگٹن, কলম্বিয়া কাউন্টি, コロンビア郡, 哥倫比亞縣

Other places with the same name (8)

Washington Other Counties (more counties)

County Name Population Title
King County 2,274,315 County in the state of Washington, United States
Pierce County 913,890 County in the state of Washington, United States
Snohomish County 830,393 County in the state of Washington, United States
Seattle 769,714 The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
Spokane County 528,225 County in the state of Washington, United States
Clark County 496,865 County in Washington, United States
Thurston County 294,074 County in the state of Washington, United States
Kitsap County 272,787 County in the state of Washington, United States
Yakima County 251,879 County in the state of Washington, United States
Whatcom County 231,016 County in the state of Washington, United States
Spokane 222,050 The second most populous city in Washington.
Tacoma 219,945 The third most populous city in Washington.
Benton County 206,426 County in Arkansas, United States
Vancouver 186,192 The third most populous city in Washington.
Bellevue 148,073 The most populous city in Washington.
Skagit County 130,789 County in the state of Washington, United States