What is the population of Mason County?

The population of Mason County, WA is 68,224.

Where is Mason County located?

Mason County, WA is located at latitude 47.3504800 and longitude -123.1830900. It is in United States.

What is the area of Mason County?

The area of Mason County, WA is 2722 km².

What is the elevation of Mason County?

Mason County, WA has an elevation of 147 meters (482 feet) above sea level.

What time zone is Mason County in?

Mason County, WA is in the America/Los_Angeles time zone.

How has the population of Mason County changed?

The population of Mason County, WA has increased from 60,699 (2010) to 68,224 (2020), a change of 12.4%.

Mason County, Washington

Mason County: county in the state of Washington, United States

About

Mason County is a county located in the U.S. state of Washington. As of the 2010 census, the population was 60,699 and a population density of 22 people per km². After 10 years in 2020 county had an estimated population of 68,224 inhabitants. Its county seat is Shelton. The county was created 172 years ago in 1854.

Mason County locator map — Location of Mason County on Washington map.

County Snapshot

Mason County at a glance

Mason County currently has 1 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Washington counties

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Largest city

Shelton

Population 10,955

Quick Facts about Mason County

Population	68,224 (2020)
Country	United States of America
State	Washington (United States)
Different from	Mason County, Mason County, Mason County, Mason County, Mason County
Area	2722 km²
Water as percent of area	8.7%
Land as percent of area	91.3%
Latitude & Longitude	47.3505,-123.1831
Named for	Charles H. Mason
Altitude	554 feet / 169 meters
Capital	Shelton
Establishment	March 13, 1854
Time Zone	America/Los_Angeles
Local time	04:56:21 (17th April 2026)
Density	25 Pop. per km² as of 2020
Population growth	11.03% (2010-2020)

Mason County Courthouse - Shelton Washington image

Geography

Mason County is located at 47°21'2"N 123°10'59"W (47.3504800, -123.1830900). It has 5 neighbors: Grays Harbor County, Jefferson County, Kitsap County, Pierce County and Thurston County.

Mason County map

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The largest city of Mason County is Shelton with a population of 10,955. . See all Mason County cities & populated places.

Mason County Populated Places

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

City Name	Population	Title
Shelton	10,955	County seat of Mason County, Washington, United States

Official website of Mason County

Official Website

Mason County has 5 neighbours.

Grays Harbor County county in the state of Washington, United States
Jefferson County county in the state of Washington, United States
Kitsap County county in the state of Washington, United States
Pierce County county in the state of Washington, United States
Thurston County county in the state of Washington, United States

Shelton

Demographics

The population of Mason County increased by 11.03% in 10 years.

Year	Population	% Change	Method
2010	60,699	-	census
2011	60,870	0.28%	estimation process
2012	60,681	-0.31%	estimation process
2013	60,474	-0.34%	estimation process
2014	60,604	0.21%	estimation process
2015	60,991	0.63%	estimation process
2016	62,142	1.85%	estimation process
2017	63,740	2.51%	estimation process
2018	65,380	2.51%	estimation process
2019	66,768	2.08%	estimation process
2020	68,224	2.13%	estimation process

Comitatul Mason, Comte de Mason, Comté de Mason, Condado de Mason, Condado han Mason, Contea di Mason, Hrabstwo Mason, Kantono Mason, Mason, Mason Kun, Mason Kūn, Mason konderria, Mason megye, Mejson, Mejsun, Okres Mason, Okrug Mejson, Quan Mason, Quận Mason, mei sen xian, meison jun, mesana ka'unti, mqatʿt maswn, shhrstan maswn washyngtn, Мейсон, Мейсън, Округ Мејсон, شهرستان ماسون، واشینگتن, مقاطعة ماسون, میسن کاؤنٹی، واشنگٹن, মেশন কাউন্টি, メイソン郡, 梅森县

Other places with the same name (5)

Mason County, Michigan county in Michigan, United States with a population of 29,164 people.
Mason County, West Virginia county in West Virginia, United States with a population of 26,335 people.
Mason County, Kentucky county in Kentucky, United States with a population of 17,035 people.
Mason County, Illinois county in Illinois, United States with a population of 13,173 people.
Mason County, Texas county in Texas, United States with a population of 4,344 people.

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