Mason County, Washington

Mason County, Washington, has 71,165 residents (July 2025 estimate). Its county seat is Shelton. It uses Pacific Time and covers 960 sq mi (2,485 km²) of land.

SeattleSpokaneTacoma
Mason County in Washington
Grays Harbor CountySheltonBelfairAllynGrapeviewSkokomish
Mason County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
71,165
Land area
960 sq mi (2,485 km²)
County seat or government
Shelton
Time zone
Pacific TimeUTC-08:00 in January; UTC-07:00 in July
Median household income
$83,270 ± $4,720
Median home value
$411,800 ± $13,841
Median rent, with utilities
$1,285 ± $99
Homes lived in by their owners
82.3% ± 2.0 points
County type
County
Metro or micro area
Shelton, WA micro areaCentral county
Water area
91.5 sq mi (237 km²)
State
Washington
County code (FIPS)
53045
Coordinates (central point)
47.350832, -123.173103

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Mason County

Time zoneLocal time and UTC offsetNext clock change
Pacific TimeAmerica/Los_AngelesUTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 9858440,606 people
  2. 9831236,307 people
  3. 9850235,398 people
  4. 9852811,940 people
  5. 9854110,810 people
  6. 985637,604 people
  7. 983805,471 people
  8. 985244,300 people
  9. 985574,079 people
  10. 985462,430 people
  11. 985482,177 people
  12. 985882,114 people
All 15
  1. 985922,059 people
  2. 98555324 people
  3. 98560114 people

15 ZIP Code areas overlap Mason County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Mason County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Mason County, largest first

  1. Shelton School District24,694 people
  2. North Mason School District17,983 people
  3. Pioneer School District12,558 people
  4. Elma School District8,745 people
  5. Hood Canal School District5,886 people
  6. McCleary School District3,890 people
  7. Grapeview School District2,559 people
  8. Mary M. Knight School District2,366 people
  9. Southside School District2,197 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Mason County, largest first

  1. Skokomish Reservation and Off-Reservation Trust Land691 people
  2. Squaxin Island Reservation and Off-Reservation Trust Land388 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Shelton, Washington (city)10,612 people
  2. Belfair, Washington (CDP)4,557 people
  3. Allyn, Washington (CDP)2,404 people
  4. Grapeview, Washington (CDP)1,088 people
  5. Skokomish, Washington (CDP)560 people
  6. Union, Washington (CDP)457 people
  7. Hoodsport, Washington (CDP)216 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Kitsap County, Washington32 mi northeast
  2. Thurston County, Washington33 mi southeast
  3. Grays Harbor County, Washington35 mi southwest
  4. Jefferson County, Washington35 mi northwest
  5. Pierce County, Washington52 mi southeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.