Townapedia
MS Sierra 1 - Aberdeen Washington
MS Sierra 1 - Aberdeen Washington · David M. Hansen, Public domain
Aberdeen, WA - Building at Heron St & S. K St 02
Aberdeen, WA - Building at Heron St & S. K St 02 · Joe Mabel, CC BY-SA 3.0
Aberdeen, WA — Young Street Bridge, 2016
Aberdeen, WA — Young Street Bridge, 2016 · Steven Pavlov, CC BY-SA 4.0
Chevy II Nova (2697513132)
Chevy II Nova (2697513132) · JOHN LLOYD from Concrete, Washington, United States, CC BY 2.0
Cooney Mansion NRHP 83003324 Grays Harbor County, WA
Cooney Mansion NRHP 83003324 Grays Harbor County, WA · Jon Roanhaus, CC BY-SA 3.0

Cosmopolis, Washington

Cosmopolis is a city of 2,202 people in Grays Harbor County, Washington.

Loading the weather...
Population2,202 +36.8% since 2019
Elevation26 ft 8 m
Land area1.4 sq mi
ZIP codes98520, 98537, 98563
Nearest airportBowerman Airport (HQM) 8 mi

Why visit Cosmopolis

Townapedia lists 4 museums and landmarks, 9 parks and trails, 4 places to eat, 1 place to stay and 2 attractions in and around town.

Highlights include Young Street Bridge, Hotel Morck, Sierra and Kurt Cobain Memorial Park.

August is the warmest month, with average highs of 69°F; December lows average 36°F.

About Cosmopolis

Cosmopolis is a city in Grays Harbor County, Washington, United States. The population was 1,638 at the 2020 census. It lies on the Chehalis River and U.S. Route 101, immediately southeast of Aberdeen. Cosmopolis historically had an economy that centered around its pulp mill, which closed in 2006.

From the Wikipedia article Cosmopolis, Washington (this version), under CC BY-SA 4.0.

Things to do2

Young Street Bridge

Bridge · 2.6 mi

Bridge in United States of America

Open in Google Maps · Wikipedia

Bishop Center for Performing Arts

Cinema and theater · 1.5 mi

1600

Open in Google Maps

Museums and landmarks4

Hotel Morck

Monument and historic site · National Register of Historic Places · 2.5 mi

Historic building in Aberdeen, Washington, US

Open in Google Maps · Wikipedia

Sierra

Monument and historic site · National Register of Historic Places · 1.9 mi

Motor ship

Open in Google Maps · Wikipedia

Opal Art Glass

Museum

1232 1st Street, Cosmopolis

Open in Google Maps

Cosmopolis Treaty Grounds

Monument and historic site

Open in Google Maps

Parks, trails and playgrounds9

Kurt Cobain Memorial Park

Park · 2.6 mi

Memorial to Kurt Cobain in his hometown of Aberdeen, Washington

Open in Google Maps · Wikipedia

Highland Golf Course

Golf course · 0.6 mi

2200 1st Street, Cosmopolis

Open in Google Maps

Basich Trailway

Park · 0.7 mi

Open in Google Maps

DeWitt Park

Park · 0.4 mi

Open in Google Maps

Highland Park

Park · 0.6 mi

Open in Google Maps

Joe G. Batinovich Picnic Ground

Park · 1.2 mi

Open in Google Maps

Makarenko Park

Park · 0.6 mi

Open in Google Maps

Mill Creek Park

Park

Open in Google Maps

Pioneer Park

Park · 1.2 mi

Open in Google Maps

Advertisement

Restaurants and cafes4

Espresso & More

Cafe · Coffee Shop · 1.5 mi

619 South Boone Street

Open in Google Maps

El Maya

Restaurant · Mexican · 0.9 mi

Open in Google Maps

Brass Hub Coffeehouse

Cafe

Open in Google Maps

Maxi Teriyaki

Restaurant

Open in Google Maps

History

The area around the mouth of the Chehalis River is the ancestral home of indigenous Coast Salish peoples who are today referred to as the Lower Chehalis. The first white settler in the area, James Pilkington, staked a Donation Land Act claim to 155.5 acres (62.9 ha) on the south bank of the river in 1852. The site was later used for unsuccessful negotiations between indigenous representatives and the Washington territorial government for the 1855 Chehalis River Treaty. Pilkington built a cabin on the land, but later sold the property in 1853 to Kentucky-born emigrants David F. Byles and Austin E. Young. Byles and Young proposed a plat for a town named Cosmopolis on the south bank of the Chehalis River. The origin of the name is unclear; one account is that it came from an indigenous chief's name, and another claims that an earlier settler asked for a name that means "city of the whole world".

From the History section of Cosmopolis, Washington on Wikipedia, under CC BY-SA 4.0.

Where to stay1

Churches and places of worship1

Advertisement

Gas and EV charging2

Schools, colleges and libraries19

Map of Cosmopolis

42 places. The map loads OpenStreetMap tiles when you open it.

Climate by month

40°60°January: 13.9 in of rainFebruary: 8.6 in of rainMarch: 9.8 in of rainApril: 6.3 in of rainMay: 3.5 in of rainJune: 2.4 in of rainJuly: 0.9 in of rainAugust: 1.5 in of rainSeptember: 2.7 in of rainOctober: 8.3 in of rainNovember: 13.7 in of rainDecember: 13.4 in of rainJanuary: 48°FFebruary: 50°FMarch: 53°FApril: 57°FMay: 61°FJune: 65°FJuly: 68°FAugust: 69°FSeptember: 69°FOctober: 61°FNovember: 52°FDecember: 47°FJanuary: 37°FFebruary: 37°FMarch: 38°FApril: 41°FMay: 47°FJune: 51°FJuly: 54°FAugust: 54°FSeptember: 51°FOctober: 45°FNovember: 40°FDecember: 36°FJFMAMJJASOND
Average high Average low Rain
Monthly table
MonthHighLowRainSnow
Jan48°F37°F13.9 in0.0 in
Feb50°F37°F8.6 in0.1 in
Mar53°F38°F9.8 in0.2 in
Apr57°F41°F6.3 in0.0 in
May61°F47°F3.5 in0.0 in
Jun65°F51°F2.4 in0.0 in
Jul68°F54°F0.9 in0.0 in
Aug69°F54°F1.5 in0.0 in
Sep69°F51°F2.7 in0.0 in
Oct61°F45°F8.3 in0.0 in
Nov52°F40°F13.7 in0.2 in
Dec47°F36°F13.4 in0.0 in

U.S. Climate Normals 1991-2020 for Aberdeen Hcn (3 mi away), NOAA NCEI.

People and cost of living

$84,853median household income
$317,000median home value
39.2median age
26.6%of adults have a bachelor's degree or higher
82.7%of homes are owner-occupied
28.0 minaverage commute
Age of residents
Under 1829%18 to 3416%35 to 6440%65 and over16%

American Community Survey 5-year estimates, 2020-2024, U.S. Census Bureau. Estimates have margins of error, larger for small towns.

Disaster history

Grays Harbor County has had 21 federal disaster declarations since 2000, most often for severe storms.

  • 2026-04-07: Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Flood)
  • 2025-12-12: Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Flood)
  • 2024-04-28: Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Severe Storm)
  • 2022-03-29: Severe Winter Storms, Snowstorms, Straight-Line Winds, Flooding (Flood)
  • 2021-04-08: Severe Winter Storm, Straight-Line Winds, Flooding, Landslides, And Mudslides (Severe Storm)
  • 2020-04-23: Severe Storms, Flooding, Landslides, And Mudslides (Flood)

OpenFEMA disaster declarations summaries.

Getting there and nearby towns

Bowerman Airport (HQM) is the nearest airport with scheduled flights listed in OpenStreetMap, 8 miles away.

  • Aberdeen 2 mi northwest, about 4 min by car
  • Central Park 3 mi east, about 6 min by car
  • Shelton 36 mi northeast, about 58 min by car
  • Tumwater 40 mi east, about 1 h by car
  • Centralia 41 mi east, about 1 h by car
  • Olympia 42 mi east, about 1 h by car
  • Lacey 47 mi east, about 1 h 15 min by car
  • Yelm 53 mi east, about 1 h 30 min by car
  • Astoria 53 mi south, about 1 h 30 min by car
  • Warrenton 54 mi south, about 1 h 30 min by car

Drive times are estimates from straight-line distance, not routes.

Reviews, tips and questions

Loading what members have shared...

Sources and licences

Photo credits

Page built October 30, 2026. Spotted a mistake? Tell us or suggest a place.