Townapedia

Mattawa, Washington

Mattawa is a city of 3,616 people in Grant County, Washington, founded in 1909.

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Population3,616 -23.3% since 2019
Elevation768 ft 234 m
Founded1909
Land area1.1 sq mi
ZIP code99349
Nearest airportYakima Air Terminal (YKM) 32 mi

Why visit Mattawa

Townapedia lists 1 park or trail and 4 places to eat in and around town.

July is the warmest month, with average highs of 92°F; January lows average 30°F.

About Mattawa

Mattawa is an incorporated city in Grant County, Washington, United States. The population was 3,335 at the 2020 census.

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

Parks, trails and playgrounds1

Hund Memorial Park

Park

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Restaurants and cafes4

Tiddaly Diddalys

Restaurant · Pizza · 0.5 mi

23921, Mattawa

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El Valle

Restaurant · Mexican

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Wahluke Wine

Brewery and winery · 0.6 mi

23934 Road T.1 SW, Mattawa

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Subway

Fast food · Sandwich

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Churches and places of worship4

Kingdom Hall of Jehovah's Witnesses

Church · Jehovahs Witness · 0.5 mi

10 Government Road, Mattawa

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Roca De La Salvacion

Church · Catholic

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Saddle Mountain Bible Church

Place of worship · 0.4 mi

27250 Road Priest Rapids Drive, Mattawa

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Shopping2

Harvest Foods

Grocery

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Mattawa Market

Grocery

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History

The town of Mattawa was originally platted in 1909 by E. and Eva Campbell, but was not incorporated at that time. With the construction of nearby Priest Rapids Dam and Wanapum Dam, the town boomed with construction workers. Mattawa was officially incorporated on June 3, 1958. The Port of Mattawa was also established in 1958. Mattawa is also home to the first straw bale library in the United States. On December 3, 2009, the City of Mattawa became a non-charter code city.

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

Gas and EV charging2

Schools, colleges and libraries15

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Healthcare1

  • Columbia Basin Health Association

    Clinic and pharmacy · 0.4 mi

    611 Government Road, Mattawa

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Map of Mattawa

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

Climate by month

40°60°80°January: 1.1 in of rainFebruary: 0.6 in of rainMarch: 0.7 in of rainApril: 0.6 in of rainMay: 0.6 in of rainJune: 0.5 in of rainJuly: 0.2 in of rainAugust: 0.1 in of rainSeptember: 0.1 in of rainOctober: 0.7 in of rainNovember: 0.9 in of rainDecember: 1.4 in of rainJanuary: 41°FFebruary: 47°FMarch: 57°FApril: 65°FMay: 75°FJune: 82°FJuly: 92°FAugust: 90°FSeptember: 80°FOctober: 65°FNovember: 50°FDecember: 41°FJanuary: 30°FFebruary: 32°FMarch: 38°FApril: 45°FMay: 53°FJune: 60°FJuly: 66°FAugust: 66°FSeptember: 58°FOctober: 46°FNovember: 36°FDecember: 30°FJFMAMJJASOND
Average high Average low Rain
Monthly table
MonthHighLowRain
Jan41°F30°F1.1 in
Feb47°F32°F0.6 in
Mar57°F38°F0.7 in
Apr65°F45°F0.6 in
May75°F53°F0.6 in
Jun82°F60°F0.5 in
Jul92°F66°F0.2 in
Aug90°F66°F0.1 in
Sep80°F58°F0.1 in
Oct65°F46°F0.7 in
Nov50°F36°F0.9 in
Dec41°F30°F1.4 in

U.S. Climate Normals 1991-2020 for Priest Rapids Dam (6 mi away), NOAA NCEI.

People and cost of living

$38,388median household income
$1,128median monthly rent
21.7median age
0.2%of adults have a bachelor's degree or higher
25.0%of homes are owner-occupied
25.7 minaverage commute
Age of residents
Under 1837%18 to 3432%35 to 6428%65 and over3%

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

Disaster history

Grant County has had 9 federal disaster declarations since 2000, most often for fires.

  • 2023-07-11: Baird Springs Fire (Fire)
  • 2020-03-22: Covid-19 Pandemic (Biological)
  • 2020-03-13: Covid-19 (Biological)
  • 2018-08-12: Grass Valley Fire (Fire)
  • 2018-07-20: Buckshot Fire (Fire)
  • 2017-04-21: Severe Winter Storms, Flooding, Landslides, Mudslides (Flood)

OpenFEMA disaster declarations summaries.

Getting there and nearby towns

Yakima Air Terminal (YKM) is the nearest airport with scheduled flights listed in OpenStreetMap, 32 miles away.

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

Reviews, tips and questions

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Sources and licences

Photo credits

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