Cost of living in Mattawa, Washington

Mattawa, Washington has about 3,616 people. That count is a 2020–2024 Census average, not a headcount from one day.

The Census Bureau did not publish a typical home value here.

HUD's fair-market rent for a 2-bedroom in Grant County is $1,361 a month. That is the county number, not an apartment listing in Mattawa. It runs from October 2026 through September 2027.

Washington's prices sit at 107.0 when the U.S. average is 100. This place is not in a metro area with its own index, so this is the state number from BEA for 2024.

Washington does not tax wages. A typical combined sales tax is 9.5% as of January 1, 2026. That mix is statewide, not Mattawa's exact store tax.

In July 2026, a typical Washington home paid 14.71¢ per kilowatt-hour. That is a state average from EIA, not Mattawa's bill.

In 2025, all-grades gas in Washington averaged $4.23 a gallon. EIA prints this yearly price for only some states.

Among 355 places we list in Washington with a rent figure, 285 have higher typical rent than Mattawa.