Mattawa city, Washington
Official LSAD Designation: Mattawa city • Census GEOID: 5344165
• Grant County
Mattawa city is an incorporated city in Grant County, Washington. According to official records from the Census (2025), Mattawa city had an estimated population of 3,874 residents. Official Census Bureau geographic records classify this community under LSAD designation Mattawa city (GEOID 5344165).
Local Government Administration U.S. Census Bureau GMAF
City Of Mattawa
Municipal
Official Title:
Mayor
Address:
PO BOX 965, MATTAWA WA 99349-0954
County Of Grant
County
Official Title:
Clerk Of The Board, Administrative A
Address:
PO BOX 37, EPHRATA WA 98823-0037
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 3,874 | 2025 |
| Median Household Income | $38,388 | 2020-2024 |
| Median Home Value | Data unavailable | ACS 5-Year |
| Land Area | 1.06 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).