ZIP code · West Richland · Washington · United States
ZIP code 99353 — West Richland
ZIP code 99353 serves West Richland, Washington.
- Postal code
- 99353Single source Value from one source, not cross-checked.
- City
- West Richland
- County
- Benton FIPS 53005
- State
- Washington
- Country
- United States
- Coordinates
- 46.3153, -119.3714 — precision precise (locality)
View on OpenStreetMap - Population
- 18,702 (ZCTA, ACS 5-year)
- Population density
- 725 / sq mi
- Land area
- 25.8 sq mi (66.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $120,396
- Per-capita income
- $45,188
- Median age
- 36.1
- Households
- 6,238
- Housing units
- 6,592
- Median home value
- $407,600
- Median gross rent
- $1,534 / month
- Congressional district
- WA-4 (119th Congress)
- USDA hardiness zone
- 7b (5 to 10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
- Area code
- 509 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 99353 with another ZIP · ZIPs within 25 miles · distance from 99353
Map of ZIP code 99353
Climate — monthly normals
Warmest month Jul (avg high 89°F), coldest Dec (avg low 28°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 41 | 48 | 57 | 65 | 74 | 80 | 89 | 88 | 79 | 64 | 49 | 40 |
| Avg low °F | 29 | 30 | 35 | 41 | 48 | 54 | 60 | 59 | 51 | 42 | 34 | 28 |
| Precip in | 1.0 | 0.7 | 0.6 | 0.6 | 0.6 | 0.6 | 0.2 | 0.1 | 0.3 | 0.5 | 0.9 | 1.1 |
NOAA 1991–2020 climate normals from the nearest station: RICHLAND (5.2 mi) · NOAA NCEI
Places in ZIP 99353
- 6 schools
- 2 hospitals & clinics
- 2 doctors & dentists
- 1 pharmacies
- 1 supermarkets
- 12 restaurants & cafés
- 1 bars & pubs
- 17 parks
- 25 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 9 places of worship
- 1 banks
- 4 gas stations
- 3 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page