ZIP code · Wallula · Washington · United States
ZIP code 99363 — Wallula
ZIP code 99363 serves Wallula, Washington.
- Postal code
- 99363Single source Value from one source, not cross-checked.
- City
- Wallula
- County
- Walla Walla FIPS 53071
- State
- Washington
- Country
- United States
- Coordinates
- 46.0846, -118.9061 — precision precise (locality)
View on OpenStreetMap - Population
- 127 (ZCTA, ACS 5-year)
- Population density
- 4 / sq mi
- Land area
- 30.9 sq mi (80 km²) (ZCTA, ACS 5-year)
- Median household income
- $62,857
- Per-capita income
- $16,394
- Median age
- 7
- Households
- 40
- Housing units
- 66
- Median home value
- $207,100
- Congressional district
- WA-5 (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 99363 with another ZIP · ZIPs within 25 miles · distance from 99363
Map of ZIP code 99363
Climate — monthly normals
Warmest month Jul (avg high 89°F), coldest Jan (avg low 29°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 48 | 58 | 65 | 74 | 80 | 89 | 89 | 80 | 66 | 51 | 42 |
| Avg low °F | 29 | 30 | 35 | 41 | 48 | 54 | 61 | 59 | 51 | 42 | 35 | 29 |
| Precip in | 1.4 | 1.0 | 1.0 | 1.0 | 1.1 | 0.8 | 0.3 | 0.3 | 0.4 | 1.0 | 1.3 | 1.4 |
NOAA 1991–2020 climate normals from the nearest station: ICE HARBOR DAM (11.1 mi) · NOAA NCEI
Places in ZIP 99363
- 4 parks
- 1 playgrounds
- 1 post offices
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