ZIP code · Littlerock · Washington · United States
ZIP code 98556 — Littlerock
ZIP code 98556 serves Littlerock, Washington.
- Postal code
- 98556Single source Value from one source, not cross-checked.
- City
- Littlerock
- County
- Thurston FIPS 53067
- State
- Washington
- Country
- United States
- Coordinates
- 46.9024, -123.0170 — precision precise (locality)
View on OpenStreetMap - Population
- 402 (ZCTA, ACS 5-year)
- Population density
- 3,359 / sq mi
- Land area
- 0.1 sq mi (0.3 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $18,569
- Median age
- 35.7
- Households
- 0
- Housing units
- 0
- Congressional district
- WA-10 (119th Congress)
- USDA hardiness zone
- 8a (10 to 15 °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)
Tools: compare 98556 with another ZIP · ZIPs within 25 miles · distance from 98556
Map of ZIP code 98556
Climate — monthly normals
Warmest month Aug (avg high 78°F), coldest Feb (avg low 32°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 46 | 49 | 54 | 59 | 66 | 71 | 78 | 78 | 72 | 60 | 51 | 45 |
| Avg low °F | 33 | 32 | 35 | 38 | 43 | 47 | 51 | 51 | 46 | 41 | 36 | 33 |
| Precip in | 7.8 | 5.1 | 5.7 | 3.7 | 2.3 | 1.5 | 0.5 | 1.0 | 2.0 | 5.1 | 8.2 | 7.8 |
NOAA 1991–2020 climate normals from the nearest station: OLYMPIA AP (7.3 mi) · NOAA NCEI
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