ZIP code · Hamilton · Washington · United States
ZIP code 98255 — Hamilton
ZIP code 98255 serves Hamilton, Washington.
- Postal code
- 98255Single source Value from one source, not cross-checked.
- City
- Hamilton
- County
- Skagit FIPS 53057
- State
- Washington
- Country
- United States
- Coordinates
- 48.5255, -121.9887 — precision precise (locality)
View on OpenStreetMap - Population
- 201 (ZCTA, ACS 5-year)
- Population density
- 303 / sq mi
- Land area
- 0.7 sq mi (1.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $35,893
- Per-capita income
- $27,560
- Median age
- 38
- Households
- 99
- Housing units
- 99
- Median home value
- $206,000
- Congressional district
- WA-2 (119th Congress)
- USDA hardiness zone
- 8b (15 to 20 °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 98255 with another ZIP · ZIPs within 25 miles · distance from 98255
Map of ZIP code 98255
Climate — monthly normals
Warmest month Aug (avg high 77°F), coldest Jan (avg low 33°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 43 | 47 | 52 | 58 | 65 | 69 | 76 | 77 | 71 | 59 | 49 | 42 |
| Avg low °F | 33 | 34 | 36 | 40 | 45 | 50 | 53 | 54 | 50 | 44 | 38 | 34 |
| Precip in | 10.4 | 6.7 | 7.6 | 5.1 | 3.5 | 2.7 | 1.2 | 1.5 | 3.3 | 7.3 | 11.5 | 10.4 |
NOAA 1991–2020 climate normals from the nearest station: CONCRETE PPL FISH STN (11.3 mi) · NOAA NCEI
Places in ZIP 98255
- 1 restaurants & cafés
- 1 bars & pubs
- 1 parks
- 1 post offices
- 1 gas stations
- 1 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