ZIP code · Underwood · Washington · United States

ZIP code 98651 — Underwood

ZIP code 98651 serves Underwood, Washington.

Postal code
98651
Single source Value from one source, not cross-checked.
City
Underwood
County
Skamania FIPS 53059
State
Washington
Country
United States
Coordinates
45.7409, -121.5974 — precision precise (locality)
View on OpenStreetMap
Population
935 (ZCTA, ACS 5-year)
Population density
70 / sq mi
Land area
13.3 sq mi (34.4 km²) (ZCTA, ACS 5-year)
Median household income
$87,419
Per-capita income
$61,427
Median age
55.5
Households
420
Housing units
445
Median home value
$571,000
Median gross rent
$1,089 / month
Congressional district
WA-3 (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)
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.

Climate — monthly normals

Warmest month Aug (avg high 82°F), coldest Jan (avg low 30°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F414653606874828276634940
Avg low °F303135394651565547393431
Precip in5.23.53.21.81.30.80.20.20.72.64.85.9

NOAA 1991–2020 climate normals from the nearest station: HOOD RVR EXP STN (5.5 mi) · NOAA NCEI

Places in ZIP 98651

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