ZIP code · Danville · Washington · United States

ZIP code 99121 — Danville

ZIP code 99121 serves Danville, Washington.

Postal code
99121
Single source Value from one source, not cross-checked.
City
Danville
County
Ferry FIPS 53019
State
Washington
Country
United States
Coordinates
48.9725, -118.4884 — precision precise (locality)
View on OpenStreetMap
Population
325 (ZCTA, ACS 5-year)
Population density
6 / sq mi
Land area
52.8 sq mi (136.9 km²) (ZCTA, ACS 5-year)
Median household income
$80,833
Per-capita income
$36,480
Median age
52.4
Households
112
Housing units
140
Median home value
$420,800
Congressional district
WA-5 (119th Congress)
USDA hardiness zone
6b (-5 to 0 °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 Jul (avg high 84°F), coldest Dec (avg low 16°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F313849586874848474574030
Avg low °F161824293742474538292316
Precip in1.61.31.51.42.12.21.20.60.91.31.92.2

NOAA 1991–2020 climate normals from the nearest station: REPUBLIC (25.2 mi) · NOAA NCEI

Places in ZIP 99121

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