ZIP code · Spangle · Washington · United States

ZIP code 99031 — Spangle

ZIP code 99031 serves Spangle, Washington.

Postal code
99031
Single source Value from one source, not cross-checked.
City
Spangle
County
Spokane FIPS 53063
State
Washington
Country
United States
Coordinates
47.4338, -117.3827 — precision precise (locality)
View on OpenStreetMap
Population
1,434 (ZCTA, ACS 5-year)
Population density
19 / sq mi
Land area
76.5 sq mi (198 km²) (ZCTA, ACS 5-year)
Median household income
$95,089
Per-capita income
$39,494
Median age
49.2
Households
500
Housing units
510
Median home value
$330,100
Median gross rent
$688 / month
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
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 21°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F364049576773848474594335
Avg low °F222227323842454335292521
Precip in2.21.72.11.51.71.30.30.30.51.62.42.6

NOAA 1991–2020 climate normals from the nearest station: SPOKANE 17 SSW (6.8 mi) · NOAA NCEI

Places in ZIP 99031

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