ZIP code · Fairfield · Washington · United States
ZIP code 99012 — Fairfield
ZIP code 99012 serves Fairfield, Washington.
- Postal code
- 99012Single source Value from one source, not cross-checked.
- City
- Fairfield
- County
- Spokane FIPS 53063
- State
- Washington
- Country
- United States
- Coordinates
- 47.3987, -117.1921 — precision precise (locality)
View on OpenStreetMap - Population
- 1,125 (ZCTA, ACS 5-year)
- Population density
- 12 / sq mi
- Land area
- 93.6 sq mi (242.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $66,389
- Per-capita income
- $28,198
- Median age
- 37.1
- Households
- 326
- Housing units
- 369
- Median home value
- $288,600
- Median gross rent
- $1,039 / 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 (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.
Tools: compare 99012 with another ZIP · ZIPs within 25 miles · distance from 99012
Map of ZIP code 99012
Climate — monthly normals
Warmest month Aug (avg high 83°F), coldest Dec (avg low 23°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 37 | 40 | 47 | 55 | 65 | 70 | 81 | 83 | 73 | 57 | 43 | 35 |
| Avg low °F | 24 | 25 | 29 | 34 | 41 | 45 | 52 | 51 | 44 | 36 | 30 | 23 |
| Precip in | 3.8 | 2.6 | 3.6 | 2.3 | 2.5 | 1.9 | 0.7 | 0.7 | 1.0 | 2.5 | 3.5 | 3.4 |
NOAA 1991–2020 climate normals from the nearest station: PLUMMER 3 WSW (12.7 mi) · NOAA NCEI
Places in ZIP 99012
- 1 schools
- 1 pharmacies
- 1 restaurants & cafés
- 4 parks
- 1 playgrounds
- 1 libraries
- 1 post offices
- 6 places of worship
- 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