ZIP code · Willow · Alaska · United States
ZIP code 99688 — Willow
ZIP code 99688 serves Willow, Alaska.
- Postal code
- 99688Single source Value from one source, not cross-checked.
- City
- Willow
- County
- Matanuska-Susitna Borough FIPS 02170
- State
- Alaska
- Country
- United States
- Coordinates
- 61.8966, -150.0038 — precision estimated (postal-area centroid)
View on OpenStreetMap - Population
- 2,542 (ZCTA, ACS 5-year)
- Population density
- 2 / sq mi
- Land area
- 1,677.3 sq mi (4,344.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $67,907
- Per-capita income
- $38,720
- Median age
- 47.3
- Households
- 1,166
- Housing units
- 3,245
- Median home value
- $266,700
- Median gross rent
- $1,331 / month
- Congressional district
- AK At-large (119th Congress)
- USDA hardiness zone
- 3b (-35 to -30 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Anchorage (UTC−9 / UTC−8 DST)
- Area code
- 907Telephone 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 99688 with another ZIP · ZIPs within 25 miles · distance from 99688
Nearby localities
Map of ZIP code 99688
Climate — monthly normals
Warmest month Jul (avg high 68°F), coldest Jan (avg low -4°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 15 | 25 | 34 | 46 | 58 | 67 | 68 | 65 | 56 | 41 | 24 | 18 |
| Avg low °F | -4 | 2 | 7 | 25 | 37 | 47 | 52 | 49 | 39 | 24 | 7 | 0 |
NOAA 1991–2020 climate normals from the nearest station: WILLOW WEST (10.4 mi) · NOAA NCEI
Places in ZIP 99688
- 1 schools
- 1 restaurants & cafés
- 3 parks
- 1 libraries
- 1 post offices
- 1 places of worship
- 1 banks
- 2 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