ZIP code · Wasilla · Alaska · United States
ZIP code 99623 — Wasilla
ZIP code 99623 serves Wasilla, Alaska.
- Postal code
- 99623Single source Value from one source, not cross-checked.
- City
- Wasilla
- County
- Matanuska-Susitna Borough FIPS 02170
- State
- Alaska
- Country
- United States
- Coordinates
- 61.5463, -149.5901 — precision estimated (postal-area centroid)
View on OpenStreetMap - Population
- 22,786 (ZCTA, ACS 5-year)
- Population density
- 88 / sq mi
- Land area
- 258.5 sq mi (669.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $87,606
- Per-capita income
- $37,283
- Median age
- 35.4
- Households
- 7,715
- Housing units
- 9,084
- Median home value
- $294,800
- Median gross rent
- $1,558 / month
- Congressional district
- AK At-large (119th Congress)
- USDA hardiness zone
- 4b (-25 to -20 °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 99623 with another ZIP · ZIPs within 25 miles · distance from 99623
Nearby localities
Map of ZIP code 99623
Climate — monthly normals
Warmest month Jul (avg high 67°F), coldest Jan (avg low 11°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 29 | 34 | 47 | 58 | 64 | 67 | 64 | 55 | 42 | 30 | 25 |
| Avg low °F | 11 | 14 | 19 | 29 | 37 | 45 | 50 | 47 | 40 | 29 | 17 | 14 |
| Precip in | 0.7 | 0.9 | 0.6 | 0.4 | 1.1 | 1.8 | 2.6 | 3.4 | 2.9 | 1.8 | 1.1 | 1.5 |
NOAA 1991–2020 climate normals from the nearest station: ANDERSON LAKE (9.8 mi) · NOAA NCEI
Places in ZIP 99623
- 5 schools
- 1 hospitals & clinics
- 2 supermarkets
- 9 restaurants & cafés
- 1 bars & pubs
- 1 parks
- 8 playgrounds
- 1 post offices
- 2 places of worship
- 1 banks
- 9 gas stations
- 1 EV charging stations
- 4 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