Postal reference / United States
99623Wasilla, Alaska
ZIP code 99623 is a United States postal code for Wasilla, Alaska. Its county association is Matanuska-Susitna Borough County. The map reference point is at 61.5463, -149.5901.
- State / territory
- Alaska
- Recorded place name
- Wasilla
- County association
- Matanuska-Susitna Borough
- Estimated coordinate
- 61.5463, -149.5901
View on OpenStreetMap - ZIP prefix
- 996 · 89 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 258.477 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.
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Browse the other 272 ZIP codes recorded for Alaska, sorted by code with place and county.
Alaska directoryOther ZIP codes in Wasilla, AK
Wasilla has 4 ZIP codes in the reference dataset.
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 99687 | Wasilla | AK | Matanuska-Susitna Borough | 3.8 |
| 99629 | Wasilla | AK | Matanuska-Susitna Borough | 5.5 |
| 99654 | Wasilla | AK | Matanuska-Susitna Borough | 7.1 |
| 99694 | Houston | AK | Matanuska-Susitna Borough | 9.5 |
| 99567 | Chugiak | AK | Anchorage Municipality | 10.4 |
| 99652 | Big Lake | AK | Matanuska-Susitna Borough | 12.1 |
| 99577 | Eagle River | AK | Anchorage Municipality | 16.5 |
| 99504 | Anchorage | AK | Anchorage Municipality | 24.2 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.
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