Postal reference / United States
99688Willow, Alaska
ZIP code 99688 is a United States postal code for Willow, Alaska. Its county association is Matanuska-Susitna Borough County. The map reference point is at 61.8966, -150.0038.
- State / territory
- Alaska
- Recorded place name
- Willow
- County association
- Matanuska-Susitna Borough
- Estimated coordinate
- 61.8966, -150.0038
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
- 1,677.297 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 directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 99694 | Houston | AK | Matanuska-Susitna Borough | 19.4 |
| 99676 | Talkeetna | AK | Matanuska-Susitna Borough | 25.4 |
| 99652 | Big Lake | AK | Matanuska-Susitna Borough | 26.0 |
| 99623 | Wasilla | AK | Matanuska-Susitna Borough | 27.7 |
| 99683 | Trapper Creek | AK | Matanuska-Susitna Borough | 29.9 |
| 99577 | Eagle River | AK | Anchorage Municipality | 43.6 |
| 99509 | Anchorage | AK | Anchorage Municipality | 47.0 |
| 99514 | Anchorage | AK | Anchorage Municipality | 47.0 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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