County ZIP codes · Alaska · FIPS 02170
Matanuska-Susitna Borough, AK ZIP Codes
Matanuska-Susitna Borough, Alaska has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 12 residential and 2 for PO boxes or a single organization. 11 of the residential ones lie mainly in Matanuska-Susitna Borough and 1 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $63,688 in 99674 (Sutton) to $100,455 in 99645 (Palmer) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Matanuska-Susitna Borough?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $74,531 and $88,799.
They carry 11 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 12 residential ZIP codes in Matanuska-Susitna Borough
11 ZIP codes lie mainly in Matanuska-Susitna Borough; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 99654 | Wasilla | 44,647 | 393 | $98k | $363k | 100% |
| 99645 | Palmer | 32,103 | 55 | $101k | $367k | 100% |
| 99623 | Wasilla | 23,424 | 91 | $89k | $326k | 100% |
| 99652 | Big Lake | 4,313 | 35 | $79k | $295k | 100% |
| 99688 | Willow | 2,739 | 2 | $77k | $297k | 100% |
| 99674 | Sutton | 1,774 | 1 | $64k | $234k | 100% |
| 99676 | Talkeetna | 1,628 | 1 | $54k | $271k | 100% |
| 99694 | Houston | 1,516 | 56 | $75k | $290k | 100% |
| 99683 | Trapper Creek | 583 | 0 | $73k | $218k | 100% |
| 99667 | Skwentna | 261 | 0 | $64k | $188k | 100% |
| 99729 | Cantwell | 128 | 0 | $43k | $256k | 89% |
Partly in Matanuska-Susitna Borough
| In this county | ||||||
|---|---|---|---|---|---|---|
| 99588 | Glennallen | 1,037 | 0 | $110k | $291k | 44% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
2 ZIP codes of Matanuska-Susitna Borough extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Matanuska-Susitna | Elsewhere |
|---|---|---|
| 99588 | 44% | Copper River Census Area 56% |
| 99729 | 89% | Denali Borough 11% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Matanuska-Susitna Borough's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Matanuska-Susitna Borough's ZIP codes use 3 prefixes: 995, 996 and 997.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 995 | Anchorage, AK (SCF 995) | 1 | 69 |
| 996 | Anchorage, AK (SCF 995) | 12 | 89 |
| 997 | Anchorage, AK (SCF 995) | 1 | 82 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.