ZIP code · Saint George Island · Alaska · United States
ZIP code 99591 — Saint George Island
ZIP code 99591 serves Saint George Island, Alaska.
- Postal code
- 99591Single source Value from one source, not cross-checked.
- County
- Aleutians West (CA) FIPS 02016
- State
- Alaska
- Country
- United States
- Coordinates
- 56.5944, -169.6186 — precision estimated (postal-area centroid)
View on OpenStreetMap - Population
- 59 (ZCTA, ACS 5-year)
- Population density
- 2 / sq mi
- Land area
- 34.8 sq mi (90.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $108,750
- Per-capita income
- $17,541
- Median age
- 34.5
- Households
- 10
- Housing units
- 29
- Median home value
- $85,000
- Congressional district
- AK At-large (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- 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 99591 with another ZIP · ZIPs within 25 miles · distance from 99591
Nearby localities
Map of ZIP code 99591
Climate — monthly normals
Warmest month Aug (avg high 52°F), coldest Jan (avg low 23°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 32 | 31 | 35 | 42 | 47 | 51 | 52 | 50 | 43 | 38 | 34 |
| Avg low °F | 23 | 24 | 23 | 28 | 34 | 39 | 44 | 46 | 42 | 36 | 30 | 26 |
| Precip in | 1.2 | 1.1 | 0.8 | 0.9 | 1.0 | 1.3 | 2.0 | 2.7 | 2.5 | 3.0 | 2.3 | 1.8 |
NOAA 1991–2020 climate normals from the nearest station: ST GEORGE ISLAND AP (2.1 mi) · NOAA NCEI
Places in ZIP 99591
- 1 hospitals & clinics
- 2 supermarkets
- 1 places of worship
- 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