ZIP code · Cantwell · Alaska · United States

ZIP code 99729 — Cantwell

ZIP code 99729 serves Cantwell, Alaska.

Postal code
99729
Single source Value from one source, not cross-checked.
City
Cantwell
County
Denali FIPS 02068
State
Alaska
Country
United States
Coordinates
63.3955, -148.8973 — precision estimated (postal-area centroid)
View on OpenStreetMap
Population
121 (ZCTA, ACS 5-year)
Population density
0 / sq mi
Land area
2,947.7 sq mi (7,634.6 km²) (ZCTA, ACS 5-year)
Median household income
$41,000
Per-capita income
$33,023
Median age
64.5
Households
80
Housing units
233
Median home value
$221,400
Median gross rent
$900 / month
Congressional district
AK At-large (119th Congress)
USDA hardiness zone
4a (-30 to -25 °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
907
Telephone 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.

Nearby localities

Climate — monthly normals

Warmest month Jul (avg high 66°F), coldest Jan (avg low -9°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F101925405465666150341813
Avg low °F-9-4-2162939454131170-6
Precip in0.90.90.70.50.81.62.93.32.51.20.90.7

NOAA 1991–2020 climate normals from the nearest station: CANTWELL 2 E (0.1 mi) · NOAA NCEI

Places in ZIP 99729

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