ZIP code · Chalkyitsik · Alaska · United States
ZIP code 99788 — Chalkyitsik
ZIP code 99788 serves Chalkyitsik, Alaska.
- Postal code
- 99788Single source Value from one source, not cross-checked.
- City
- Chalkyitsik
- County
- Yukon-Koyukuk (CA) FIPS 02290
- State
- Alaska
- Country
- United States
- Coordinates
- 66.6544, -143.7222 — precision estimated (postal-area centroid)
View on OpenStreetMap - Population
- 103 (ZCTA, ACS 5-year)
- Population density
- 12 / sq mi
- Land area
- 8.5 sq mi (22 km²) (ZCTA, ACS 5-year)
- Median household income
- $45,000
- Per-capita income
- $18,391
- Median age
- 29.9
- Households
- 38
- Housing units
- 67
- Median home value
- $32,500
- Congressional district
- AK At-large (119th Congress)
- USDA hardiness zone
- 1a (-60 to -55 °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 99788 with another ZIP · ZIPs within 25 miles · distance from 99788
Nearby localities
Map of ZIP code 99788
Places in ZIP 99788
- 1 schools
- 1 post offices
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 · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page