Home > AK > Yukon-Koyukuk County > Chalkyitsik > Zip 99788

Zip Code 99788 — Chalkyitsik, AK

99788 is a ZIP Code associated with Chalkyitsik, AK, located within Yukon-Koyukuk. The postal region supports an estimated population of 80 residents across Data Pending housing units, with a population density of 3.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (66.646290, -143.781370)

Data Metric	Local Statistic
Postal / Zip Code	99788
Primary City	Chalkyitsik
State / Province	AK
County	Yukon-Koyukuk
Total Population	80
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	3.6 people/sq mi
Timezone	America/Anchorage

How 99788 Compares

Metric	ZIP 99788	Yukon-Koyukuk County	AK State Average
Population	80	22,948	735,134
Median Income	Data Pending	N/A	N/A
Population Density	3.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 99733	Circle	60.0 mi	54	N/A
Zip 99740	Fort Yukon	73.5 mi	656	N/A
Zip 99781	Venetie	75.7 mi	76	N/A
Zip 99730	Central	83.0 mi	108	N/A
Zip 99724	Beaver	90.6 mi	17	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →