ZIP code · Nikolai · Alaska · United States
ZIP code 99691 — Nikolai
ZIP code 99691 serves Nikolai, Alaska.
- Postal code
- 99691Single source Value from one source, not cross-checked.
- City
- Nikolai
- County
- Yukon-Koyukuk (CA) FIPS 02290
- State
- Alaska
- Country
- United States
- Coordinates
- 63.0133, -154.3750 — precision estimated (postal-area centroid)
View on OpenStreetMap - Population
- 93 (ZCTA, ACS 5-year)
- Population density
- 0 / sq mi
- Land area
- 4,624.7 sq mi (11,978 km²) (ZCTA, ACS 5-year)
- Median household income
- $35,313
- Per-capita income
- $32,116
- Median age
- 52.2
- Households
- 59
- Housing units
- 113
- Median home value
- $105,000
- Congressional district
- AK At-large (119th Congress)
- USDA hardiness zone
- 2b (-45 to -40 °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 99691 with another ZIP · ZIPs within 25 miles · distance from 99691
Nearby localities
Map of ZIP code 99691
Climate — monthly normals
Warmest month Jul (avg high 70°F), coldest Jan (avg low -12°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 9 | 21 | 28 | 45 | 59 | 68 | 70 | 65 | 56 | 38 | 20 | 13 |
| Avg low °F | -12 | -3 | 0 | 22 | 34 | 43 | 48 | 45 | 35 | 19 | 0 | -7 |
NOAA 1991–2020 climate normals from the nearest station: FAREWELL LAKE (40.3 mi) · NOAA NCEI
Places in ZIP 99691
- 1 libraries
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