Unalaska, AK

Full City Profile · Alaska

3.2 /5.0
B Good
4,430 Population 43/sq mi density
$114,286 Median Income $53,093 per capita
$448,700 Home Value $435,931 Zillow
$2,040 Median Rent 21.8% income on rent
42°F Avg Temperature
143 Violent Crime/100K 95 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$114,286 median income, 4.3% unemployment
A
Affordability
4.5 / 5.0
$448,700 home value, $2,040/mo rent
F
Safety
1.0 / 5.0
143 violent crimes/100K
C
Education
2.5 / 5.0
18.3% bachelor's degree or higher
Unalaska has a cool climate with an average annual temperature of 42°F (6°C). Winters average 33°F in January while summers reach 52°F in July. Annual precipitation totals 60.1 inches. The area receives 81.6 inches of snow annually.

Temperature

33°F Jan (1°C) 52°F Jul (11°C)
Annual Average41.6°F
23% below US avg
January Average33°F (1°C)
July Average52°F (11°C)

Geography

Elevation1,062 ft (324 m)
Area212.7 sq mi (550.8 km²)
Population Density43/sq mi
Coordinates53.9103°N, 166.5290°W
TimezoneAmerica/Anchorage
Nearest AirportTed Stevens Anchorage International (ANC)
788 miles away

Precipitation & Snow

Annual Rainfall 60.1"
58% above US avg
Snowfall 81.6"
Wettest Month (Oct) 7.89"
Driest Month (Jul) 2.30"

Air Quality

Earthquake History

4,486 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.6. Most recent: M3.0 on Aug 30, 2025.

Feb 19, 2003 92 km SE of Akutan, Alaska M6.6 127 km
Oct 13, 2009 127 km E of Nikolski, Alaska M6.5 132 km
Jan 22, 2022 71 km S of Unalaska, Alaska M6.2 75 km
Feb 13, 1992 59 km S of Akutan, Alaska M6.0 63 km
Jan 26, 2025 86 km SSW of Unalaska, Alaska M5.6 90 km
Aug 8, 1996 97 km SSW of Unalaska, Alaska M5.5 102 km
May 9, 2001 110 km ESE of Akutan, Alaska M5.5 148 km
Oct 15, 2009 114 km S of Unalaska, Alaska M5.5 119 km
Mar 1, 2002 131 km S of Unalaska, Alaska M5.5 135 km
Jul 9, 2019 92 km E of Nikolski, Alaska M5.5 129 km
Oct 19, 1991 48 km WSW of Unalaska, Alaska M5.4 50 km
May 25, 2000 125 km ESE of Nikolski, Alaska M5.4 146 km
Sep 14, 2019 16 km SSW of Akutan, Alaska M5.4 46 km
May 11, 1999 65 km SSE of Akutan, Alaska M5.4 82 km
Oct 20, 1991 26 km WSW of Dutch Harbor, Alaska M5.4 28 km
Jul 26, 2016 116 km S of Unalaska, Alaska M5.4 121 km
Oct 5, 2024 85 km SSW of Unalaska, Alaska M5.4 90 km
Apr 4, 1993 112 km SE of Akutan, Alaska M5.4 142 km
Jan 10, 2007 81 km WSW of Dutch Harbor, Alaska M5.3 83 km
Aug 1, 2022 67 km SSE of Akutan, Alaska M5.3 82 km
Source: USGS (M2.5+, 1990-2025)

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 0.1 m (0 ft).

Year Location Cause Max Wave Deaths Distance
1965 FOX ISLANDS, ALEUTIAN ISLANDS, AK Earthquake 0.1 m - 119 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

8 volcanoes within 200 km. Closest: Makushin (26 km).

Name Type Elevation Last Eruption Distance
Makushin Stratovolcano 1,800 m (5,906 ft) 1995 26 km
Akutan Stratovolcano 1,303 m (4,275 ft) 1992 43 km
Bogoslof Submarine 150 m (492 ft) 2017 98 km
Okmok Shield 1,073 m (3,520 ft) 2008 118 km
Westdahl Stratovolcano? 1,563 m (5,128 ft) 1992 140 km
Recheschnoi Stratovolcano 1,984 m (6,509 ft) Unknown 157 km
Fisher Stratovolcano 1,112 m (3,648 ft) 1830 159 km
Shishaldin Stratovolcano 2,857 m (9,373 ft) 2020 191 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 33°F (1°C) 6.8 in Coldest
February 34°F (1°C) 5.2 in
March 34°F (1°C) 4.7 in
April 37°F (3°C) 3.5 in
May 42°F (6°C) 4.2 in
June 47°F (8°C) 2.5 in
July 52°F (11°C) 2.3 in Driest
August 54°F (12°C) 2.9 in Warmest
September 49°F (10°C) 5.7 in
October 43°F (6°C) 7.9 in Wettest
November 38°F (3°C) 6.7 in
December 35°F (2°C) 7.9 in

Unalaska has a seasonal temperature swing of 21°F / from 33°F in January to 54°F in August. Total annual precipitation is 60.1 inches, with October being the wettest month (7.9") and July the driest (2.3").

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