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Mill Bay, AK
Full City Profile · Alaska · Kodiak Island Borough County
3.5
/5.0
B+
Good
3,541
Population
1,029/sq mi density
$94,359
Median Income
$51,428 per capita
$430,600
Home Value
$435,931 Zillow
$2,777
Median Rent
25.9% income on rent
42°F
Avg Temperature
166 sunny days/yr
647
Violent Crime/100K
4,157 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$94,359 median income, 0.6% unemployment
A
Affordability
4.1 / 5.0
$430,600 home value, $2,777/mo rent
F
Safety
1.0 / 5.0
647 violent crimes/100K (70% above avg)
B+
Education
3.9 / 5.0
36.4% bachelor's degree or higher
Mill Bay has a cool climate with an average annual temperature of 42°F (6°C). Winters average 32°F in January while summers reach 55°F in July. The area gets 166 sunny days per year. Annual precipitation totals 75.6 inches. The area receives 42.9 inches of snow annually. Air quality is rated Good with a median AQI of 21.
Temperature
32°F Jan (-0°C)
55°F Jul (13°C)
| Annual Average | 41.9°F |
| 22% below US avg | |
| January Average | 32°F (-0°C) |
| July Average | 55°F (13°C) |
| Sunny Days | 166 days/yr |
Geography
| Elevation | 110 ft (34 m) |
| Area | 3.4 sq mi (8.9 km²) |
| Population Density | 1,029/sq mi |
| Coordinates | 57.8155°N, 152.3675°W |
| Timezone | America/Anchorage |
| County | Kodiak Island Borough County |
| Nearest Airport | Ted Stevens Anchorage International (ANC) 246 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 65.1 / 100 |
| Social Vulnerability | 33.2 / 100 |
| Community Resilience | 18.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | No Rating |
| Strong Wind | No Rating |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | No Rating |
| Landslide | Relatively Moderate |
| Coastal Flood | No Rating |
| Tsunami | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 30.0 m (98 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1788 | ALASKA PENINSULA, AK | Earthquake | 30.0 m | — | 98 km |
| 1854 | KODIAK ISLAND, AK | Eruption + Earthquake | 2.4 m | — | 93 km |
| 1970 | ANDREANOF ISLANDS, AK | Earthquake | 0.0 m | — | 98 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Katmai (161 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Katmai | Stratovolcano | 2,047 m (6,716 ft) | 1912 | 161 km |
| Trident | Stratovolcano | 1,864 m (6,115 ft) | 1974 | 168 km |
| Martin | Stratovolcano | 1,863 m (6,112 ft) | 1953 | 181 km |
| Augustine | Lava dome(s) | 1,252 m (4,108 ft) | 2006 | 183 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 7.6 in | |
| February | 31°F (-1°C) | 5.6 in | Coldest |
| March | 32°F (0°C) | 5.0 in | |
| April | 36°F (2°C) | 5.2 in | |
| May | 43°F (6°C) | 5.9 in | |
| June | 49°F (9°C) | 5.1 in | |
| July | 55°F (13°C) | 3.9 in | Warmest, Driest |
| August | 54°F (12°C) | 4.7 in | |
| September | 49°F (9°C) | 7.3 in | |
| October | 41°F (5°C) | 7.8 in | Wettest |
| November | 35°F (2°C) | 6.3 in | |
| December | 31°F (-0°C) | 7.0 in |
Mill Bay has a seasonal temperature swing of 24°F / from 31°F in February to 55°F in July. Total annual precipitation is 71.5 inches, with October being the wettest month (7.8") and July the driest (3.9").