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Mills, WY
Full City Profile · Wyoming · Natrona County County
3.0
/5.0
B
Good
4,315
Population
848/sq mi density
$55,594
Median Income
$31,081 per capita
$166,800
Home Value
$301,892 Zillow
$1,047
Median Rent
33.2% income on rent
46°F
Avg Temperature
302 sunny days/yr
75
Violent Crime/100K
1,786 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$55,594 median income, 2.9% unemployment
A+
Affordability
5.0 / 5.0
$166,800 home value, $1,047/mo rent
F
Safety
1.0 / 5.0
75 violent crimes/100K
D
Education
2.0 / 5.0
12.1% bachelor's degree or higher
Mills experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 25°F in January while summers reach 71°F in July. The area gets 302 sunny days per year. Annual precipitation totals 12.2 inches. The area receives 71.8 inches of snow annually. Air quality is rated Good with a median AQI of 34.
Temperature
25°F Jan (-4°C)
71°F Jul (22°C)
| Annual Average | 45.6°F |
| 16% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 5,209 ft (1,588 m) |
| Area | 2.2 sq mi (5.6 km²) |
| Population Density | 848/sq mi |
| Coordinates | 42.8499°N, 106.3908°W |
| Timezone | America/Denver |
| County | Natrona County County |
| Nearest Airport | Casper/Natrona County International (CPR) 5 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0471 ppm |
| NO₂ (Nitrogen Dioxide) | 7.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.63 ppb |
| PM2.5 (Fine Particles) | 3.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 68.9 / 100 |
| Social Vulnerability | 20.5 / 100 |
| Community Resilience | 57.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Very High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 0.5 in | Coldest, Driest |
| February | 27°F (-3°C) | 0.6 in | |
| March | 35°F (2°C) | 0.9 in | |
| April | 43°F (6°C) | 1.5 in | |
| May | 52°F (11°C) | 2.2 in | Wettest |
| June | 63°F (17°C) | 1.5 in | |
| July | 71°F (22°C) | 1.2 in | Warmest |
| August | 69°F (21°C) | 0.7 in | |
| September | 59°F (15°C) | 0.9 in | |
| October | 47°F (9°C) | 1.0 in | |
| November | 34°F (1°C) | 0.8 in | |
| December | 26°F (-3°C) | 0.6 in |
Mills has a seasonal temperature swing of 46°F / from 25°F in January to 71°F in July. Total annual precipitation is 12.3 inches, with May being the wettest month (2.2") and January the driest (0.5").