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Union Mills, IN
Full City Profile · Indiana · LaPorte County County
3.4
/5.0
B
Good
159
Population
261/sq mi density
$99,219
Median Income
$54,251 per capita
$206,300
Home Value
$261,610 Zillow
49°F
Avg Temperature
275 sunny days/yr
155
Violent Crime/100K
3,395 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$99,219 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$206,300 home value, /mo rent
F
Safety
1.0 / 5.0
155 violent crimes/100K
C
Education
2.4 / 5.0
17.6% bachelor's degree or higher
Union Mills experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 23°F in January while summers reach 72°F in July. The area gets 275 sunny days per year. Annual precipitation totals 39.5 inches. The area receives 33.6 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
23°F Jan (-5°C)
72°F Jul (22°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 747 ft (228 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 261/sq mi |
| Coordinates | 41.4953°N, 86.7839°W |
| Timezone | America/Indiana/Indianapolis |
| County | LaPorte County County |
| Nearest Airport | Porter County Regional (VPZ) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0455 ppm |
| PM2.5 (Fine Particles) | 8.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.9 / 100 |
| Social Vulnerability | 48.7 / 100 |
| Community Resilience | 82.6 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 24 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 2.0 in | Coldest |
| February | 27°F (-3°C) | 1.7 in | Driest |
| March | 38°F (3°C) | 2.8 in | |
| April | 49°F (9°C) | 3.7 in | |
| May | 60°F (16°C) | 3.7 in | |
| June | 70°F (21°C) | 4.4 in | Wettest |
| July | 72°F (22°C) | 3.9 in | Warmest |
| August | 71°F (22°C) | 3.7 in | |
| September | 64°F (18°C) | 3.7 in | |
| October | 52°F (11°C) | 3.0 in | |
| November | 40°F (5°C) | 3.3 in | |
| December | 28°F (-2°C) | 2.8 in |
Union Mills has a seasonal temperature swing of 49°F / from 23°F in January to 72°F in July. Total annual precipitation is 38.8 inches, with June being the wettest month (4.4") and February the driest (1.7").