Thorntown, IN
Full City Profile · Indiana · Boone County County
3.9
/5.0
B+
Good
1,155
Population
1,893/sq mi density
$69,875
Median Income
$31,097 per capita
$173,400
Home Value
$342,298 Zillow
$871
Median Rent
31.3% income on rent
52°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$69,875 median income, 0.9% unemployment
A+
Affordability
5.0 / 5.0
$173,400 home value, $871/mo rent
C
Education
2.4 / 5.0
17.9% bachelor's degree or higher
Thorntown experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 26°F in January while summers reach 74°F in July. Annual precipitation totals 42.1 inches. The area receives 18.1 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
26°F Jan (-3°C)
74°F Jul (23°C)
| Annual Average | 51.7°F |
| 4% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 857 ft (261 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 1,893/sq mi |
| Coordinates | 40.1292°N, 86.6100°W |
| Timezone | America/Indiana/Indianapolis |
| County | Boone County County |
| Nearest Airport | Indianapolis International (IND) 33 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
| Good Days % | 87.2% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0478 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 43.2 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 98.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 2.7 in | Coldest |
| February | 30°F (-1°C) | 2.5 in | Driest |
| March | 40°F (5°C) | 3.1 in | |
| April | 52°F (11°C) | 4.3 in | |
| May | 62°F (17°C) | 4.4 in | |
| June | 71°F (22°C) | 4.7 in | Wettest |
| July | 74°F (23°C) | 4.6 in | Warmest |
| August | 72°F (22°C) | 3.5 in | |
| September | 66°F (19°C) | 3.1 in | |
| October | 54°F (12°C) | 3.0 in | |
| November | 42°F (5°C) | 3.4 in | |
| December | 31°F (-0°C) | 2.8 in |
Thorntown has a seasonal temperature swing of 47°F / from 26°F in January to 74°F in July. Total annual precipitation is 42.1 inches, with June being the wettest month (4.7") and February the driest (2.5").