Denison, IA
Full City Profile · Iowa · Crawford County County
3.0
/5.0
B
Good
8,247
Population
1,261/sq mi density
$63,850
Median Income
$28,401 per capita
$137,600
Home Value
$182,875 Zillow
$770
Median Rent
27.7% income on rent
47°F
Avg Temperature
124
Violent Crime/100K
859 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$63,850 median income, 1.9% unemployment
A+
Affordability
5.0 / 5.0
$137,600 home value, $770/mo rent
F
Safety
1.0 / 5.0
124 violent crimes/100K
C
Education
2.5 / 5.0
18.5% bachelor's degree or higher
Denison experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 19°F in January while summers reach 73°F in July. Annual precipitation totals 33.6 inches. The area receives 34.5 inches of snow annually.
Temperature
19°F Jan (-7°C)
73°F Jul (23°C)
| Annual Average | 47.4°F |
| 12% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 1,269 ft (387 m) |
| Area | 6.6 sq mi (17.0 km²) |
| Population Density | 1,261/sq mi |
| Coordinates | 42.0164°N, 95.3529°W |
| Timezone | America/Chicago |
| County | Crawford County County |
| Nearest Airport | Eppley Airfield (OMA) 57 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 60.9 / 100 |
| Social Vulnerability | 28.2 / 100 |
| Community Resilience | 23.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 0.7 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.0 in | |
| March | 35°F (2°C) | 1.9 in | |
| April | 47°F (8°C) | 3.4 in | |
| May | 59°F (15°C) | 4.6 in | |
| June | 69°F (21°C) | 4.9 in | Wettest |
| July | 73°F (23°C) | 4.1 in | Warmest |
| August | 71°F (22°C) | 4.4 in | |
| September | 63°F (17°C) | 3.3 in | |
| October | 50°F (10°C) | 2.6 in | |
| November | 36°F (2°C) | 1.5 in | |
| December | 24°F (-4°C) | 1.2 in |
Denison has a seasonal temperature swing of 55°F / from 19°F in January to 73°F in July. Total annual precipitation is 33.6 inches, with June being the wettest month (4.9") and January the driest (0.7").