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Coggon, IA
Full City Profile · Iowa · Linn County County
3.5
/5.0
B+
Good
803
Population
1,131/sq mi density
$76,500
Median Income
$38,575 per capita
$146,000
Home Value
$236,608 Zillow
$700
Median Rent
20.0% income on rent
47°F
Avg Temperature
260 sunny days/yr
255
Violent Crime/100K
1,806 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$76,500 median income, 1.0% unemployment
A+
Affordability
5.0 / 5.0
$146,000 home value, $700/mo rent
F
Safety
1.0 / 5.0
255 violent crimes/100K
B+
Education
3.6 / 5.0
32.4% bachelor's degree or higher
Coggon experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 18°F in January while summers reach 72°F in July. The area gets 260 sunny days per year. Annual precipitation totals 39.2 inches. Air quality is rated Good with a median AQI of 43.
Temperature
18°F Jan (-8°C)
72°F Jul (22°C)
| Annual Average | 46.5°F |
| 14% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 949 ft (289 m) |
| Area | 0.6 sq mi (1.7 km²) |
| Population Density | 1,131/sq mi |
| Coordinates | 42.2778°N, 91.5299°W |
| Timezone | America/Chicago |
| County | Linn County County |
| Nearest Airport | Monticello Regional (MXO) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0481 ppm |
| SO₂ (Sulfur Dioxide) | 0.46 ppb |
| PM2.5 (Fine Particles) | 11.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.7 / 100 |
| Social Vulnerability | 15.4 / 100 |
| Community Resilience | 98.7 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Very High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.0 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.0 in | |
| March | 36°F (2°C) | 2.2 in | |
| April | 49°F (9°C) | 3.4 in | |
| May | 60°F (16°C) | 4.0 in | |
| June | 70°F (21°C) | 4.6 in | Wettest |
| July | 72°F (22°C) | 4.3 in | Warmest |
| August | 71°F (22°C) | 4.5 in | |
| September | 63°F (17°C) | 4.1 in | |
| October | 51°F (11°C) | 2.6 in | |
| November | 36°F (2°C) | 2.1 in | |
| December | 23°F (-5°C) | 1.5 in |
Coggon has a seasonal temperature swing of 54°F / from 18°F in January to 72°F in July. Total annual precipitation is 35.1 inches, with June being the wettest month (4.6") and January the driest (1.0").