Iowa Colony, TX
Full City Profile · Texas · Brazoria County County
3.7
/5.0
B+
Good
11,028
Population
996/sq mi density
$126,167
Median Income
$47,835 per capita
$356,300
Home Value
$333,049 Zillow
$2,188
Median Rent
18.0% income on rent
71°F
Avg Temperature
104
Violent Crime/100K
594 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$126,167 median income, 5.8% unemployment
A+
Affordability
5.0 / 5.0
$356,300 home value, $2,188/mo rent
F
Safety
1.0 / 5.0
104 violent crimes/100K
A+
Education
4.5 / 5.0
44.1% bachelor's degree or higher
Iowa Colony has a warm climate with an average annual temperature of 71°F (22°C). Winters average 55°F in January while summers reach 85°F in July. Annual precipitation totals 53.3 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
55°F Jan (13°C)
85°F Jul (29°C)
| Annual Average | 71.3°F |
| 32% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 85°F (29°C) |
Geography
| Elevation | 49 ft (15 m) |
| Area | 7.3 sq mi (18.9 km²) |
| Population Density | 996/sq mi |
| Coordinates | 29.4411°N, 95.4238°W |
| Timezone | America/Chicago |
| County | Brazoria County County |
| Nearest Airport | William P Hobby (HOU) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
| Good Days % | 83.0% |
| Unhealthy Days | 6 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0382 ppm |
| NO₂ (Nitrogen Dioxide) | 6.4 ppb |
| SO₂ (Sulfur Dioxide) | 0.55 ppb |
| PM2.5 (Fine Particles) | 8.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.6 / 100 |
| Social Vulnerability | 24.0 / 100 |
| Community Resilience | 82.0 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 3.6 in | Coldest |
| February | 59°F (15°C) | 2.9 in | |
| March | 65°F (18°C) | 2.8 in | Driest |
| April | 71°F (21°C) | 3.7 in | |
| May | 78°F (25°C) | 5.1 in | |
| June | 83°F (29°C) | 5.2 in | |
| July | 85°F (29°C) | 4.2 in | |
| August | 85°F (30°C) | 5.6 in | Warmest |
| September | 81°F (27°C) | 5.4 in | |
| October | 73°F (23°C) | 5.8 in | Wettest |
| November | 64°F (18°C) | 4.2 in | |
| December | 57°F (14°C) | 4.7 in |
Iowa Colony has a seasonal temperature swing of 30°F / from 55°F in January to 85°F in August. Total annual precipitation is 53.3 inches, with October being the wettest month (5.8") and March the driest (2.8").