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Old Jefferson, LA
Full City Profile · Louisiana · East Baton Rouge Parish County
3.9
/5.0
B+
Good
7,790
Population
2,213/sq mi density
$85,466
Median Income
$57,224 per capita
$235,900
Home Value
$332,708 Zillow
$1,174
Median Rent
38.5% income on rent
67°F
Avg Temperature
313 sunny days/yr
809
Violent Crime/100K
7,748 property/100K
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$85,466 median income, 3.4% unemployment
A+
Affordability
5.0 / 5.0
$235,900 home value, $1,174/mo rent
F
Safety
1.0 / 5.0
809 violent crimes/100K (113% above avg)
A+
Education
5.0 / 5.0
56.4% bachelor's degree or higher
Old Jefferson enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 50°F in January while summers reach 82°F in July. The area gets 313 sunny days per year. Annual precipitation totals 60.5 inches. Air quality is rated Good with a median AQI of 42.
Temperature
50°F Jan (10°C)
82°F Jul (28°C)
| Annual Average | 67.3°F |
| 25% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 313 days/yr |
Geography
| Elevation | 28 ft (9 m) |
| Area | 3.5 sq mi (9.1 km²) |
| Population Density | 2,213/sq mi |
| Coordinates | 30.3775°N, 91.0060°W |
| Timezone | America/Chicago |
| County | East Baton Rouge Parish County |
| Nearest Airport | Louis Armstrong New Orleans International (MSY) 52 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0413 ppm |
| NO₂ (Nitrogen Dioxide) | 7.3 ppb |
| SO₂ (Sulfur Dioxide) | 0.70 ppb |
| CO (Carbon Monoxide) | 0.14 ppm |
| PM2.5 (Fine Particles) | 9.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.0 / 100 |
| Social Vulnerability | 66.4 / 100 |
| Community Resilience | 59.6 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very High |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 5.8 in | Coldest |
| February | 54°F (12°C) | 5.2 in | |
| March | 61°F (16°C) | 5.2 in | |
| April | 68°F (20°C) | 5.3 in | |
| May | 75°F (24°C) | 5.2 in | |
| June | 80°F (27°C) | 5.3 in | |
| July | 82°F (28°C) | 6.3 in | Wettest |
| August | 82°F (28°C) | 5.9 in | Warmest |
| September | 78°F (26°C) | 5.1 in | |
| October | 69°F (20°C) | 3.9 in | Driest |
| November | 60°F (15°C) | 4.5 in | |
| December | 54°F (12°C) | 5.4 in |
Old Jefferson has a seasonal temperature swing of 32°F / from 50°F in January to 82°F in August. Total annual precipitation is 63.0 inches, with July being the wettest month (6.3") and October the driest (3.9").