ZIP Code 70538
About Franklin
Franklin is a small city in and the parish seat of St. Mary Parish, Louisiana, United States. The population was 6,134 as of 2025. The city is located on Bayou Teche, southeast of the cities of Lafayette, 47 miles (76 km) and New Iberia, 28 miles (45 km), and 22 miles (35 km) northwest of Morgan City. It is part of the Morgan City Micropolitan Statistical Area and the larger Lafayette-Acadiana combined statistical area.
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Area Profile
US Census (ACS 5-year · Gazetteer)
12,561
population
$55,662
median household income
54
people / sq mi
$109,100
median home value
$860
median gross rent
44.2
median age
6,428
housing units
5,046
households
230.7
land area (sq mi)
Key places in 70538
- Franklin Historic DIstrict historic
Points of interest
- grocery
- fast_food
Brands
- Popeyes (1)
- Sonic (1)