Mermentau is a village in Acadia Parish, Louisiana, home to about 627 people across 2.1 square miles. Its ZIP code is 70556, and parts of 70559 are in Mermentau too.
Mostly Mermentau
Mostly Morse; part is in Mermentau
We’re writing up Mermentau’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Louis Armstrong New Orleans International Airport (MSY)137 miles away |
|---|---|
| Closer regional airport | Lafayette Regional Airport (LFT)34 miles away |
| Nearest city of 250,000+ | New Orleans, LA157 miles away |
| Nearest city of 1 million+ | Houston, TX172 miles away |
Straight-line distances from the center of Mermentau; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Mermentau had 516 residents in the 2020 census, down 28% since 2000.
It’s the 325th largest of 487 towns in Louisiana by population.
Acadia Parish grew from 23,483 residents in 1900 to 57,576 in 2020.
Acadia Parish, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 91°F in summer, and winter lows average 42°F. About 63.6 inches of rain and melted snow fall in a typical year, with about 0 inches of snow.
Source: NOAA 1991–2020 climate normals, Jennings, LA weather station (7 miles away).
12,018 jobs at 1,150 businesses in Acadia Parish. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Public schools here are run by Acadia Parish. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Mermentau Elementary SchoolMermentau | Pre-K–7 | 142 | Public | 2.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Morse and Midland.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.