Hahnville is a community in St. Charles Parish, Louisiana, home to about 3,520 people across 5.6 square miles. Its ZIP code is 70057.
Homes sold for a median of $123 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Hahnville; also Luling and Killona
Each card is that ZIP code’s whole market, including any part outside Hahnville. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Hahnville’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)9 miles away |
|---|---|
| Nearest city of 250,000+ | New Orleans, LA29 miles away |
| Nearest city of 1 million+ | Houston, TX298 miles away |
Straight-line distances from the center of Hahnville; 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.
Hahnville had 2,959 residents in the 2020 census, up 6% since 2000.
It’s the 135th largest of 487 towns in Louisiana by population.
St. Charles Parish grew from 9,072 residents in 1900 to 52,549 in 2020.
St. Charles 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 46°F. About 63.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, New Orleans Intl Ap, LA weather station (10 miles away).
20,789 jobs at 1,032 businesses in St. Charles Parish. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
8 doctors and other health care providers list an office in Hahnville.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 2 |
| Mental health providers | 4 |
| Physical and occupational therapists | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores (1 nearby)
Pharmacies
Libraries (1 nearby)
Theaters and performance venues
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Luling, Killona and Taft.
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.