Morgan City, LA micro area ZIP codes
The Morgan City, LA micropolitan statistical area (CBSA 34020) covers 1 county in Louisiana and 9 ZIP codes.
- ZIP codes
- 9
- Population
- 28,129
- Avg. median income
- $52,200population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Morgan City, LA area
ZIP codes in the Morgan City, LA area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 70340 | Amelia | St. Mary Parish | 0 | — | — |
| 70342 | Berwick | St. Mary Parish | 4,607 | $51,580 | $152,700 |
| 70381 PO Box | Morgan City | St. Mary Parish | — | — | — |
| 70392 | Patterson | St. Mary Parish | 8,173 | $57,959 | $156,600 |
| 70514 | Baldwin | St. Mary Parish | 1,914 | $31,817 | $115,600 |
| 70522 | Centerville | St. Mary Parish | 495 | $26,321 | — |
| 70523 | Charenton | St. Mary Parish | 476 | $63,408 | $120,300 |
| 70538 | Franklin | St. Mary Parish | 12,464 | $52,407 | $104,500 |
| 70540 PO Box | Garden City | St. Mary Parish | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Morgan City, LA micro area?
9 ZIP codes, based on each ZIP code's main county.
Which counties make up the Morgan City, LA area?
St. Mary Parish.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).