Morgan City, LA ZIP codes
Morgan City, Louisiana has 2 ZIP codes, including 1 PO Box ZIP. They are in Assumption Parish and St. Mary Parish.
- Population in these ZIPs
- 20,529
- Avg. median income
- $54,600population-weighted
- Typical home value
- $135,300population-weighted
- Metro area
- Baton Rouge, LA
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Morgan City, LA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 70380 | Assumption Parish | 20,529 | $54,595 | $135,300 |
| 70381 PO Box | 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
Cities near Morgan City
- Berwick 4 mi
- Patterson 8 mi
- Labadieville 12 mi
- Pierre Part 13 mi
- Gibson 14 mi
- Napoleonville 15 mi
- Donner 15 mi
- Centerville 15 mi
- Franklin 19 mi
- Schriever 19 mi
- Belle Rose 22 mi
- Plattenville 22 mi
Frequently asked questions
What county is Morgan City, Louisiana in?
Morgan City ZIP codes are in Assumption Parish and St. Mary Parish.
Which Morgan City ZIP codes are PO Boxes?
70381 is a PO Box or single-organization ZIP code; it has no residential delivery area.