Bay Saint Louis, MS ZIP codes
Bay Saint Louis (also written Bay St Louis), Mississippi has 2 ZIP codes, including 1 PO Box ZIP. They are in Hancock County.
- Population in these ZIPs
- 15,561
- Avg. median income
- $62,200population-weighted
- Typical home value
- $239,700population-weighted
- Metro area
- Gulfport-Biloxi, MS
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Bay Saint Louis, MS ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 39520 | Hancock County | 15,561 | $62,176 | $239,700 |
| 39521 PO Box | Hancock County | — | — | — |
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 Bay Saint Louis
- Waveland 7 mi
- Diamondhead 8 mi
- Kiln 8 mi
- Pearlington 9 mi
- Pass Christian 14 mi
- Picayune 16 mi
- Long Beach 19 mi
- Carriere 24 mi
- Gulfport 25 mi
- Saucier 30 mi
- Mc Henry 33 mi
- Biloxi 33 mi
Frequently asked questions
What county is Bay Saint Louis, Mississippi in?
Bay Saint Louis ZIP codes are in Hancock County.
Which Bay Saint Louis ZIP codes are PO Boxes?
39521 is a PO Box or single-organization ZIP code; it has no residential delivery area.