ZIP codes
7
St. Mary Parish, LA Demographics & ZIP Codes
St. Mary Parish, Louisiana demographics and median household income by ZIP code — 7 ZIP codes — population 28,204 — avg. income $46,602 — avg. home value $136,780. Compare income, housing, and ZIP-level data on US5.
Population
28,204
Median household income (avg.)
$46,602
62% of U.S. median
Average home value
$136,780
39% of U.S. median
Average rent
$575
49% of U.S. median
St. Mary Parish demographics
St. Mary Parish, Louisiana covers 7 ZIP codes, with a combined ZIP-area population of about 28,204.
Median household income in St. Mary Parish
The average median household income across ZIP codes in St. Mary Parish, Louisiana is about $46,602 — about 19% below the LA ZIP average ($57,777), and about 38% below the U.S. median ($75,149).
Among ZIPs with income data, 70523 (Charenton) is near the top at about $61,019, while 70522 (Centerville) is near the bottom at about $26,488.
Housing in St. Mary Parish
For housing in St. Mary Parish, Louisiana, the average median home value is about $136,780 and the average median rent is about $575.
The most populous ZIP is 70538 (Franklin) with about 12,561 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in St. Mary Parish
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 70538 | Franklin | St. Mary Parish | LA | 12,561 | $55,662 | $109,100 |
| 70392 | Patterson | St. Mary Parish | LA | 8,158 | $49,538 | $141,600 |
| 70342 | Berwick | St. Mary Parish | LA | 4,732 | $56,146 | $190,600 |
| 70514 | Baldwin | St. Mary Parish | LA | 1,757 | $30,761 | $127,500 |
| 70523 | Charenton | St. Mary Parish | LA | 444 | $61,019 | $115,100 |
| 70522 | Centerville | St. Mary Parish | LA | 429 | $26,488 | — |
| 70340 | Amelia | St. Mary Parish | LA | 123 | — | — |
Frequently asked questions
What are the demographics of St. Mary Parish?
St. Mary Parish, Louisiana has a combined ZIP-area population of about 28,204 across 7 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in St. Mary Parish?
The average median household income across ZIP codes in St. Mary Parish, Louisiana is about $46,602, about 19% below the state ZIP average ($57,777), and about 38% below the U.S. median ($75,149). Average median home value is about $136,780. Among ZIPs with data, 70523 (Charenton) is near the top ($61,019) and 70522 (Centerville) is near the bottom ($26,488).
How many ZIP codes are in St. Mary Parish?
St. Mary Parish, Louisiana includes 7 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for St. Mary Parish?
This page lists ZIP codes in St. Mary Parish, Louisiana with population, median household income, and home value. Select a ZIP for a full demographics profile.