St. Tammany Parish, Louisiana ZIP codes
20 ZIP codes are in St. Tammany Parish, plus 2 that cross in from neighboring parishes. It's part of the Slidell-Mandeville-Covington, LA metro area.
- ZIP codes
- 20
- Population in these ZIPs
- 272,334
- Avg. median income
- $83,100population-weighted
- Cities & towns
- 12
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in St. Tammany Parish
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 70420 | Abita Springs | 7,950 | $78,171 | $278,000 |
| 70431 | Bush | 5,769 | $69,813 | $282,800 |
| 70433 | Covington | 41,876 | $81,241 | $343,700 |
| 70434 PO Box | Covington | — | — | — |
| 70435 | Covington | 22,475 | $80,926 | $305,000 |
| 70437 | Folsom | 8,030 | $61,280 | $298,000 |
| 70445 | Lacombe | 9,288 | $78,394 | $218,600 |
| 70447 | Madisonville | 17,897 | $122,574 | $377,800 |
| 70448 | Mandeville | 26,338 | $95,682 | $341,800 |
| 70452 | Pearl River | 12,650 | $62,917 | $233,100 |
| 70457 | Saint Benedict | 143 | — | — |
| 70458 | Slidell | 39,034 | $72,843 | $221,200 |
| 70459 PO Box | Slidell | — | — | — |
| 70460 | Slidell | 21,669 | $62,565 | $190,900 |
| 70461 | Slidell | 34,808 | $89,003 | $270,300 |
| 70463 | Sun | 99 | $25,625 | $134,400 |
| 70464 | Talisheek | 109 | — | — |
| 70469 PO Box | Slidell | — | — | — |
| 70470 PO Box | Mandeville | — | — | — |
| 70471 | Mandeville | 24,199 | $96,501 | $407,300 |
ZIP codes partly in St. Tammany Parish
These ZIP codes are mostly in a neighboring parish but cover part of St. Tammany Parish.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 70427 | Bogalusa | Washington Parish | 17,596 | $38,074 | $97,800 |
| 70438 | Franklinton | Washington Parish | 19,349 | $52,864 | $190,000 |
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 and towns in St. Tammany Parish
Nearby parishes
Frequently asked questions
How many ZIP codes are in St. Tammany Parish, Louisiana?
20 ZIP codes are mainly in St. Tammany Parish, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in St. Tammany Parish?
ZIP codes in St. Tammany Parish use the city names Abita Springs, Bush, Covington, Folsom, Lacombe, Madisonville, Mandeville, Pearl River, Saint Benedict, Slidell, Sun and Talisheek.
What metro area is St. Tammany Parish in?
St. Tammany Parish is part of the Slidell-Mandeville-Covington, LA metropolitan statistical area.