County ProfileLA
St. Tammany County
Population: 264,570 · 20 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
264,570
People
Median age
40.5
Housing
Total households
105,082
Income
Median household income
$81,202
Housing
Total housing units
113,911
Employment
Employment rate
59.3%
Education
Bachelor’s degree or higher
37.7%
Healthcare
Insured population
93.2%
County details
Local time 01:20:28(CT)| Name | St. Tammany |
|---|---|
| Total ZIP codes | 20total |
| ZIP codes (by type) | 13 Standard7 PO Box |
| Area code | 985 |
| Timezone | Central Time (CT) |
| Coordinates | 30.4100224, -89.9519622 |
| Land area | 845.3 sq miles(2,189.3 km²) |
Map of St. Tammany county, Louisiana with ZIP codes
Cities and Communities in St. Tammany County
Compare the largest cities in St. Tammany County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Slidell | 28,781 | $70,497 | 5ZIPs |
| Mandeville | 13,192 | $94,405 | 3ZIPs |
| Covington | 11,564 | $75,851 | 3ZIPs |
| Lacombe | 8,657 | $72,813 | 1ZIPs |
| Bush | 5,173 | — | 1ZIPs |
| Abita Springs | 2,631 | $77,257 | 1ZIPs |
| Pearl River | 2,565 | $56,719 | 1ZIPs |
| Madisonville | 850 | $109,583 | 1ZIPs |
| Folsom | 769 | $62,375 | 1ZIPs |
| Sun | 392 | — | 1ZIPs |
| Saint Benedict | 221 | — | 1ZIPs |
| Talisheek | 220 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in St. Tammany County
Review the most populated postal areas across St. Tammany County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 70433 | Covington | $81,241 | 41,423 |
| 70458 | Slidell | $72,843 | 37,798 |
| 70461 | Slidell | $89,003 | 30,740 |
| 70448 | Mandeville | $95,682 | 25,670 |
| 70471 | Mandeville | $96,501 | 23,334 |
| 70460 | Slidell | $62,565 | 22,429 |
| 70435 | Covington | $80,926 | 20,828 |
| 70447 | Madisonville | $122,574 | 17,120 |
| 70452 | Pearl River | $62,917 | 13,187 |
| 70445 | Lacombe | $78,394 | 10,866 |
| 70420 | Abita Springs | $78,171 | 8,030 |
| 70437 | Folsom | $61,280 | 7,575 |
| 70431 | Bush | $69,813 | 5,173 |
| 70457 | Saint Benedict | — | 221 |
| 70464 | Talisheek | — | 220 |
| 70463 | Sun | $25,625 | 98 |
| 70434 | Covington | — | — |
| 70459 | Slidell | — | — |
| 70469 | Slidell | — | — |
| 70470 | Mandeville | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS