St. Tammany Parish, Louisiana
St. Tammany Parish, Louisiana, has 279,108 residents (July 2025 estimate). Its county seat is Covington. It uses Central Time and covers 845 sq mi (2,189 km²) of land. It is a county equivalent (parish).
- Resident population, July 2025
- 279,108
- Land area
- 845 sq mi (2,189 km²)
- County seat or government
- Covington
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $81,202 ± $1,958
- Median home value
- $284,000 ± $5,856
- Median rent, with utilities
- $1,332 ± $35
- Homes lived in by their owners
- 78.9% ± 0.8 points
- County type
- Parish
- Metro or micro area
- Slidell-Mandeville-Covington, LA metro areaCentral parish
- Water area
- 250 sq mi (648 km²)
- State
- Louisiana
- County code (FIPS)
- 22103
- Coordinates (central point)
- 30.410022, -89.951962
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in St. Tammany Parish
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 7043341,876 people
- 7045839,034 people
- 7046134,808 people
- 7044826,338 people
- 7047124,199 people
- 7043522,475 people
- 7046021,669 people
- 7043819,349 people
- 7044717,897 people
- 7042717,596 people
- 7045212,650 people
- 704459,288 people
All 18
18 ZIP Code areas overlap St. Tammany Parish. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in St. Tammany Parish, largest first
- St. Tammany Parish School District272,421 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Slidell, Louisiana (city)28,561 people
- Mandeville, Louisiana (city)12,946 people
- Covington, Louisiana (city)11,658 people
- Eden Isle, Louisiana (CDP)7,683 people
- Lacombe, Louisiana (CDP)6,310 people
- Abita Springs, Louisiana (town)2,699 people
- Pearl River, Louisiana (town)2,614 people
- Madisonville, Louisiana (town)869 people
- Folsom, Louisiana (village)709 people
- Lewisburg, Louisiana (CDP)484 people
- Sun, Louisiana (village)381 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Orleans Parish, Louisiana25 mi south
- Hancock County, Mississippi28 mi east
- Tangipahoa Parish, Louisiana31 mi northwest
- Washington Parish, Louisiana31 mi north
- Pearl River County, Mississippi33 mi northeast
- St. John the Baptist Parish, Louisiana37 mi southwest
- St. Bernard Parish, Louisiana53 mi southeast
- Jefferson Parish, Louisiana63 mi south
Before using this answer on a form
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