Louisiana · FIPS 22103 · Parish seat: Covington
St. Tammany Parish, LA GIS & Parcel Viewer
Looking for lot lines or a parcel number in St. Tammany Parish, LA? The quickest route is the St. Tammany Parish GeoPortal Maps viewer, the parish parcel map we keep on file for this parish. We link straight to it and add a few tips for getting around.
Open the St. Tammany Parish parcel map ↗
Opens atlas.geoportalmaps.com in a new tab. We link out and never embed or copy parcel data.
St. Tammany Parish at a glance
| Official map | St. Tammany Parish GeoPortal Maps viewer |
|---|---|
| Type | Parish-run map |
| Website | atlas.geoportalmaps.com |
| Access | Free, no login (checked Oct 2026) |
| Parish seat | Covington |
| Population | 275,583 (2023 Census Bureau estimate) |
| Land area | 845 sq mi |
| FIPS code | 22103 |
Where the parcel data comes from
St. Tammany Parish runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. When we tested the link in October 2026 it opened with no login and no fee.
Finding a property on this map
- Open the official link; the map is hosted on GeoPortal Maps, a vendor platform used by 17 counties in our directory.
- Accept any disclaimer, then use the search tool to find a street address, owner or parcel ID.
- Click a parcel to view its attributes.
- Use the layer or basemap controls to add aerials and other layers where the county provides them.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About St. Tammany Parish
The U.S. Census Bureau estimated St. Tammany Parish's population at 275,583 in 2023, spread over about 845 square miles of land, or roughly 326 people per square mile. That makes it number 4 out of 64 Louisiana parishes by population. Another 250 square miles of water fall within its lines, according to Census mapping. Its parish seat is Covington.
Parishes next to St. Tammany Parish
Parcels close to the edge of St. Tammany Parish can fall in the next parish over. Neighboring parishes:
- Jefferson Parish
- Orleans Parish
- St. Bernard Parish
- St. John the Baptist Parish
- Tangipahoa Parish
- Washington Parish (state list)
- Hancock County, MS
- Pearl River County, MS
Our longer guides
A note on accuracy
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.