Map of St. Tammany Parish, Louisiana

St. Tammany Parish overview:
Name:St. Tammany Parish
FIPS code:22-103
Founded:October 27, 1810
Named for:Indian Chief Tamanend
Largest city:Slidell
Total Area:1,124 sq mi (2,910 km²)
Land Area:846 sq mi (2,190 km²)
Total Population:264,570
Population Density:312.73/sq mi (120.75/km²)
Time zone:UTC−6 (Central)
Summer Time Zone (DST):UTC−5 (CDT)

St. Tammany Parish location map. Where is St. Tammany Parish?

St. Tammany Parish location on the U.S. Map. Where is St. Tammany Parish.
Location of St. Tammany Parish in the the United States.
St. Tammany Parish location on the Louisiana map. Where is St. Tammany Parish.
Location of St. Tammany Parish in Louisiana.



St. Tammany was originally inhabited by numerous Indian peoples, including the Colapissas, Bayou Goulas, Chickasaw, Biloxi, Choctaw and Pensacola nations (although Frederick S. Ellis, in his book St. Tammany Parish: L’autre Côté du Lac, claims that the regionally prominent Choctaw tribe did not arrive in the area until after it had begun to be settled by Europeans).

In 1699, Pierre Le Moyne d’Iberville, a French explorer, was the first European to visit the area of present-day St. Tammany Parish. While exploring lakes Pontchartrain and Maurepas, Iberville wrote in his journal, “The place where I am is one of the prettiest I have seen, fine level ground bare of canes. The land north of the lakes is a country of pine trees mixed with hard woods. The soil is sandy and many tracks of buffalo and deer can be seen.”

West Florida

After the 18th-century founding and development of New Orleans, French settlers began to enter the region. The primary industry was the production of pitch, tar, turpentine and resin from the forests.

After France was defeated in the French and Indian War, St. Tammany (along with the other future “Florida Parishes”) became part of British West Florida. During this period, the area comprising today’s St. Tammany attracted British loyalists who wanted to escape persecution in the Thirteen Colonies. After Great Britain was defeated in the American Revolutionary War, West Florida was governed by the Spanish. The West Florida period ended with the West Florida revolt, which precipitated annexation by the United States.

Creation and naming of the parish

In 1810, President James Madison claimed West Florida as part of Louisiana and sent William C. C. Claiborne to claim the territory. Claiborne established the boundaries of the Florida Parishes. He created St. Tammany Parish and named it after the Delaware Indian Chief Tamanend (c.1628-1698), who made peace with William Penn and was generally renowned for his goodness. Among the nine Louisiana parishes (counties) named for “saints” (see “List of parishes in Louisiana”), St. Tammany is the only one whose eponym is not a saint of the Roman Catholic Church, the ecclesiastical parishes of which formed the basis for the state’s civil parishes. In fact, Tamanend is not known to have been a Christian, and was certainly not a Roman Catholic. However, he became popularly revered as an “American patron saint” in the post-Revolutionary period (long after his death).

Under Spanish rule, the area east of the Tangipahoa River, which would become St. Tammany Parish (and later Washington Parish to the north), was known as the St. Ferdinand District. Due to the fact that Ferdinand was also the name of the disputed King of Spain at the time, it was deemed that the new parish should have a more “American” sounding name.

19th century

In the early 1830s, there were only two towns in St. Tammany: Covington, a retreat with summer homes and hotels; and Madisonville, a shipbuilding and sawmill town. The area south of Covington to Lake Pontchartrain’s northern shore and extending eastwards to the Pearl River border with the state of Mississippi was known as the Covington Lowlands. This region included the present-day towns of Mandeville, Abita Springs, Lacombe, Slidell, and Pearl River.

Mandeville was founded in 1834 by Bernard de Marigny de Mandeville and was developed as a health resort for wealthy New Orleanians, because it was believed that ozone was both salutary and naturally emitted by the numerous trees in the area (both beliefs later proven false), giving rise to an early name for the region — the “Ozone Belt”.

Regular ferry service commenced across Lake Pontchartrain, and shortly thereafter another resort community was founded, Abita Springs. A railroad was constructed in the 1880s connecting Covington and Abita Springs to Mandeville and to New Orleans, allowing for further growth, particularly in Abita Springs, where underground spring waters permitted supposedly healthful baths.

20th century

With the completion of high-speed road connections to St. Tammany from New Orleans and its older suburbs (Lake Pontchartrain Causeway, the I-10 Twin Span Bridge), the parish began to develop as a bedroom community. Suburban sprawl first took root in and around Slidell, Louisiana, in the eastern part of the parish. Though the Causeway was completed in 1956 and linked suburban Metairie with western St. Tammany, growth in and around western St. Tammany towns like Mandeville, Covington, and Madisonville only gathered momentum in the late 1960s.

21st century

While St. Tammany was sparsely populated and almost wholly rural in the 1950s, its population exceeded 200,000 in the wake of Hurricane Katrina’s landfall in 2005.

A major event in the parish’s transition from a bedroom community of commuters to a more diverse and independent economic unit occurred in 2008 with the relocation of Chevron’s regional corporate headquarters from downtown New Orleans to an office park outside of Covington.

Hurricane Katrina effects

Hurricane Katrina made its final landfall in eastern St. Tammany Parish. The western eye wall passed directly over St. Tammany Parish as a Category 3 hurricane at about 9:45 AM CST, August 29, 2005. The communities of Slidell, Avery Estates, Lakeshore Estates, Oak Harbor, Eden Isles and Northshore Beach were inundated by the storm surge that extended over 6 miles (10 km) inland. The storm surge impacted all 57 miles (92 km) of St. Tammany Parish’s coastline, including Lacombe, Mandeville and Madisonville. The storm surge in the area of the Rigolets Pass was estimated at 16 feet (4.9 m), not including wave action, declining to 7 feet (2.1 m) at Madisonville. The surge had a second peak in eastern St. Tammany as the westerly winds from the southern eye wall pushed the surge to the east, backing up at the bottleneck of the Rigolets Pass.

The twin spans of I-10 bridges between Slidell and New Orleans East were virtually destroyed, and much of I-10 in New Orleans East was under water. The Lake Pontchartrain Causeway and the U.S. Highway 11 bridge, connecting the north and south shores of Lake Pontchartrain, were open only to emergency traffic.

Initial search and rescue operations were conducted south of U.S. Highway 190 from Lacombe east to the state line. Fire District No. 1 and the St. Tammany Parish Sheriff’s office evacuated over 3,000 people from flooded homes and rescued about 300 people in imminent danger. Radio communications among first responders functioned throughout the rescue period, but the 9-1-1 system was not operational for ten days. Utility services were not available anywhere in the parish. Generator power was available for hospitals and a special needs shelter. Hospitals were running at capacity on generator power.

The hurricane-force winds toppled trees and telephone poles parish-wide, blocking all transportation routes. Land debris cleanup continued into 2007, with over 6.6 million cubic yards (5 million m) collected. Debris cleaning in waterways continued at least through 2009. Hurricane Katrina damaged 48,792 housing units in St. Tammany Parish from flood waters, high winds, or both.

St. Tammany Parish Road Map

St. Tammany ParishStreet Map.
Street map of St. Tammany Parish, Louisiana. Source: OpenStreetMap (OSM)
St. Tammany ParishMap
St. Tammany Parishpolitical map.


According to the U.S. Census Bureau, the parish has a total area of 1,124 square miles (2,910 km), of which 846 square miles (2,190 km) is land and 279 square miles (720 km) (25%) is water. It is located to the north of Lake Pontchartrain.

Major highways

  • Interstate 12
  • Interstate 59
  • U.S. Highway 11
  • U.S. Highway 90
  • U.S. Highway 190
  • Louisiana Highway 21
  • Louisiana Highway 22
  • Louisiana Highway 25
  • Louisiana Highway 36
  • Louisiana Highway 40
  • Louisiana Highway 41

Adjacent counties and parishes

National protected areas

  • Big Branch Marsh National Wildlife Refuge
  • Bogue Chitto National Wildlife Refuge (part)

State protected areas

  • Pearl River Wildlife Management Area
  • Lake Ramsey Savannah Wildlife Management Area

State parks

  • Fairview-Riverside State Park
  • Fontainebleau State Park


  • Alton
  • Audubon
  • Barker’s Corner
  • Big Branch
  • Blond
  • Bonfouca
  • Bush
  • Chinchuba
  • Colt
  • Crawford Landing
  • Dave
  • Davis Landing
  • Florenville
  • Goodbee
  • Haaswood
  • Houltonville
  • Hickory
  • Lewisburg
  • Maude
  • McClane City
  • Morgan Bluff
  • North Slidell
  • Oaklawn
  • St. Benedict
  • St. Joe
  • St. Tammany
  • St. Tammany Corner
  • Talisheek
  • Waldheim
  • White Kitchen

St. Tammany Parish Topographic Map

Topographic Map of St. Tammany Parish, Louisiana
St. Tammany Parish Topo map.

St. Tammany Parish Satellite Map

Satellite Map of St. Tammany Parish, Louisiana
St. Tammany Parish satellite map.

St. Tammany Parish Outline Map

Outline Map of St. Tammany Parish, Louisiana
St. Tammany Parish outline map.

See also

Map of Louisiana State and its subdivision: Map of other states:
5/5 - (5 votes)