Saint Tammany Parish, Louisiana

Saint Tammany Parish: Parish in Louisiana, United States of America


Saint Tammany Parish is a county located in the U.S. state of Louisiana. As of the 2010 census, the population was 233,740 and a population density of 106 people per km². After 10 years in 2020 county had an estimated population of 263,446 inhabitants. Its county seat is Covington. The county was created 214 years ago in 1809.

Saint Tammany Parish locator map
Location of Saint Tammany Parish on Louisiana map.

Quick Facts about Saint Tammany Parish

Population : 263,446 (2020)
Country : United States of America
State : Louisiana (United States)
Area : 2212 km2
Water as percent of area : 25%
Land as percent of area : 75%
Capital : Covington
Establishment : January 01, 1810
Time Zone : America/Chicago
Local time : 06:10:42 (26th February 2024)
Density : 119 Pop. per km² as of 2020
Population growth : 11.28% (2010-2020)
CovingtonJusticeCenterMarch2009 image
CovingtonJusticeCenterMarch2009 image


Saint Tammany Parish is located at 30°24'32"N 89°57'14"W (30.4087500, -89.9539300). It has 6 neighbors: Jefferson Parish, Orleans Parish, Tangipahoa Parish, Washington Parish, Hancock County and Pearl River County.

Saint Tammany Parish map

Saint Tammany Parish Populated Places

Cities, towns, neighborhoods & other populated places in Saint Tammany Parish.

City Name Population Title
Slidell 27,541 City in Louisiana
Mandeville 12,559 Town in Louisiana, USA
Covington 10,560 City in St.
Eden Isle 7,041 Census-designated place in St.
Abita Springs 2,651 Town in St.
Pearl River 2,618 Town of the United States
Folsom 871 Town
Madisonville 857 Human settlement in Louisiana, United States of America
Sun 498 Village in the northeastern corner of St.

Saint Tammany Parish has 6 neighbours.

  • Covington


The population of Saint Tammany Parish increased by 11.28% in 10 years.

Year Population % Change Method
2010 233,740 - census
2011 236,846 1.31% estimation process
2012 239,064 0.93% estimation process
2013 241,953 1.19% estimation process
2014 245,237 1.34% estimation process
2015 248,930 1.48% estimation process
2016 252,468 1.4% estimation process
2017 255,921 1.35% estimation process
2018 258,035 0.82% estimation process
2019 260,419 0.92% estimation process
2020 263,446 1.15% estimation process

Paroisse de Saint Tammany, Saint Tammany

People born in Saint Tammany Parish (1)

American football player Vincent Alexander was born in Saint Tammany Parish

Louisiana Other Counties (more counties)

County Name Population Title
East Baton Rouge Parish 439,729 Parish in Louisiana, United States
Jefferson Parish 432,346 Parish in Louisiana, United States
Orleans Parish 389,476 New Orleans consolidated city-parish in Louisiana, United States
New Orleans 389,476 The most populous city in Louisiana and the center of the New Orleans metropolitan area.
Lafayette Parish 246,518 Parish in Louisiana, United States
Caddo Parish 237,479 Parish in Louisiana, United States
Baton Rouge 219,052 The capital of Louisiana.
Calcasieu Parish 203,310 Parish in Louisiana, United States
Shreveport 184,786 The second most populous city in Louisiana.
Ouachita Parish 152,439 Parish in Louisiana, United States
Livingston Parish 143,737 Parish in Louisiana, United States
Metairie Terrace 142,489 A census-designated place in Jefferson Parish, Louisiana.
Metairie 138,481 The most populous suburb of New Orleans, Louisiana.
Tangipahoa Parish 136,765 Parish in Louisiana, United States
Ascension Parish 128,665 Parish in Louisiana, United States
Rapides Parish 128,567 Parish in Louisiana, United States