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Louisiana

Postal abbreviation LA. 719 ZIP codes across 64 counties.

Population	4,611,961
Postal abbreviation	LA
ZIP codes	719 ZIP codes →
Area codes	225 318 337 457 504 985
Time zone	Central
Counties	64

Largest cities by population

Largest counties by population

East Baton Rouge Parish · 452,938 Jefferson Parish · 430,920 Orleans Parish · 371,853 St. Tammany Parish · 272,421 Lafayette Parish · 247,997 Caddo Parish · 230,004 Calcasieu Parish · 207,088 Ouachita Parish · 158,480 Livingston Parish · 148,115 Tangipahoa Parish · 136,738

Counties in Louisiana

Acadia Parish Allen Parish Ascension Parish Assumption Parish Avoyelles Parish Beauregard Parish Bienville Parish Bossier Parish Caddo Parish Calcasieu Parish Caldwell Parish Cameron Parish Catahoula Parish Claiborne Parish Concordia Parish De Soto Parish East Baton Rouge Parish East Carroll Parish East Feliciana Parish Evangeline Parish Franklin Parish Grant Parish Iberia Parish Iberville Parish Jackson Parish Jefferson Davis Parish Jefferson Parish Lafayette Parish Lafourche Parish LaSalle Parish Lincoln Parish Livingston Parish Madison Parish Morehouse Parish Natchitoches Parish Orleans Parish Ouachita Parish Plaquemines Parish Pointe Coupee Parish Rapides Parish Red River Parish Richland Parish Sabine Parish St. Bernard Parish St. Charles Parish St. Helena Parish St. James Parish St. John the Baptist Parish St. Landry Parish St. Martin Parish St. Mary Parish St. Tammany Parish Tangipahoa Parish Tensas Parish Terrebonne Parish Union Parish Vermilion Parish Vernon Parish Washington Parish Webster Parish West Baton Rouge Parish West Carroll Parish West Feliciana Parish Winn Parish

Population: U.S. Census Bureau, ACS 5-year estimates, 2024.