Louisiana Counties Directory & Interactive Map
Complete official guide to all 64 counties in Louisiana (LA). Explore 2024 US Census population estimates, county seats, FIPS codes, land areas, and interactive mapping tools powered by GeoMap Suite.
Louisiana County Breakdown
Showing 8 of 8 documented counties and seats.
County Name | FIPS | County Seat | Population (Census) | Land Area | Quick Tool |
|---|---|---|---|---|---|
| East Baton Rouge Parish | 22033 | Baton Rouge | 456,781 | 455 sq mi | Lookup |
| Jefferson Parish | 22051 | Gretna | 440,781 | 296 sq mi | Lookup |
| Orleans Parish (New Orleans) | 22071 | New Orleans | 383,997 | 169 sq mi | Lookup |
| St. Tammany Parish | 22103 | Covington | 264,570 | 846 sq mi | Lookup |
| Lafayette Parish | 22055 | Lafayette | 241,753 | 269 sq mi | Lookup |
| Caddo Parish | 22017 | Shreveport | 237,848 | 882 sq mi | Lookup |
| Calcasieu Parish | 22019 | Lake Charles | 216,782 | 1,071 sq mi | Lookup |
| Ouachita Parish | 22073 | Monroe | 160,368 | 611 sq mi | Lookup |
Geographic Structure of Louisiana Counties
County Administration & Governance
In Louisiana, county governments manage vital public infrastructure, tax assessments, law enforcement, judicial courts, election administration, and public records. The county seat (Baton Rouge and other municipal headquarters) houses the primary courthouse, commissioners, and sheriff’s department.
All Louisiana counties carry a unique 5-digit Federal Information Processing Standard (FIPS) code, where the first two digits (22) designate the state and the remaining three digits identify each specific jurisdiction.
Geographic & Demographic Highlights
- Most Populous County:East Baton Rouge Parish (456,781 residents)
- Largest by Land Area:Calcasieu Parish (1,071 sq mi)
- State Capital:Baton Rouge
- Census Bureau Region:South United States
Demographic calculations derive from the United States Census Bureau 2024 Population Estimates Program (PEP) and TIGER/Line geographic boundary files.