Louisiana Parishes: History, Governance, and Geography
While most U.S. states utilize counties as their primary administrative subdivisions, Louisiana stands out for its unique terminology. Along with Alaska, Louisiana is one of the only states that does not use the word "county" for its primary divisions. Instead, the state is divided into parishes (from the French paroisses), a naming convention that reflects the region's deep colonial roots.
The use of the term "parish" is tied to the French colonial era and the influence of the Roman Catholic Church, where local government was originally based on ecclesiastical parishes—geographic areas served by a local church.
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Key Facts
- Total Number: 64 parishes.
- Most Populous: East Baton Rouge Parish (456,180 residents).
- Least Populous: Tensas Parish (3,700 residents).
- Largest Area: Plaquemines Parish (2,429 square miles).
- Smallest Area: West Baton Rouge Parish (203 square miles).
- Governance: 38 parishes are governed by a police jury; 26 use other systems like council-manager or consolidated city/parish models.
The Evolution of Louisiana's Divisions
From Colonies to Counties
Because Louisiana was formed from French and Spanish colonies, both of which were officially Roman Catholic, the early local government followed the church's ecclesiastical divisions. Following the Louisiana Purchase, the territorial legislative council divided the Territory of Orleans into 12 counties in April 1805. These early counties were loosely defined and largely mirrored the existing church parishes.
The Transition to Parishes
The shift toward the modern system began on March 31, 1807, when the territorial legislature created 19 parishes. Interestingly, the term "county" remained in use alongside "parish" until 1845. By the time Louisiana was admitted to the Union on April 30, 1812, it consisted of 25 parishes.
Throughout the 19th century, the number of parishes grew as land was subdivided. For example, Jefferson Parish was carved from Orleans Parish in 1825, and several parishes were created in 1843, including Bossier and DeSoto. The final official abandonment of the "county" term occurred in 1845.
Reconstruction and Modern Expansion
During the Reconstruction era, the state government established several new parishes, including Iberia, Richland, Tangipahoa, and Grant. A surveying error during the creation of Iberia Parish resulted in St. Martin Parish being split into two non-contiguous parts, making it one of the few county-level units in the U.S. with its own exclaves.
The parish count reached its current total of 64 in 1910, following the creation of Allen, Beauregard, and Jefferson Davis parishes from Calcasieu Parish. The most recent significant boundary change occurred in 1979, when Lake Pontchartrain was divided among six different parishes.
Administrative Structure and Governance
Louisiana's parishes serve as second-level administrative divisions. While they function similarly to counties in other states, their governance varies. A police jury—a council-based governing body—manages 38 of the parishes. The remaining 26 utilize diverse structures, such as council-president, council-manager, or parish commissions. In some cases, the parish and city governments are consolidated into a single entity.
Below these parishes, the state is further subdivided into cities, towns, census-designated places, and unincorporated areas.
| Metric | Minimum | Maximum | Average |
|---|---|---|---|
| Population | 3,700 (Tensas) | 456,180 (East Baton Rouge) | 72,159 |
| Land Area (sq mi) | 203 (West Baton Rouge) | 2,429 (Plaquemines) | 781 |
Parishes in Popular Culture
The unique nature of Louisiana's parishes has inspired many fictional settings in literature and film. Because the term "parish" sounds distinct, authors often create imaginary ones to ground their stories in the region. Examples include Garnet Parish in Rebecca Wells' novels, Renard Parish in the True Blood series, and Dulvey Parish in the video game Resident Evil 7: Biohazard.
Frequently Asked Questions
Why does Louisiana use "parishes" instead of "counties"?
This terminology is a legacy of the French and Spanish colonial eras, where local administration was based on ecclesiastical (church) parishes.
What is a police jury?
A police jury is a form of parish government consisting of a council that manages the administrative and legislative needs of the parish.
Which is the largest parish in Louisiana?
In terms of land area, Plaquemines Parish is the largest, covering 2,429 square miles.
Which parish has the highest population?
East Baton Rouge Parish is the most populous, with a population of 456,180.
Are there any parishes that no longer exist?
Yes. Several former parishes existed, such as Attakapas Parish (1807–1811) and Biloxi Parish (formed in 1811 but transferred to the Mississippi Territory in 1812).