Louisiana statistical areas
# Louisiana statistical areas

The U.S. State of Louisiana currently has 25 statistical areas that have been delineated by the Office of Management and Budget (OMB). On March 6, 2020, the OMB delineated six combined statistical areas, nine metropolitan statistical areas, and ten micropolitan statistical areas in Louisiana.

## Statistical areas

The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico. These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (commonly referred to as a CBSA) as "a statistical geographic entity consisting of the county or counties (or county-equivalents) associated with at least one core of at least 10,000 population, plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core." The OMB further divides core-based statistical areas into metropolitan statistical areas (MSAs) that have "a population of at least 50,000" and micropolitan statistical areas (μSAs) that have "a population of at least 10,000, but less than 50,000."

The OMB defines a combined statistical area (CSA) as "a geographic entity consisting of two or more adjacent core-based statistical areas with employment interchange measures of at least 15%." The primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area.

## Table

The table below describes the 25 United States statistical areas and 64 parishes of the State of Louisiana with the following information:

* The combined statistical area (CSA) as designated by the OMB.
* The CSA population according to 2019 US Census Bureau population estimates.
* The core based statistical area (CBSA) as designated by the OMB.
* The CBSA population according to 2019 US Census Bureau population estimates
* The county name
* The county population according to 2019 US Census Bureau population estimates

The 25 United States statistical areas and 64 parishes of the State of Louisiana :

| Combined Statistical Area | 2019 Population | Core Based Statistical Area | 2019 Population | Parish/County | 2019 Population |
| - | - | - | - | - | - |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | Jefferson Parish, Louisiana | 432,493 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | Orleans Parish, Louisiana | 390,144 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | St. Tammany Parish, Louisiana | 260,419 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | St. Charles Parish, Louisiana | 53,100 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | St. Bernard Parish, Louisiana | 47,244 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | St. John the Baptist Parish, Louisiana | 42,837 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | Plaquemines Parish, Louisiana | 23,197 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | New Orleans-Metairie, LA MSA | 1,270,530 | St. James Parish, Louisiana | 21,096 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | Hammond, LA MSA | 134,758 | Tangipahoa Parish, Louisiana | 134,758 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | Picayune, MS μSA | 55,535 | Pearl River County, Mississippi | 55,535 |
| New Orleans-Metairie-Hammond, LA-MS CSA | 1,507,017 1,451,482 | Bogalusa, LA μSA | 46,194 | Washington Parish, Louisiana | 46,194 |
| none | none | Baton Rouge, LA MSA | 854,884 | East Baton Rouge Parish, Louisiana | 440,059 |
| none | none | Baton Rouge, LA MSA | 854,884 | Livingston Parish, Louisiana | 140,789 |
| none | none | Baton Rouge, LA MSA | 854,884 | Ascension Parish, Louisiana | 126,604 |
| none | none | Baton Rouge, LA MSA | 854,884 | Iberville Parish, Louisiana | 32,511 |
| none | none | Baton Rouge, LA MSA | 854,884 | West Baton Rouge Parish, Louisiana | 26,465 |
| none | none | Baton Rouge, LA MSA | 854,884 | Assumption Parish, Louisiana | 21,891 |
| none | none | Baton Rouge, LA MSA | 854,884 | Pointe Coupee Parish, Louisiana | 21,730 |
| none | none | Baton Rouge, LA MSA | 854,884 | East Feliciana Parish, Louisiana | 19,135 |
| none | none | Baton Rouge, LA MSA | 854,884 | West Feliciana Parish, Louisiana | 15,568 |
| none | none | Baton Rouge, LA MSA | 854,884 | St. Helena Parish, Louisiana | 10,132 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Lafayette, LA MSA | 489,207 | Lafayette Parish, Louisiana | 244,390 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Lafayette, LA MSA | 489,207 | Iberia Parish, Louisiana | 69,830 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Lafayette, LA MSA | 489,207 | Acadia Parish, Louisiana | 62,045 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Lafayette, LA MSA | 489,207 | Vermilion Parish, Louisiana | 59,511 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Lafayette, LA MSA | 489,207 | St. Martin Parish, Louisiana | 53,431 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Opelousas, LA μSA | 82,124 | St. Landry Parish, Louisiana | 82,124 |
| Lafayette-Opelousas-Morgan City, LA CSA | 620,679 | Morgan City, LA μSA | 49,348 | St. Mary Parish, Louisiana | 49,348 |
| Shreveport-Bossier City-Minden, LA CSA | 433,046 | Shreveport-Bossier City, LA MSA | 394,706 | Caddo Parish, Louisiana | 240,204 |
| Shreveport-Bossier City-Minden, LA CSA | 433,046 | Shreveport-Bossier City, LA MSA | 394,706 | Bossier Parish, Louisiana | 127,039 |
| Shreveport-Bossier City-Minden, LA CSA | 433,046 | Shreveport-Bossier City, LA MSA | 394,706 | De Soto Parish, Louisiana | 27,463 |
| Shreveport-Bossier City-Minden, LA CSA | 433,046 | Minden, LA μSA | 38,340 | Webster Parish, Louisiana | 38,340 |
| Monroe-Ruston, LA CSA | 247,003 | Monroe, LA MSA | 200,261 | Ouachita Parish, Louisiana | 153,279 |
| Monroe-Ruston, LA CSA | 247,003 | Monroe, LA MSA | 200,261 | Morehouse Parish, Louisiana | 24,874 |
| Monroe-Ruston, LA CSA | 247,003 | Monroe, LA MSA | 200,261 | Union Parish, Louisiana | 22,108 |
| Monroe-Ruston, LA CSA | 247,003 | Ruston, LA μSA | 46,742 | Lincoln Parish, Louisiana | 46,742 |
| Lake Charles-Jennings, LA CSA | 241,777 | Lake Charles, LA MSA | 210,409 | Calcasieu Parish, Louisiana | 203,436 |
| Lake Charles-Jennings, LA CSA | 241,777 | Lake Charles, LA MSA | 210,409 | Cameron Parish, Louisiana | 6,973 |
| Lake Charles-Jennings, LA CSA | 241,777 | Jennings, LA μSA | 31,368 | Jefferson Davis Parish, Louisiana | 31,368 |
| none | none | Houma-Thibodaux, LA MSA | 208,075 | Terrebonne Parish, Louisiana | 110,461 |
| none | none | Houma-Thibodaux, LA MSA | 208,075 | Lafourche Parish, Louisiana | 97,614 |
| none | none | Alexandria, LA MSA | 152,037 | Rapides Parish, Louisiana | 129,648 |
| none | none | Alexandria, LA MSA | 152,037 | Grant Parish, Louisiana | 22,389 |
| DeRidder-Fort Polk South, LA CSA | 84,926 | Fort Polk South, LA μSA | 47,429 | Vernon Parish, Louisiana | 47,429 |
| DeRidder-Fort Polk South, LA CSA | 84,926 | De Ridder, LA μSA | 37,497 | Beauregard Parish, Louisiana | 37,497 |
| none | none | Natchitoches, LA μSA | 38,158 | Natchitoches Parish, Louisiana | 38,158 |
| none | none | Natchez, MS-LA μSA | 49,952 19,259 | Adams County, Mississippi | 30,693 |
| none | none | Natchez, MS-LA μSA | 49,952 19,259 | Concordia Parish, Louisiana | 19,259 |
| none | none | none | none | Avoyelles Parish, Louisiana | 40,144 |
| none | none | none | none | Evangeline Parish, Louisiana | 33,395 |
| none | none | none | none | Allen Parish, Louisiana | 25,627 |
| none | none | none | none | Sabine Parish, Louisiana | 23,884 |
| none | none | none | none | Richland Parish, Louisiana | 20,122 |
| none | none | none | none | Franklin Parish, Louisiana | 20,015 |
| none | none | none | none | Jackson Parish, Louisiana | 15,744 |
| none | none | none | none | Claiborne Parish, Louisiana | 15,670 |
| none | none | none | none | La Salle Parish, Louisiana | 14,892 |
| none | none | none | none | Winn Parish, Louisiana | 13,904 |
| none | none | none | none | Bienville Parish, Louisiana | 13,241 |
| none | none | none | none | Madison Parish, Louisiana | 10,951 |
| none | none | none | none | West Carroll Parish, Louisiana | 10,830 |
| none | none | none | none | Caldwell Parish, Louisiana | 9,918 |
| none | none | none | none | Catahoula Parish, Louisiana | 9,494 |
| none | none | none | none | Red River Parish, Louisiana | 8,442 |
| none | none | none | none | East Carroll Parish, Louisiana | 6,861 |
| none | none | none | none | Tensas Parish, Louisiana | 4,334 |
| State of Louisiana | State of Louisiana | State of Louisiana | State of Louisiana | State of Louisiana | 4,648,794 |
