Louisiana Land area in square miles, 2010 by County

Data Item State
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Land area in square miles, 2010 - (Square Miles)
County Value
Acadia Parish 655.12
Allen Parish 761.85
Ascension Parish 289.98
Assumption Parish 338.66
Avoyelles Parish 832.43
Beauregard Parish 1,157.34
Bienville Parish 811.27
Bossier Parish 840.06
Caddo Parish 878.54
Calcasieu Parish 1,063.66
Caldwell Parish 529.43
Cameron Parish 1,284.89
Catahoula Parish 708.03
Claiborne Parish 754.88
Concordia Parish 696.92
De Soto Parish 875.58
East Baton Rouge Parish 455.37
East Carroll Parish 420.70
East Feliciana Parish 453.41
Evangeline Parish 662.38
Franklin Parish 624.59
Grant Parish 643.03
Iberia Parish 574.11
Iberville Parish 618.63
Jackson Parish 569.18
Jefferson Davis Parish 651.33
Jefferson Parish 295.63
La Salle Parish 624.68
Lafayette Parish 268.72
Lafourche Parish 1,068.21
Lincoln Parish 471.74
Livingston Parish 648.17
Madison Parish 624.44
Morehouse Parish 794.93
Natchitoches Parish 1,252.25
Orleans Parish 169.42
Ouachita Parish 610.41
Plaquemines Parish 779.91
Pointe Coupee Parish 557.35
Rapides Parish 1,317.96
Red River Parish 389.09
Richland Parish 559.04
Sabine Parish 866.66
St. Bernard Parish 377.52
St. Charles Parish 279.08
St. Helena Parish 408.40
St. James Parish 241.54
St. John the Baptist Parish 213.07
St. Landry Parish 923.88
St. Martin Parish 737.65
St. Mary Parish 555.38
St. Tammany Parish 845.55
Tangipahoa Parish 791.28
Tensas Parish 602.78
Terrebonne Parish 1,231.82
Union Parish 876.99
Vermilion Parish 1,173.20
Vernon Parish 1,327.91
Washington Parish 669.53
Webster Parish 593.03
West Baton Rouge Parish 192.39
West Carroll Parish 359.65
West Feliciana Parish 403.21
Winn Parish 950.09

Value for Louisiana (Square Miles): 43,203.90

Source: U.S. Census Bureau, data file from Geography Division based on the TIGER/Geographic Identification Code Scheme (TIGER/GICS) computer file. Land area updated every 10 years. http://www.census.gov/geo/www/tiger/index.html or http://factfinder2.census.gov.

Source: U.S. Census Bureau, Census of Population and Housing. Land area is based on current information in the TIGER® data base, calculated for use with Census 2010.


Land area is the size, in square units (metric and nonmetric) of all areas designated as land in the Census Bureau's national geographic (TIGER®) database.

Persons per square mile is the average number of inhabitants per square mile of land area. These figures are derived by dividing the total number of residents by the number of square miles of land area in the specified geographic area. The land area measurement is from the Census 2010. To determine population per square kilometer, multiply the population per square mile by .3861.

Scope and Methodology:

TIGER is an acronym for the digital (computer-readable) geographic database that automates the mapping and related geographic activities required to support the Census Bureau's census and survey programs. The Census Bureau developed the Topologically Integrated Geographic Encoding and Referencing (TIGER) System to automate the geographic support processes needed to meet the major geographic needs of the 1990 census. Land area was calculated from the specific set of boundaries recorded for the entity (in this case, counties, which were then aggregated to metropolitan totals) in the Census Bureau's geographic database.

Land area measurements are originally recorded as whole square meters (to convert square meters to square kilometers, divide by 1,000,000; to convert square kilometers to square miles, divide by 2.58999; to convert square meters to square miles, divide by 2,589,988).

Land area measurements may disagree with the information displayed on U.S. Census Bureau maps and in the TIGER® database because, for area measurement purposes, features identified as "intermittent water" and "glacier" are reported as land area.

The accuracy of any area measurement data is limited by the accuracy inherent in (1) the location and shape of the various boundary information in the TIGER® database and (2) rounding affecting the last digit in all operations that compute and/or sum the area measurements. Identification of land is for statistical purposes and does not necessarily reflect legal definitions.

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