Louisiana Citizen Population By County in 2020 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2020, the citizen population for Louisiana was 4,551,485 and represented 97.58% of the total Louisiana population.

Among all Louisiana counties, East Baton Rouge had the highest citizen population (427.77K), followed by Jefferson (400.37K), and Orleans (380.01K).

In terms of percentages, East Carroll had the highest percentage of its population being citizens (100.00%), followed by Caldwell (99.95%), and Red River (99.94%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

You may also be interested in:
Louisiana Citizen Voting-age Population By County in 2020

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Louisiana Citizen Population By County in 2020

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County	Citizen Population	% of County Population
East Baton Rouge	427765	96.53
Jefferson	400365	92.06
Orleans	380005	97.13
St. Tammany	252740	97.79
Caddo	240300	98.79
Lafayette	236880	97.21
Calcasieu	199545	98.37
Ouachita	153290	99.10
Livingston	138115	98.29
Tangipahoa	131835	98.57
Rapides	128740	98.75
Bossier	124650	98.19
Ascension	122415	97.89
Terrebonne	109315	98.22
Lafourche	96310	98.30
St. Landry	82265	99.37
Iberia	69465	98.16
Acadia	61870	99.20
Vermilion	59105	98.86
St. Martin	53020	98.91
St. Charles	52145	98.66
St. Mary	48715	97.39
Vernon	48670	98.69
Lincoln	46000	97.62
Washington	45965	99.22
St. Bernard	45390	97.21
St. John the Baptist	42450	98.60
Avoyelles	40310	99.62
Webster	38600	99.45
Natchitoches	38335	99.56
Beauregard	36970	98.89
Iberville	32410	99.34
Evangeline	32315	96.49
Jefferson Davis	31300	99.60
De Soto	27330	99.76
West Baton Rouge	26335	99.77
Morehouse	25140	99.80
Allen	24340	95.19
Sabine	23840	99.69
Plaquemines	22940	98.43
Assumption	22085	99.33
Union	21900	98.34
Pointe Coupee	21775	99.50
Grant	21760	97.40
St. James	20990	99.29
Richland	20230	99.90
Franklin	20060	99.75
Concordia	19250	98.54
East Feliciana	19145	99.56
Claiborne	15745	99.31
Jackson	15645	98.89
West Feliciana	15160	98.19
LaSalle	14745	98.63
Winn	14060	99.26
Bienville	13315	99.44
Madison	11065	99.37
West Carroll	10890	99.59
St. Helena	10055	98.34
Caldwell	9955	99.95
Catahoula	9550	99.64
Red River	8455	99.94
East Carroll	6945	100.00
Cameron	6790	97.49
Tensas	4430	99.89