Louisiana Citizen Population By County in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen population for Louisiana was 4,549,090 and represented 97.54% of the total Louisiana population.

Among all Louisiana counties, East Baton Rouge had the highest citizen population (429.15K), followed by Jefferson (401.20K), and Orleans (377.63K).

In terms of percentages, Madison had the highest percentage of its population being citizens (99.96%), followed by Richland (99.90%), and Tensas (99.89%).

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 2018

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

See this for other years:

Louisiana Citizen Population By County in 2018

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County	Citizen Population	% of County Population
East Baton Rouge	429145	96.63
Jefferson	401200	92.17
Orleans	377630	96.92
St. Tammany	247090	98.02
Caddo	245255	98.75
Lafayette	233560	97.28
Calcasieu	197080	98.45
Ouachita	154625	99.07
Livingston	136390	98.76
Rapides	129465	98.42
Tangipahoa	128755	98.66
Bossier	123630	98.02
Ascension	118850	98.08
Terrebonne	110470	98.12
Lafourche	96160	97.91
St. Landry	82715	99.12
Iberia	70990	97.66
Acadia	61870	98.88
Vermilion	58990	98.54
St. Martin	53090	98.77
St. Charles	51780	98.21
Vernon	50315	98.65
St. Mary	50265	97.16
Washington	45990	99.00
Lincoln	45760	96.63
St. Bernard	44365	97.09
St. John the Baptist	42450	97.71
Avoyelles	40685	99.52
Webster	39490	99.65
Natchitoches	38735	99.41
Beauregard	36205	98.46
Iberville	32825	99.61
Evangeline	32720	97.28
Jefferson Davis	31380	99.73
De Soto	27115	99.63
Morehouse	25955	99.87
West Baton Rouge	25650	99.19
Allen	24765	96.51
Sabine	23890	99.17
Plaquemines	22800	97.54
Assumption	22525	99.16
Union	22080	98.24
Pointe Coupee	21925	98.94
Grant	21690	97.05
St. James	21245	99.49
Richland	20455	99.90
Franklin	20260	99.71
Concordia	19945	99.63
East Feliciana	19415	99.56
Claiborne	16035	99.26
Jackson	15790	99.15
West Feliciana	15160	98.60
LaSalle	14670	98.13
Winn	14465	99.79
Bienville	13635	99.74
Madison	11465	99.96
West Carroll	11140	99.64
St. Helena	10385	99.76
Catahoula	9860	99.65
Caldwell	9785	97.90
Red River	8560	99.30
East Carroll	7190	99.52
Cameron	6675	97.16
Tensas	4660	99.89