Louisiana Population By County in 2021 (ACS-5Yrs)
Updated on February 28, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the total population of Louisiana was 4.66M. Among all Louisiana counties, East Baton Rouge was the most populated county (455.45K), followed by Jefferson (439.40K), and then Orleans (383.97K).
On the other hand, the least populated counties were: Tensas (4.27K), Cameron (5.65K), and East Carroll (7.50K).
The chart and table below shows the population of each county and the percentage of Louisiana population in each county.
You can see similar information for other states and by state for the United States.
Related Topics: Louisiana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Louisiana Population By County in 2021
Louisiana Population By County in 2021
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| County | Population | % of State Population |
|---|---|---|
| Acadia | 58200 | 1.25 |
| Allen | 23085 | 0.50 |
| Ascension | 125289 | 2.69 |
| Assumption | 21366 | 0.46 |
| Avoyelles | 39880 | 0.86 |
| Beauregard | 36417 | 0.78 |
| Bienville | 13130 | 0.28 |
| Bossier | 128508 | 2.76 |
| Caddo | 239775 | 5.15 |
| Calcasieu | 212646 | 4.57 |
| Caldwell | 9707 | 0.21 |
| Cameron | 5650 | 0.12 |
| Catahoula | 9117 | 0.20 |
| Claiborne | 14456 | 0.31 |
| Concordia | 18989 | 0.41 |
| De Soto | 26803 | 0.58 |
| East Baton Rouge | 455447 | 9.78 |
| East Carroll | 7502 | 0.16 |
| East Feliciana | 19588 | 0.42 |
| Evangeline | 32538 | 0.70 |
| Franklin | 19964 | 0.43 |
| Grant | 22236 | 0.48 |
| Iberia | 70518 | 1.51 |
| Iberville | 30651 | 0.66 |
| Jackson | 15214 | 0.33 |
| Jefferson | 439402 | 9.44 |
| Jefferson Davis | 32270 | 0.69 |
| Lafayette | 241173 | 5.18 |
| Lafourche | 97677 | 2.10 |
| LaSalle | 14770 | 0.32 |
| Lincoln | 48415 | 1.04 |
| Livingston | 141057 | 3.03 |
| Madison | 10297 | 0.22 |
| Morehouse | 25852 | 0.56 |
| Natchitoches | 37896 | 0.81 |
| Orleans | 383974 | 8.24 |
| Ouachita | 160227 | 3.44 |
| Plaquemines | 23536 | 0.51 |
| Pointe Coupee | 20951 | 0.45 |
| Rapides | 130459 | 2.80 |
| Red River | 7787 | 0.17 |
| Richland | 20110 | 0.43 |
| Sabine | 22377 | 0.48 |
| St. Bernard | 43821 | 0.94 |
| St. Charles | 52411 | 1.13 |
| St. Helena | 10881 | 0.23 |
| St. James | 20390 | 0.44 |
| St. John the Baptist | 42704 | 0.92 |
| St. Landry | 82999 | 1.78 |
| St. Martin | 52222 | 1.12 |
| St. Mary | 49818 | 1.07 |
| St. Tammany | 262799 | 5.64 |
| Tangipahoa | 132492 | 2.85 |
| Tensas | 4269 | 0.09 |
| Terrebonne | 110100 | 2.36 |
| Union | 21272 | 0.46 |
| Vermilion | 57775 | 1.24 |
| Vernon | 49064 | 1.05 |
| Washington | 45794 | 0.98 |
| Webster | 37356 | 0.80 |
| West Baton Rouge | 27064 | 0.58 |
| West Carroll | 9959 | 0.21 |
| West Feliciana | 15334 | 0.33 |
| Winn | 13875 | 0.30 |