Louisiana Population By County in 2021
Updated on June 16, 2025.
Based on the US Census Vintage data estimates, in 2021, the population of Louisiana was 4,627,971. Among all Louisiana counties, East Baton Rouge had the highest population (453,685), followed by Jefferson (434,206), and Orleans (377,547). Tensas was the least populated county (4,026).
Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.
You can see similar information for other states and by state for the United States.
Related Topics: Louisiana Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
Louisiana Population By County in 2021
Louisiana Population By County in 2021
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| County | Population | % of State Population |
|---|---|---|
| Acadia | 57228 | 1.24 |
| Allen | 22594 | 0.49 |
| Ascension | 128592 | 2.78 |
| Assumption | 20701 | 0.45 |
| Avoyelles | 39261 | 0.85 |
| Beauregard | 36678 | 0.79 |
| Bienville | 12787 | 0.28 |
| Bossier | 129381 | 2.80 |
| Caddo | 232645 | 5.03 |
| Calcasieu | 204947 | 4.43 |
| Caldwell | 9580 | 0.21 |
| Cameron | 5095 | 0.11 |
| Catahoula | 8725 | 0.19 |
| Claiborne | 14051 | 0.30 |
| Concordia | 18354 | 0.40 |
| De Soto | 26960 | 0.58 |
| East Baton Rouge | 453685 | 9.80 |
| East Carroll | 7227 | 0.16 |
| East Feliciana | 19361 | 0.42 |
| Evangeline | 32223 | 0.70 |
| Franklin | 19613 | 0.42 |
| Grant | 22264 | 0.48 |
| Iberia | 69342 | 1.50 |
| Iberville | 29749 | 0.64 |
| Jackson | 14901 | 0.32 |
| Jefferson | 434206 | 9.38 |
| Jefferson Davis | 32381 | 0.70 |
| Lafayette | 244933 | 5.29 |
| Lafourche | 97607 | 2.11 |
| LaSalle | 14850 | 0.32 |
| Lincoln | 48132 | 1.04 |
| Livingston | 146143 | 3.16 |
| Madison | 9794 | 0.21 |
| Morehouse | 25018 | 0.54 |
| Natchitoches | 36989 | 0.80 |
| Orleans | 377547 | 8.16 |
| Ouachita | 158889 | 3.43 |
| Plaquemines | 23312 | 0.50 |
| Pointe Coupee | 20352 | 0.44 |
| Rapides | 128646 | 2.78 |
| Red River | 7510 | 0.16 |
| Richland | 19863 | 0.43 |
| Sabine | 22109 | 0.48 |
| St. Bernard | 44333 | 0.96 |
| St. Charles | 52480 | 1.13 |
| St. Helena | 10906 | 0.24 |
| St. James | 19796 | 0.43 |
| St. John the Baptist | 42107 | 0.91 |
| St. Landry | 82199 | 1.78 |
| St. Martin | 51550 | 1.11 |
| St. Mary | 48240 | 1.04 |
| St. Tammany | 270188 | 5.84 |
| Tangipahoa | 135487 | 2.93 |
| Tensas | 4026 | 0.09 |
| Terrebonne | 108973 | 2.36 |
| Union | 21013 | 0.45 |
| Vermilion | 56882 | 1.23 |
| Vernon | 48032 | 1.04 |
| Washington | 45202 | 0.98 |
| Webster | 35949 | 0.78 |
| West Baton Rouge | 27802 | 0.60 |
| West Carroll | 9582 | 0.21 |
| West Feliciana | 15503 | 0.34 |
| Winn | 13496 | 0.29 |