RANKING · 2025 ESTIMATES · 64 SHOWN OF 64

Most population gained, Louisiana counties

Louisiana counties that added the most residents from the 2020 census to 2025, by raw count of people rather than percentage. This list covers the 64 counties in Louisiana that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Lafayette Parish, LALA257,949+16,196−37%

02St. Tammany Parish, LALA279,108+14,538−69%

03Livingston Parish, LALA155,036+12,754−40%

04Ascension Parish, LALA135,105+8,605−53%

05Tangipahoa Parish, LALA141,346+8,189−45%

06Bossier Parish, LALA131,867+3,121−74%

07St. Bernard Parish, LALA45,642+1,878+214%

08West Baton Rouge Parish, LALA28,756+1,557−29%

09Winn Parish, LALA14,961+1,206+93%

10Jackson Parish, LALA15,834+803−361%

11De Soto Parish, LALA27,381+569+284%

12LaSalle Parish, LALA15,154+363−41%

13Vermilion Parish, LALA57,671+312−92%

14Beauregard Parish, LALA36,673+124−96%

15Lincoln Parish, LALA48,360-36−105%

16Allen Parish, LALA22,672-78−102%

17Grant Parish, LALA22,075-94−108%

18St. Helena Parish, LALA10,758-162−125%

19West Feliciana Parish, LALA15,134-176−108%

20Caldwell Parish, LALA9,344-301−140%

21Sabine Parish, LALA21,834-321−139%

22Evangeline Parish, LALA31,980-370−117%

23Tensas Parish, LALA3,700-447−8%

24Red River Parish, LALA7,165-455−294%

25Richland Parish, LALA19,582-461−231%

26Washington Parish, LALA44,937-526−171%

27Acadia Parish, LALA57,032-544−118%

28Union Parish, LALA20,561-546−126%

29West Carroll Parish, LALA9,156-595−369%

30East Baton Rouge Parish, LALA456,180-601−102%

31East Feliciana Parish, LALA18,911-628−129%

32St. Martin Parish, LALA51,106-661−114%

33Iberville Parish, LALA29,579-662−129%

34Catahoula Parish, LALA8,223-683+371%

35East Carroll Parish, LALA6,760-699+143%

36Bienville Parish, LALA12,269-712+214%

37Franklin Parish, LALA19,002-772−31%

38Jefferson Davis Parish, LALA31,471-779−209%

39Claiborne Parish, LALA13,354-816+47%

40Concordia Parish, LALA17,836-851+46%

41Cameron Parish, LALA4,718-899−223%

42Madison Parish, LALA8,844-1,173−193%

43Pointe Coupee Parish, LALA19,520-1,238−655%

44St. James Parish, LALA18,938-1,254−472%

45Plaquemines Parish, LALA22,256-1,259−207%

46Assumption Parish, LALA19,720-1,319−308%

47Natchitoches Parish, LALA36,089-1,426−160%

48Avoyelles Parish, LALA37,941-1,752−175%

49St. Landry Parish, LALA80,765-1,775−124%

50Ouachita Parish, LALA158,542-1,826−136%

51Morehouse Parish, LALA23,705-1,924+110%

52St. Charles Parish, LALA50,586-1,963−135%

53Webster Parish, LALA34,948-2,019+1178%

54Lafourche Parish, LALA95,505-2,052−150%

55St. John the Baptist Parish, LALA39,875-2,602−185%

56St. Mary Parish, LALA46,552-2,854−38%

57Iberia Parish, LALA66,846-3,083−162%

58Vernon Parish, LALA45,091-3,659−61%

59Rapides Parish, LALA125,877-4,146−21%

60Terrebonne Parish, LALA104,163-5,417−172%

61Calcasieu Parish, LALA208,466-8,319−154%

62Jefferson Parish, LALA431,398-9,383−231%

63Caddo Parish, LALA224,226-13,622−449%

64Orleans Parish, LALA362,154-21,843+78%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES