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. The median across all 64 is -661. Biggest climber in the top 100 since 2020: Allen Parish, LA, up 39 places to #16.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01▲3Lafayette Parish, LALA257,949+16,196−37%

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

03▲4Livingston Parish, LALA155,036+12,754−40%

04▲1Ascension Parish, LALA135,105+8,605−53%

05▲3Tangipahoa Parish, LALA141,346+8,189−45%

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

07▲4St. Bernard Parish, LALA45,642+1,878+214%

08▲5West Baton Rouge Parish, LALA28,756+1,557−29%

09▲30Winn Parish, LALA14,961+1,206+93%

10▲25Jackson Parish, LALA15,834+803−361%

11▲8De Soto Parish, LALA27,381+569+284%

12▲8LaSalle Parish, LALA15,154+363−41%

13▲15Vermilion Parish, LALA57,671+312−92%

14▲2Beauregard Parish, LALA36,673+124−96%

15▼1Lincoln Parish, LALA48,360-36−105%

16▲39Allen Parish, LALA22,672-78−102%

17▲4Grant Parish, LALA22,075-94−108%

18▲5St. Helena Parish, LALA10,758-162−125%

19▲6West Feliciana Parish, LALA15,134-176−108%

20▲7Caldwell Parish, LALA9,344-301−140%

21▲28Sabine Parish, LALA21,834-321−139%

22▲20Evangeline Parish, LALA31,980-370−117%

23▲10Tensas Parish, LALA3,700-447−8%

24▲13Red River Parish, LALA7,165-455−294%

25▲4Richland Parish, LALA19,582-461−231%

26▲17Washington Parish, LALA44,937-526−171%

27▲34Acadia Parish, LALA57,032-544−118%

28▲13Union Parish, LALA20,561-546−126%

29▲15West Carroll Parish, LALA9,156-595−369%

30▼24East Baton Rouge Parish, LALA456,180-601−102%

31▼1East Feliciana Parish, LALA18,911-628−129%

32▼6St. Martin Parish, LALA51,106-661−114%

33▲24Iberville Parish, LALA29,579-662−129%

34▲4Catahoula Parish, LALA8,223-683+371%

35▼11East Carroll Parish, LALA6,760-699+143%

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

37▼5Franklin Parish, LALA19,002-772−31%

38▼21Jefferson Davis Parish, LALA31,471-779−209%

39▲17Claiborne Parish, LALA13,354-816+47%

40▲10Concordia Parish, LALA17,836-851+46%

41▼7Cameron Parish, LALA4,718-899−223%

42▲6Madison Parish, LALA8,844-1,173−193%

43▲3Pointe Coupee Parish, LALA19,520-1,238−655%

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

45▼27Plaquemines Parish, LALA22,256-1,259−207%

46▲8Assumption Parish, LALA19,720-1,319−308%

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

48▲5Avoyelles Parish, LALA37,941-1,752−175%

49▼18St. Landry Parish, LALA80,765-1,775−124%

50▼38Ouachita Parish, LALA158,542-1,826−136%

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

52▼30St. Charles Parish, LALA50,586-1,963−135%

53▲9Webster Parish, LALA34,948-2,019+1178%

54▼39Lafourche Parish, LALA95,505-2,052−150%

55▲4St. John the Baptist Parish, LALA39,875-2,602−185%

56▲7St. Mary Parish, LALA46,552-2,854−38%

57▲1Iberia Parish, LALA66,846-3,083−162%

58▲2Vernon Parish, LALA45,091-3,659−61%

59▼19Rapides Parish, LALA125,877-4,146−21%

60▼9Terrebonne Parish, LALA104,163-5,417−172%

61▼58Calcasieu Parish, LALA208,466-8,319−154%

62▼52Jefferson Parish, LALA431,398-9,383−231%

63▲1Caddo Parish, LALA224,226-13,622−449%

64▼63Orleans Parish, LALA362,154-21,843+78%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES