RANKING · 2020 CENSUS · 64 SHOWN OF 64

Most population gained, Louisiana counties · 2020

Louisiana counties that added the most residents from the 2010 census to 2020, 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

01Orleans Parish, LALA362,154+40,168−428%

02St. Tammany Parish, LALA279,108+30,830−34%

03Calcasieu Parish, LALA208,466+24,017+56%

04Lafayette Parish, LALA257,949+20,175−22%

05Ascension Parish, LALA135,105+19,285+5%

06East Baton Rouge Parish, LALA456,180+16,610−49%

07Livingston Parish, LALA155,036+14,256−33%

08Tangipahoa Parish, LALA141,346+12,060−19%

09Bossier Parish, LALA131,867+11,767−4%

10Jefferson Parish, LALA431,398+8,229+15%

11St. Bernard Parish, LALA45,642+7,867+1216%

12Ouachita Parish, LALA158,542+6,648+31%

13West Baton Rouge Parish, LALA28,756+3,411+56%

14Lincoln Parish, LALA48,360+1,661+117%

15Lafourche Parish, LALA95,505+1,239−70%

16Beauregard Parish, LALA36,673+895−69%

17Jefferson Davis Parish, LALA31,471+656−8%

18Plaquemines Parish, LALA22,256+473−60%

19De Soto Parish, LALA27,381+156+5%

20LaSalle Parish, LALA15,154-99−116%

21Grant Parish, LALA22,075-140−112%

22St. Charles Parish, LALA50,586-231−104%

23St. Helena Parish, LALA10,758-283−143%

24East Carroll Parish, LALA6,760-300+4%

25West Feliciana Parish, LALA15,134-315−114%

26St. Martin Parish, LALA51,106-393−109%

27Caldwell Parish, LALA9,344-487−165%

28Vermilion Parish, LALA57,671-640−117%

29Richland Parish, LALA19,582-682−294%

30East Feliciana Parish, LALA18,911-728−134%

31St. Landry Parish, LALA80,765-844−111%

32Franklin Parish, LALA19,002-993−12%

33Tensas Parish, LALA3,700-1,105+128%

34Cameron Parish, LALA4,718-1,222−267%

35Jackson Parish, LALA15,834-1,243+304%

36Bienville Parish, LALA12,269-1,372+504%

37Red River Parish, LALA7,165-1,471−726%

38Catahoula Parish, LALA8,223-1,501+935%

39Winn Parish, LALA14,961-1,558−349%

40Rapides Parish, LALA125,877-1,590−70%

41Union Parish, LALA20,561-1,614−176%

42Evangeline Parish, LALA31,980-1,634−176%

43Washington Parish, LALA44,937-1,705−330%

44West Carroll Parish, LALA9,156-1,853−938%

45St. James Parish, LALA18,938-1,910−667%

46Pointe Coupee Parish, LALA19,520-2,044−1017%

47Natchitoches Parish, LALA36,089-2,051−186%

48Madison Parish, LALA8,844-2,076−264%

49Sabine Parish, LALA21,834-2,078−356%

50Concordia Parish, LALA17,836-2,135+267%

51Terrebonne Parish, LALA104,163-2,280−130%

52Morehouse Parish, LALA23,705-2,350+156%

53Avoyelles Parish, LALA37,941-2,380−202%

54Assumption Parish, LALA19,720-2,382−475%

55Allen Parish, LALA22,672-3,014−172%

56Claiborne Parish, LALA13,354-3,025+446%

57Iberville Parish, LALA29,579-3,146−239%

58Iberia Parish, LALA66,846-3,311−167%

59St. John the Baptist Parish, LALA39,875-3,447−213%

60Vernon Parish, LALA45,091-3,584−62%

61Acadia Parish, LALA57,032-4,197−241%

62Webster Parish, LALA34,948-4,240+2584%

63St. Mary Parish, LALA46,552-5,244+14%

64Caddo Parish, LALA224,226-17,121−538%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS