RANKING · 2020 CENSUS · 64 SHOWN OF 64

Largest by population, Louisiana counties · 2020

The most populous Louisiana counties as of the 2020 population estimates. This list covers the 64 counties in Louisiana that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01East Baton Rouge Parish, LALA456,781+11%

02Jefferson Parish, LALA440,781−3%

03Orleans Parish, LALA383,997−21%

04St. Tammany Parish, LALA264,570+38%

05Lafayette Parish, LALA241,753+27%

06Caddo Parish, LALA237,848−6%

07Calcasieu Parish, LALA216,785+18%

08Ouachita Parish, LALA160,368+9%

09Livingston Parish, LALA142,282+55%

10Tangipahoa Parish, LALA133,157+32%

11Rapides Parish, LALA130,023+3%

12Bossier Parish, LALA128,746+31%

13Ascension Parish, LALA126,500+65%

14Terrebonne Parish, LALA109,580+5%

15Lafourche Parish, LALA97,557+8%

16St. Landry Parish, LALA82,540−6%

17Iberia Parish, LALA69,929−5%

18Acadia Parish, LALA57,576−2%

19Vermilion Parish, LALA57,359+7%

20St. Charles Parish, LALA52,549+9%

21St. Martin Parish, LALA51,767+7%

22St. Mary Parish, LALA49,406−8%

23Vernon Parish, LALA48,750−7%

24Lincoln Parish, LALA48,396+14%

25Washington Parish, LALA45,463+3%

26St. Bernard Parish, LALA43,764−35%

27St. John the Baptist Parish, LALA42,477−1%

28Avoyelles Parish, LALA39,693−4%

29Natchitoches Parish, LALA37,515−4%

30Webster Parish, LALA36,967−12%

31Beauregard Parish, LALA36,549+11%

32Evangeline Parish, LALA32,350−9%

33Jefferson Davis Parish, LALA32,250+3%

34Iberville Parish, LALA30,241−9%

35West Baton Rouge Parish, LALA27,199+26%

36De Soto Parish, LALA26,812+5%

37Morehouse Parish, LALA25,629−17%

38Plaquemines Parish, LALA23,515−12%

39Allen Parish, LALA22,750−11%

40Grant Parish, LALA22,169+19%

41Sabine Parish, LALA22,155−6%

42Union Parish, LALA21,107−7%

43Assumption Parish, LALA21,039−10%

44Pointe Coupee Parish, LALA20,758−9%

45St. James Parish, LALA20,192−5%

46Richland Parish, LALA20,043−4%

47Franklin Parish, LALA19,774−7%

48East Feliciana Parish, LALA19,539−9%

49Concordia Parish, LALA18,687−8%

50West Feliciana Parish, LALA15,310+1%

51Jackson Parish, LALA15,031−2%

52LaSalle Parish, LALA14,791+4%

53Claiborne Parish, LALA14,170−16%

54Winn Parish, LALA13,755−19%

55Bienville Parish, LALA12,981−18%

56St. Helena Parish, LALA10,920+4%

57Madison Parish, LALA10,017−27%

58West Carroll Parish, LALA9,751−21%

59Caldwell Parish, LALA9,645−9%

60Catahoula Parish, LALA8,906−18%

61Red River Parish, LALA7,620−21%

62East Carroll Parish, LALA7,459−21%

63Cameron Parish, LALA5,617−44%

64Tensas Parish, LALA4,147−37%

SHOWING 1–64 OF 64

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