Census ACS · 64 counties

Largest Counties in Louisiana

Louisiana has 64 counties with Census data available. The largest is East Baton Rouge Parish with a population of 452,821. County-level data is important because counties are the primary unit of local government in most states, responsible for courts, elections, public health, and infrastructure. Population distribution across counties reveals where growth is concentrated and where rural decline may be occurring.

Source: Census ACS 5-Year Estimates

#	County	Population	Median Income
1	Winn Parish	13,506	$46,368
2	West Feliciana Parish	15,381	$74,277
3	West Carroll Parish	9,622	$48,514
4	West Baton Rouge Parish	27,666	$87,320
5	Webster Parish	36,189	$37,396
6	Washington Parish	45,238	$42,776
7	Vernon Parish	47,764	$58,281
8	Vermilion Parish	57,031	$57,537
9	Union Parish	20,914	$45,743
10	Terrebonne Parish	107,362	$64,819
11	Tensas Parish	3,992	$36,074
12	Tangipahoa Parish	135,218	$57,256
13	St. Tammany Parish	269,331	$79,277
14	St. Mary Parish	48,455	$51,768
15	St. Martin Parish	51,559	$53,394
16	St. Landry Parish	82,128	$45,637
17	St. John the Baptist Parish	41,342	$67,418
18	St. James Parish	19,797	$64,536
19	St. Helena Parish	10,849	$50,193
20	St. Charles Parish	51,863	$82,172
21	St. Bernard Parish	44,172	$57,638
22	Sabine Parish	22,085	$52,047
23	Richland Parish	19,908	$52,960
24	Red River Parish	7,529	$44,539
25	Rapides Parish	128,470	$55,946
26	Pointe Coupee Parish	20,438	$59,351
27	Plaquemines Parish	23,070	$82,874
28	Ouachita Parish	158,916	$51,241
29	Orleans Parish	376,035	$55,339
30	Natchitoches Parish	37,047	$46,798
31	Morehouse Parish	24,967	$36,981
32	Madison Parish	9,757	$37,267
33	Livingston Parish	145,583	$78,617
34	Lincoln Parish	48,160	$38,035
35	LaSalle Parish	14,804	$67,077
36	Lafourche Parish	96,670	$63,439
37	Lafayette Parish	245,075	$67,660
38	Jefferson Parish	432,484	$65,246
39	Jefferson Davis Parish	32,083	$56,500
40	Jackson Parish	14,939	$43,345
41	Iberville Parish	29,950	$57,459
42	Iberia Parish	69,194	$57,811
43	Grant Parish	22,123	$61,112
44	Franklin Parish	19,590	$44,103
45	Evangeline Parish	32,162	$42,273
46	East Feliciana Parish	19,378	$72,899
47	East Carroll Parish	7,195	$28,321
48	East Baton Rouge Parish	452,821	$63,075
49	De Soto Parish	26,897	$46,077
50	Concordia Parish	18,325	$37,349
51	Claiborne Parish	14,019	$31,784
52	Catahoula Parish	8,738	$47,753
53	Cameron Parish	5,222	$72,500
54	Caldwell Parish	9,563	$44,957
55	Calcasieu Parish	208,668	$67,849
56	Caddo Parish	232,973	$50,067
57	Bossier Parish	129,134	$66,336
58	Bienville Parish	12,769	$34,992
59	Beauregard Parish	36,646	$64,995
60	Avoyelles Parish	39,176	$39,439
61	Assumption Parish	20,720	$52,546
62	Ascension Parish	128,593	$92,266
63	Allen Parish	22,552	$51,138
64	Acadia Parish	57,218	$45,266

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Frequently Asked Questions

East Baton Rouge Parish is the #1 ranked county in Louisiana by population, with a value of 452,821 according to latest Census ACS data.

Louisiana has 64 counties tracked in latest Census ACS data.

All data comes from the American Community Survey (ACS) 5-Year estimates by the US Census Bureau.

Sources: US Census Bureau ACS 5-Year Estimates

Data from the American Community Survey 5-Year estimates. Covers all counties in Louisiana.

Source: U.S. Census Bureau ACS, 2026.