Lafourche Parish area

Population and density of Lafourche Parish

The Census Bureau estimates that 95,505 people lived in Lafourche Parish on July 1, 2025. That ranks #654 of 3,222 county equivalents nationally and #15 of 64 in Louisiana. Since the April 1, 2020 estimates base of 97,539, the population has declined by 2,034 (−2.1%), compared with −0.9% for Louisiana as a whole.

With 1,069.7 square miles of land, that is 89 people per square mile (34 per km²), placing Lafourche Parish #1,080 nationally for density and #20 in Louisiana. The median county equivalent has 47 people per square mile; the Louisiana median is 48. Put another way, there are about 7.2 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Lafourche Parish

3 incorporated places lie at least partly in Lafourche Parish. Together they are home to 19,542 people (20.5%); the other 75,963 (79.5%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Thibodaux city, with 15,573 residents in the county.

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Lafourche Parish. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Lafourche Parish is a central county of the Houma-Bayou Cane-Thibodaux, LA Metropolitan Statistical Area. Its 2 county equivalents have 199,668 residents on 2,299.6 square miles of land; Lafourche Parish accounts for 46.5% of the land and 47.8% of the residents. By combined land it ranks #141 of 393 metropolitan areas, and #238 by population.

ZIP codes

15 ZIP Code Tabulation Areas have land in Lafourche Parish; 11 of them have most of their land inside the county, and the others mainly cover neighboring areas.

700307030170310703437034570354703557035770359703647037370374703757037770394

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Lafourche Parish

Lafourche Parish shares a land border with 6 county equivalents. It has more land than 5 of them. The largest neighbor is Terrebonne Parish (1,229.9 mi²) and the smallest is St. John the Baptist Parish (214.5 mi²). Together with its neighbors, Lafourche Parish forms a block of 3,674.5 mi² of land, of which it holds 29.1%.

How big is Lafourche Parish compared with U.S. states?

Lafourche Parish has more land than 1 of the 50 states. It is about 1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.8 times as much land (1,948.6 mi²). Louisiana’s county land could hold about 40 areas the size of Lafourche Parish.

Another way to picture it: the same land area would fill a square about 32.7 miles (52.6 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Lafourche Parish?

Lafourche Parish has more land than 2,620 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Lafourche Parish at #461 nationally by total area, 141 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 27.2%, compared with a national county-equivalent median of 1.2% — 26 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Lafourche Parish in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.