County Maps US

Lafayette Parish, Louisiana

A parish in Louisiana, ranked 5 of 64 by population.

ParishFIPS 22055

Within Louisiana
Lafayette Parish, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Lafayette, the county seat, located via the 2025 Census Gazetteer.

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Population
257,949
+15,773 (+6.5%) since 2020
Land area
268.8
square miles. A further 0.2% of the total area is water
Population density
960
people per square mile, computed rather than published
County seat
Lafayette
Seat of county government.
Established
1823
202 years ago
Largest city
Lafayette city
Population 123,311.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Lafayette Parish with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Lafayette Parish, Louisiana from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 765 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Lafayette Parish ranks

Position among the 64 parishes of Louisiana, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn LouisianaNationally
Population257,9495th of 64286th of 3,144
Land area268.8 sq mi60th of 642,865th of 3,144
Population density960 per sq mi4th of 64169th of 3,144
Median household income$67,45113th of 641,388th of 3,143

Full data for Lafayette Parish

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population257,949Vintage 2025 Population Estimates
Population in 2020242,176Vintage 2025 Population Estimates
2020 estimates base?241,770Vintage 2025 Population Estimates
Land area268.8 sq mi2025 Gazetteer Files
Water area0.44 sq mi2025 Gazetteer Files
Total area269.3 sq mi2025 Gazetteer Files
Population density?960 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$67,451American Community Survey 2020-2024 5-Year Estimates
Median home value$242,900American Community Survey 2020-2024 5-Year Estimates
Median age36.5American Community Survey 2020-2024 5-Year Estimates
Households100,903American Community Survey 2020-2024 5-Year Estimates
Housing units112,184American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+982
3,198 births, 2,216 deaths
Net migration
+2,275
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Lafayette Parish

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
St. Martin ParishLouisiana35 mi51,106
Vermilion ParishLouisiana25 mi57,671
Acadia ParishLouisiana19 mi57,032
St. Landry ParishLouisiana15 mi80,765
Iberia ParishLouisiana2.8 mi66,846

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 64 parishes of Louisiana

Open the interactive Louisiana county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.