Grand Coteau, Louisiana Demographics & Population 2026

A note before these figures: with a population of 959, Grand Coteau's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Grand Coteau is a small community located in Louisiana, within St. Landry Parish. The total population is 959. It ranks as the 277th most populous out of 488 Census-designated places in Louisiana.

Age Demographics

The median age in Grand Coteau is 54.9 years. This is 44% higher than the state median of 38.0 years. 12.3% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Grand Coteau is $34,730. This is 43% lower than the state median of $60,756. It is also 57% lower than the national median of $80,734. The poverty rate stands at 45.7%. This is 141% higher than the state poverty rate of 18.9%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 5.5%. This is 13% lower than the state rate of 6.3%. The median home value is $117,500. Housing costs are 46% lower than the state median of $216,500. The home-value-to-income ratio is 3.4x. 34.4% of occupied housing units are owner-occupied. This homeownership rate is 49% lower than the state average of 67.4%.

Race & Ethnicity

The largest racial or ethnic group in Grand Coteau is Black or African American, making up 69.9% of the population. White (non-Hispanic) residents account for 28.9%. The Black or African American population is significantly higher than the state average (69.9% vs 30.5%). The Hispanic or Latino population (0.4%) is well below the state average of 7.2%. The Asian population (0.2%) is well below the state average of 1.7%.

Education

20.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 24% lower than the state rate of 27.0%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 60.8%.

Data Sources & Methodology

All demographic data for Grand Coteau, Louisiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Louisiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 488 Census-designated places in Louisiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.