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The total population of Grand Coteau is estimated to be 831 with 434 males (52.23%) and 397 females (47.77%). There are 37 less females than males in Grand Coteau.
In 2022, the population of Grand Coteau was 766, a 0.65% decrease year-by-year from 2021. Previously, in 2021, Grand Coteau's population was 771, a decline of 0.13% compared to a population of 772 in 2020.
The median age in Grand Coteau, LA is 56.6, as per 2021 ACS 5-Year Estimates. Of the total population, 9.94% were under the age of 15, 17.51% aged 15 to 29, 54.08% aged 30 to 64, 15.38% aged 65 to 84, and 3.08% were 85 years of age and older.
Racial distribution of Grand Coteau population: 35.98% are White, 63.55% are Black or African American, 0.24% are some other race and 0.24% are multiracial.