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Grand Coteau, LA Profile: Facts & Data

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Grand Coteau, Louisiana - Basic Facts

The Town of Grand Coteau had a population of 746 as of July 1, 2025.

The primary coordinate point for Grand Coteau is located at latitude 30.4199 and longitude -92.0465 in St. Landry Parish. The formal boundaries for the Town of Grand Coteau encompass a land area of 2.42 sq. miles and a water area of 0 sq. miles. St. Landry Parish is in the Central time zone (GMT -6).

The Town of Grand Coteau has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Town of Grand Coteau is located within Parish Governing Authority District 8, a minor civil division (MCD) of St. Landry Parish.


Jump to... (On This Page!)
  1. Grand Coteau 2025 Demographic Data
  2. Growth Rates for Grand Coteau (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Louisiana Research Tools (Easy Tools & Current Data)
  3. Louisiana Data Comparison Tool - 2025 Demographics
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Grand Coteau, LA Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 746 (100%)
Population in Households 712 (95.4%)
Population in Families 559 (74.9%)
Population in Group Quarters1 34 ( 4.6%)
Population Density 308
Diversity Index2 57
 
 

INCOME

Median Household Income $50,648
Average Household Income $53,155
% of Income for Mortgage4 20%
Per Capita Income $22,946
Wealth Index5 33
Socioeconomic Status Index6 Low (43.6)
 

HOUSING

Total HU (Housing Units) 380 (100%)
Owner Occupied HU 237 (62.4%)
Renter Occupied HU 84 (22.1%)
Vacant Housing Units 59 (15.5%)
Median Home Value $163,750
Average Home Value $223,175
Housing Affordability Index3 123
 

HOUSEHOLDS

Total Households 321
Average Household Size 2.22
Family Households 187
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population -0.75% -1.15%
Households -0.47% -0.25%
Families   0.53%
Median Household Income   -1.90%
Per Capita Income   2.05%
Owner Occupied HU   0.00%

Grand Coteau, LA - Peer Comparisons by Rank and Percentile

The table below compares Grand Coteau to the other 489 incorporated cities, towns and CDPs in Louisiana by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 301 39th
Population Density # 322 34th
Median Household Income # 259 47th
Housing Affordability Index # 313 64th
Per Capita Income # 394 20th
Diversity Index # 161 67th

Additional comparisons and rankings can be made with a VERY EASY TO USE Louisiana Census Data Comparison Tool.

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