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Cecilia, LA Profile: Facts & Data

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Cecilia, Louisiana - Basic Facts

The Cecilia CDP(1) had a population of 1,872 as of July 1, 2025.

The primary coordinate point for Cecilia is located at latitude 30.3371 and longitude -91.8532 in St. Martin Parish. The formal boundaries for the Cecilia Census Designated Place encompass a land area of 2.12 sq. miles and a water area of 0.02 sq. miles. St. Martin Parish is in the Central time zone (GMT -6).

The Cecilia Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Cecilia Census Designated Place is located within Parish Governing Authority District 9, a minor civil division (MCD) of St. Martin Parish.


  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Jump to... (On This Page!)
  1. Cecilia 2025 Demographic Data
  2. Growth Rates for Cecilia (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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Cecilia, LA Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 1,872 (100%)
Population in Households 1,872 (100.0%)
Population in Families 1,595 (85.2%)
Population in Group Quarters1 0
Population Density 884
Diversity Index2 48
 
 

INCOME

Median Household Income $64,016
Average Household Income $80,204
% of Income for Mortgage4 18%
Per Capita Income $31,405
Wealth Index5 58
Socioeconomic Status Index6 Low (38.6)
 

HOUSING

Total HU (Housing Units) 820 (100%)
Owner Occupied HU 631 (77.0%)
Renter Occupied HU 102 (12.4%)
Vacant Housing Units 87 (10.6%)
Median Home Value $186,085
Average Home Value $195,606
Housing Affordability Index3 128
 

HOUSEHOLDS

Total Households 733
Average Household Size 2.55
Family Households 505
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 0.68% 0.01%
Households 0.96% 0.41%
Families   0.00%
Median Household Income   1.26%
Per Capita Income   2.22%
Owner Occupied HU   0.53%

Cecilia, LA - Peer Comparisons by Rank and Percentile

The table below compares Cecilia 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 # 200 59th
Population Density # 152 69th
Median Household Income # 137 72nd
Housing Affordability Index # 343 70th
Per Capita Income # 201 59th
Diversity Index # 288 41st

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

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