Slidell, LA Profile: Facts, Map & Data


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Slidell, Louisiana - Basic Facts

The City of Slidell had a population of 28,935 as of July 1, 2017. Slidell ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Louisiana. See peer rankings below.

The primary coordinate point for Slidell is located at latitude 30.2893 and longitude -89.7833 in St. Tammany Parish. The formal boundaries for the City of Slidell (see map below) encompass a land area of 14.84 sq. miles and a water area of 0.36 sq. miles. St. Tammany Parish is in the Central time zone (GMT -6). The elevation is 3 feet.

The City of Slidell (GNIS ID: 2405470) 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 City of Slidell is located within Parish Governing Authority District 14, a minor civil division (MCD) of St. Tammany Parish.

Beneath the boundary map are tables with Slidell population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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City of Slidell, LA Boundary Map

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Boundary Maps: Parish Governing Authority District 14 | St. Tammany Parish | Louisiana Parishes

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Slidell, LA Data & Demographics (As of July 1, 2017)


Total Population 28,935
Daytime Population: Workers 21,798
Daytime Population: Residents 16,725
Total Daytime Population (TDP) 38,523
Ratio TDP/Total Population1 1.33
Population in Households 28,662
Population in Familes 23,688
Population in Group Qrtrs 273
Population Density2 1,949
Diversity Index3 51


Median Household Income $51,756
Average Household Income $67,394
Per Capita Income $25,442


Total Housing Units 11,842 (100%)
Owner Occupied HU 7,491 (63.3%)
Renter Occupied HU 3,261 (27.5%)
Vacant Housing Units 1,090 ( 9.2%)
Median Home Value $170,220
Average Home Value $181,385


Total Households 10,752
Average Household Size 2.67
Family Households 7,539
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 0.92% 1.09%
Households 0.94% 1.11%
Families 0.74% 0.94%
Median Household Income   1.69%
Per Capita Income   2.3%

Slidell, LA - Peer Comparisons by Rank and Percentile

The table below compares Slidell to the other 474 incorporated cities, towns and CDPs in Louisiana by rank and percentile using July 1, 2017 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 # 16 97th
Population Density # 59 88th
Diversity Index # 187 60th
Median Household Income # 113 76th
Per Capita Income # 126 74th

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

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