Slidell city, Louisiana Demographics & Population 2026

Population Overview

Slidell city is a mid-sized community located in Louisiana. The total population is 28,664. It ranks as the 15th most populous out of 487 cities and towns in Louisiana.

Age Demographics

The median age in Slidell city is 38.6 years. This is 2% higher than the state median of 37.8 years.

Economy, Income & Housing

The median household income in Slidell city is $66,657. This is 11% higher than the state median of $60,023. Compared to the national median of $78,538, household income here is 15% lower. The poverty rate stands at 15.4%. This is 18% lower than the state poverty rate of 18.9%. The unemployment rate is 4.3%. This is 31% lower than the state rate of 6.3%. The median home value is $207,800. Housing costs are about average than the state median of $208,700. The home-value-to-income ratio is 3.1x. 69.8% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 67.3%.

Race & Ethnicity

The largest racial or ethnic group in Slidell city is White (non-Hispanic), making up 61.9% of the population. Black or African American residents account for 20.0%.

Education

30.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 16% higher than the state rate of 26.6%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.4%.

Data Sources & Methodology

All demographic data for Slidell city, Louisiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Louisiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 487 Census-designated places in Louisiana. For official data, visit data.census.gov.