St. Tammany Parish, Louisiana Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Slidell128,44828,694-0.22%1,86315.3City
Mandeville213,05212,8400.41%1,3959.4City
Covington311,64111,5490.2%1,4518.0City
Eden Isle48,8468,1031.48%2,9133.0CDP
Lacombe56,7617,294-1.99%25626.4CDP
Abita Springs62,7642,6301.21%6024.6Town
Pearl River72,6762,5631.06%7173.7Town
Madisonville88788480.8%3472.5Town
Folsom98257751.48%4152.0Village
Lewisburg105163557.72%1,0260.5CDP
Sun114043950.5%954.3Village
Rio123123087.96%2751.1CDP

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in St. Tammany Parish, Louisiana?

Slidell is the largest city in St. Tammany Parish.

What is the smallest city in St. Tammany Parish, Louisiana?

Rio is the smallest city in St. Tammany Parish.

How many cities are in St. Tammany Parish?

There are 12 cities in St. Tammany Parish, Louisiana.

Frequently Asked Questions