Cities in St. Tammany Parish, Louisiana by Population (2024)

There are 14 cities in St. Tammany Parish, Louisiana.

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.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Slidell1Louisiana28,44828,694-0.22%1,86315.27
Mandeville2Louisiana13,05212,8400.41%1,3959.36
Covington3Louisiana11,64111,5490.2%1,4518.02
Bogalusa4Louisiana10,25010,621-0.9%1,0789.51
Eden Isle5Louisiana9,0738,1032.75%2,9873.04
Lacombe6Louisiana6,7767,294-1.87%25626.45
Franklinton7Louisiana3,5623,637-0.53%8154.37
Abita Springs8Louisiana2,7642,6301.21%6024.59
Pearl River9Louisiana2,6762,5631.06%7173.73
Madisonville10Louisiana8788480.8%3472.53
Folsom11Louisiana8257751.48%4151.99
Lewisburg12Louisiana5223558.3%1,0380.50
Sun13Louisiana4043950.5%954.27
Rio14Louisiana226308-8.13%1991.13

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 14 cities in St. Tammany Parish, Louisiana.

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