St. Mary Parish, Louisiana

St. Mary Parish is a county in Louisiana with an estimated population of 47,055 in 2023. 5 cities, towns and Census places in it are indexed here.

Largest places in St. Mary Parish

About St. Mary Parish

St. Mary Parish is one of the counties of Louisiana. County governments in Louisiana handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.