St. Mary Parish, LA real estate

What the numbers say

St. Mary Parish, LA real estate at a glance

By AstroCore · Realtor.com, US Census and Freddie Mac data

In September 2026, the median home in St. Mary Parish listed for $181,425, up 6.3% from a year earlier. That is 33% below the Louisiana median of $270,000.

Homes spent a median of 106 days on the market, slower than 90 days a year ago. That makes St. Mary Parish the #22 fastest-selling of 23 Louisiana counties we track.

Homeowners in St. Mary Parish pay a median of $545 a year in property taxes on a median home value of $138,900, an effective rate of about 0.39%. The Louisiana average is 0.55%, which makes St. Mary Parish the #28 lowest-tax of 64 counties in the state with published tax data.

Renters pay a median of $848 a month, and $824 for a two-bedroom. At today's prices a typical home costs about 18 times a year's rent.

With 20% down and today's 7.24% average 30-year rate, the monthly payment on a $181,000 home here comes to about $1,124 including property tax and insurance. Lenders typically want that to be under 28% of income, which works out to roughly $48,000 a year (the median household here earns $52,576).