St. Martin Parish, Louisiana Demographics 2026

Population Overview

St. Martin Parish is located in Louisiana with a total population of 51,559. It is the 21st most populous county out of 64 in Louisiana.

Age Demographics

The median age in St. Martin Parish is 39.7 years. This is 5% higher than the state median of 37.8 years.

Economy, Income & Housing

The median household income in St. Martin Parish is $53,394. This is 11% lower than the state median of $60,023. Compared to the national median of $78,538, household income here is 32% lower. The poverty rate stands at 16.6%. This is 12% lower than the state poverty rate of 18.9%. The unemployment rate is 5.1%. This is 19% lower than the state rate of 6.3%. The median home value is $151,000. Housing costs are 28% lower than the state median of $208,700. With a home-value-to-income ratio of just 2.8x, St. Martin Parish is one of the most affordable housing markets in the area. 78.9% of occupied housing units are owner-occupied. This homeownership rate is 17% higher than the state average of 67.3%.

Race & Ethnicity

The largest racial or ethnic group in St. Martin Parish is White (non-Hispanic), making up 63.7% of the population. Black or African American residents account for 28.6%. The Hispanic or Latino population (3.4%) is well below the state average of 7.0%.

Education

15.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 42% lower 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 82.9%.