Population Demographics
As of 2025 the population of St. Landry is 81,558. The population is expected to shrink to 80,675 by 2030 - a growth rate of -0.22%.
The median age of St. Landry residents is 41.
The diversity index of St. Landry is 58.2, meaning that there is a 58% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.