Population Demographics
As of 2026 the population of St. Landry is 81,174. The population is expected to shrink to 80,245 by 2031 - a growth rate of -0.23%.
The median age of St. Landry residents is 41.
The diversity index of St. Landry is 58.6, meaning that there is a 59% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.