Sun
- County:
- St. Tammany Parish
- County Seat:
- No
- Area (mi²):
- 4.268
- State:
- Louisiana
Sun is a village located in St. Tammany Parish, Louisiana. Sun has a 2026 population of 399. Sun is currently declining at a rate of 0% annually and its population has increased by 1.27% since the most recent census, which recorded a population of 394 in 2020.