Williamsburg
- County:
- Sierra County
- County Seat:
- No
- Area (mi²):
- 0.486
- State:
- New Mexico
Williamsburg is a village located in Sierra County, New Mexico. Williamsburg has a 2026 population of 460. Williamsburg is currently declining at a rate of -1.08% annually and its population has decreased by -0.86% since the most recent census, which recorded a population of 464 in 2020.