Williamsburg is a village in Sierra County, New Mexico, United States. The population was 449 at the 2010 census. The village, though small, is located conveniently adjacent to Truth or Consequences, and has essentially become a suburb. Though the town is experiencing moderate growth now, especially along I-25, in the near future there is a high possibility of its becoming a booming bedroom community for lakesiders from Elephant Butte.
Williamsburg is located at 33°07′00″N 107°17′33″W.
According to the United States Census Bureau, the village has a total area of 0.5 square mile (1.2 km2), all land.
As of the census of 2000, there were 527 people, 264 households, and 153 families residing in the village. The population density was 1,096.2 people per square mile (423.9/km2). There were 345 housing units at an average density of 717.6 per square mile (277.5/km2). The racial makeup of the village was 91.84% White, 1.71% African American, 0.76% Native American, 0.19% Asian, 1.90% from other races, and 3.61% from two or more races. Hispanic or Latino of any race were 13.09% of the population.