Williamsburg, New Mexico Demographics & Population 2026

A note before these figures: with a population of 466, Williamsburg's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Williamsburg is a small community located in New Mexico, within Sierra County. The total population is 466. It ranks as the 257th most populous out of 495 Census-designated places in New Mexico.

Age Demographics

The median age in Williamsburg is 54.9 years. This is 39% higher than the state median of 39.4 years. 19.1% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Williamsburg is $29,250. This is 54% lower than the state median of $64,059. It is also 64% lower than the national median of $80,734. The poverty rate stands at 12.9%. This is 28% lower than the state poverty rate of 17.8%. The unemployment rate is 12.2%. This is 105% higher than the state rate of 6.0%. The median home value is $43,600. Housing costs are 82% lower than the state median of $248,100. With a home-value-to-income ratio of just 1.5x, Williamsburg is one of the most affordable housing markets in the area. 80.1% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 70.0%.

Race & Ethnicity

The largest racial or ethnic group in Williamsburg is Hispanic or Latino, making up 47.2% of the population. White (non-Hispanic) residents account for 43.4%.

Education

13.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 57% lower than the state rate of 31.0%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.6%.

Data Sources & Methodology

All demographic data for Williamsburg, New Mexico is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New Mexico state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 495 Census-designated places in New Mexico. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.