St. Mary's CDP, Colorado Demographics & Population 2026

Population Overview

St. Mary's CDP is a small community located in Colorado. The total population is 130. It ranks as the 398th most populous out of 471 cities and towns in Colorado.

Age Demographics

The median age in St. Mary's CDP is 31.8 years. This is 15% lower than the state median of 37.5 years. With 31.5% of the population under 18, St. Mary's CDP has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in St. Mary's CDP is $78,854. This is 15% lower than the state median of $92,470. Compared to the national median of $78,538, household income here is about average. The poverty rate stands at 0.0%. This is 100% lower than the state poverty rate of 9.4%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 0.0%. This is 100% lower than the state rate of 4.5%. The median home value is $406,900. Housing costs are 19% lower than the state median of $502,200. The home-value-to-income ratio is 5.2x. 78.3% of occupied housing units are owner-occupied. This homeownership rate is 18% higher than the state average of 66.3%.

Race & Ethnicity

St. Mary's CDP has a predominantly White (non-Hispanic) population, comprising 100.0% of all residents. The White (non-Hispanic) population is significantly higher than the state average (100.0% vs 65.6%).

Education

36.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% lower than the state rate of 44.7%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 100.0%.

Data Sources & Methodology

All demographic data for St. Mary's CDP, Colorado is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Colorado state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 471 Census-designated places in Colorado. For official data, visit data.census.gov.