Quick information summary of the St. Mary's CDP area.
St. Mary's CDP is located in the state of Colorado. It occupies the area of 2 square miles. 1 square miles are water areas and 2 square miles remain for land areas. Center of the St. Mary's CDP lies at +39.8165309, -105.6471377 coordinates. According to the 2010 Census, there are 283 living in the St. Mary's CDP. The racial makeup shows these 3 races as the most frequent : White (97.53%), Two or More races (1.06%) and Some Other Race (0.35%). Median age is 41 for the males and 43 for the females.