St. Mary's, CO Demographics

A map of St. Mary's's Population by Race

St. Mary's, Colorado has an estimated population of 68, a dramatic decrease from the 333 recorded in the 2020 Census. The population is 100.0% White, 0.0% Black, 0.0% Asian, 0.0% Hispanic, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of St. Mary's, with one dot drawn for each person counted by the Census, color-coded by race.

St. Mary's has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than Colorado overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Mary's, that probability was 24.5% in 2020 and 0.0% in the most recent ACS estimates.

St. Mary's is ranked the 431st most populous place in Colorado, out of 482 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). St. Mary's was ranked the 316th most populous place in the 2020 Census.

St. Mary's's White Population

68 residents of St. Mary's, or 100.0% of the population, identify as White. The share of White residents in St. Mary's is significantly higher than in Colorado overall, where 64.8% of the population is White. St. Mary's ranks 105th statewide in terms of White residents as a share of the population, out of 482 places.

Since the 2020 Census, St. Mary's's White population has declined by an estimated 76.4%. White residents' share of St. Mary's's population has increased from 86.5% to 100.0%.

St. Mary's is more White than neighboring Downieville-Lawson-Dumont (69.9% White), Empire (85.1% White), Georgetown (80.6% White), Silver Plume (84.3% White), and Winter Park (89.9% White).

St. Mary's's Black Population

0 residents of St. Mary's, or 0.0% of the population, identify as Black. The share of Black residents in St. Mary's is slightly lower than in Colorado overall, where 3.8% of the population is Black. St. Mary's ranks 141st statewide in terms of Black residents as a share of the population, out of 482 places.

Since the 2020 Census, St. Mary's's Black population has declined by an estimated 100.0%. Black residents' share of St. Mary's's population has decreased from 0.9% to 0.0%.

St. Mary's is less Black than neighboring Empire (0.1% Black).

St. Mary's's Asian Population

0 residents of St. Mary's, or 0.0% of the population, identify as Asian. The share of Asian residents in St. Mary's is slightly lower than in Colorado overall, where 3.2% of the population is Asian. St. Mary's ranks 155th statewide in terms of Asian residents as a share of the population, out of 482 places.

Since the 2020 Census, St. Mary's's Asian population has declined by an estimated 100.0%. Asian residents' share of St. Mary's's population has decreased from 1.2% to 0.0%.

St. Mary's is less Asian than neighboring Empire (0.4% Asian), Georgetown (1.7% Asian), and Silver Plume (3.9% Asian).

St. Mary's's Hispanic Population

0 residents of St. Mary's, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in St. Mary's is significantly lower than in Colorado overall, where 22.5% of the population is Hispanic. St. Mary's ranks 367th statewide in terms of Hispanic residents as a share of the population, out of 482 places.

Since the 2020 Census, St. Mary's's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of St. Mary's's population has decreased from 6.9% to 0.0%.

St. Mary's is less Hispanic than neighboring Downieville-Lawson-Dumont (27.2% Hispanic), Empire (5.5% Hispanic), Georgetown (9.2% Hispanic), and Winter Park (2.1% Hispanic).

St. Mary's's Native American/Other Population

0 residents of St. Mary's, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Mary's is comparable to the share in Colorado overall, where 1% of the population is Native American/Other. St. Mary's ranks 430th statewide in terms of Native American/Other residents as a share of the population, out of 482 places.

Since the 2020 Census, St. Mary's's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of St. Mary's's population has remained roughly unchanged at 0.0%.

St. Mary's is less Native American/Other than neighboring Downieville-Lawson-Dumont (2.9% Native American/Other), Empire (0.1% Native American/Other), and Georgetown (7% Native American/Other).

St. Mary's's Multiracial Population

0 residents of St. Mary's, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in St. Mary's is slightly lower than in Colorado overall, where 4.6% of the population is Multiracial. St. Mary's ranks 188th statewide in terms of Multiracial residents as a share of the population, out of 482 places.

Since the 2020 Census, St. Mary's's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of St. Mary's's population has decreased from 4.5% to 0.0%.

St. Mary's is less Multiracial than neighboring Empire (8.6% Multiracial), Georgetown (1.4% Multiracial), Silver Plume (11.8% Multiracial), and Winter Park (7.9% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.