St. Marys, KS Demographics

A map of St. Marys's Population by Race

St. Marys, Kansas has an estimated population of 2,788, a slight increase from the 2,759 recorded in the 2020 Census. The population is 79.2% White, 9.6% Hispanic, 4.4% Multiracial, 3.8% Native American/Other, 2.4% Asian, and 0.5% Black. This demographic dot map shows the population of St. Marys, with one dot drawn for each person counted by the Census, color-coded by race.

St. Marys has become more racially diverse since the 2020 Census. It is considerably less diverse than Kansas overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Marys, that probability was 33.8% in 2020 and 35.9% in the most recent ACS estimates.

St. Marys is ranked the 95th most populous place in Kansas, out of 740 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. Marys was ranked the 95th most populous place in the 2020 Census.

St. Marys's White Population

2,209 residents of St. Marys, or 79.2% of the population, identify as White. The share of White residents in St. Marys is higher than in Kansas overall, where 72.7% of the population is White. St. Marys ranks 598th statewide in terms of White residents as a share of the population, out of 740 places.

Since the 2020 Census, St. Marys's White population has remained roughly the same. White residents' share of St. Marys's population has decreased from 80.2% to 79.2%.

St. Marys is more White than neighboring Maple Hill (77.6% White). St. Marys is less White than neighboring Delia (83.6% White), Emmett (87.6% White), Belvue (93.7% White), and Rossville (88.2% White).

St. Marys's Black Population

14 residents of St. Marys, or 0.5% of the population, identify as Black. The share of Black residents in St. Marys is slightly lower than in Kansas overall, where 5.2% of the population is Black. St. Marys ranks 348th statewide in terms of Black residents as a share of the population, out of 740 places.

Since the 2020 Census, St. Marys's Black population has grown by an estimated 75.0%. Black residents' share of St. Marys's population has remained roughly unchanged at 0.5%.

St. Marys is more Black than neighboring Delia (0% Black), Emmett (0% Black), Maple Hill (0% Black), and Belvue (0% Black). St. Marys is less Black than neighboring Rossville (0.6% Black).

St. Marys's Asian Population

67 residents of St. Marys, or 2.4% of the population, identify as Asian. The share of Asian residents in St. Marys is comparable to the share in Kansas overall, where 2.9% of the population is Asian. St. Marys ranks 151st statewide in terms of Asian residents as a share of the population, out of 740 places.

Since the 2020 Census, St. Marys's Asian population has grown by an estimated 252.6%. Asian residents' share of St. Marys's population has increased from 0.7% to 2.4%.

St. Marys is more Asian than neighboring Delia (0% Asian), Emmett (0% Asian), Maple Hill (0.1% Asian), Belvue (0% Asian), and Rossville (1.4% Asian).

St. Marys's Hispanic Population

267 residents of St. Marys, or 9.6% of the population, identify as Hispanic. The share of Hispanic residents in St. Marys is slightly lower than in Kansas overall, where 13.6% of the population is Hispanic. St. Marys ranks 92nd statewide in terms of Hispanic residents as a share of the population, out of 740 places.

Since the 2020 Census, St. Marys's Hispanic population has declined by an estimated 19.3%. Hispanic residents' share of St. Marys's population has decreased from 12.0% to 9.6%.

St. Marys is more Hispanic than neighboring Delia (0% Hispanic), Emmett (6.7% Hispanic), Maple Hill (4.8% Hispanic), Belvue (6.3% Hispanic), and Rossville (6.1% Hispanic).

St. Marys's Native American/Other Population

107 residents of St. Marys, or 3.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Marys is slightly higher than in Kansas overall, where 0.9% of the population is Native American/Other. St. Marys ranks 314th statewide in terms of Native American/Other residents as a share of the population, out of 740 places.

Since the 2020 Census, St. Marys's Native American/Other population has grown by an estimated 328.0%. Native American/Other residents' share of St. Marys's population has increased from 0.9% to 3.8%.

St. Marys is more Native American/Other than neighboring Maple Hill (0.1% Native American/Other), Belvue (0% Native American/Other), and Rossville (0.8% Native American/Other). St. Marys is less Native American/Other than neighboring Delia (6.8% Native American/Other), and Emmett (3.9% Native American/Other).

St. Marys's Multiracial Population

124 residents of St. Marys, or 4.4% of the population, identify as Multiracial. The share of Multiracial residents in St. Marys is comparable to the share in Kansas overall, where 4.8% of the population is Multiracial. St. Marys ranks 213th statewide in terms of Multiracial residents as a share of the population, out of 740 places.

Since the 2020 Census, St. Marys's Multiracial population has declined by an estimated 23.5%. Multiracial residents' share of St. Marys's population has decreased from 5.9% to 4.4%.

St. Marys is more Multiracial than neighboring Emmett (1.7% Multiracial), Belvue (0% Multiracial), and Rossville (3% Multiracial). St. Marys is less Multiracial than neighboring Delia (9.6% Multiracial), and Maple Hill (17.4% 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.