St. Marys, GA Demographics

A map of St. Marys's Population by Race

St. Marys, Georgia has an estimated population of 19,166, an increase from the 18,256 recorded in the 2020 Census. The population is 70.2% White, 14.5% Black, 8.4% Hispanic, 4.7% Multiracial, 1.6% Asian, and 0.6% Native American/Other. 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 less racially diverse since the 2020 Census. It is considerably less diverse than Georgia 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 49.3% in 2020 and 47.6% in the most recent ACS estimates.

St. Marys is ranked the 61st most populous place in Georgia, out of 675 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 64th most populous place in the 2020 Census.

St. Marys's White Population

13,458 residents of St. Marys, or 70.2% of the population, identify as White. The share of White residents in St. Marys is significantly higher than in Georgia overall, where 49.1% of the population is White. St. Marys ranks 256th statewide in terms of White residents as a share of the population, out of 675 places.

Since the 2020 Census, St. Marys's White population has grown by an estimated 7.3%. White residents' share of St. Marys's population has increased from 68.7% to 70.2%.

St. Marys is more White than neighboring Kings Bay Base (64.3% White), Kingsland (59.5% White), and Woodbine (59.4% White). St. Marys is less White than neighboring Yulee (75.1% White), and Fernandina Beach (80% White).

St. Marys's Black Population

2,774 residents of St. Marys, or 14.5% of the population, identify as Black. The share of Black residents in St. Marys is significantly lower than in Georgia overall, where 30.7% of the population is Black. St. Marys ranks 405th statewide in terms of Black residents as a share of the population, out of 675 places.

Since the 2020 Census, St. Marys's Black population has declined by an estimated 7.2%. Black residents' share of St. Marys's population has decreased from 16.4% to 14.5%.

St. Marys is more Black than neighboring Kings Bay Base (10.1% Black), Yulee (7.5% Black), and Fernandina Beach (8.2% Black). St. Marys is less Black than neighboring Kingsland (19.9% Black), and Woodbine (36.3% Black).

St. Marys's Asian Population

305 residents of St. Marys, or 1.6% of the population, identify as Asian. The share of Asian residents in St. Marys is slightly lower than in Georgia overall, where 4.5% of the population is Asian. St. Marys ranks 192nd statewide in terms of Asian residents as a share of the population, out of 675 places.

Since the 2020 Census, St. Marys's Asian population has grown by an estimated 22.5%. Asian residents' share of St. Marys's population has remained roughly unchanged at 1.6%.

St. Marys is more Asian than neighboring Kings Bay Base (0.3% Asian), Fernandina Beach (0.4% Asian), and Woodbine (0% Asian). St. Marys is less Asian than neighboring Kingsland (2.3% Asian).

St. Marys's Hispanic Population

1,612 residents of St. Marys, or 8.4% of the population, identify as Hispanic. The share of Hispanic residents in St. Marys is slightly lower than in Georgia overall, where 11% of the population is Hispanic. St. Marys ranks 233rd statewide in terms of Hispanic residents as a share of the population, out of 675 places.

Since the 2020 Census, St. Marys's Hispanic population has grown by an estimated 24.8%. Hispanic residents' share of St. Marys's population has increased from 7.1% to 8.4%.

St. Marys is more Hispanic than neighboring Yulee (7.3% Hispanic), and Woodbine (0.1% Hispanic). St. Marys is less Hispanic than neighboring Kings Bay Base (14.7% Hispanic), Fernandina Beach (10.2% Hispanic), and Kingsland (9.7% Hispanic).

St. Marys's Native American/Other Population

113 residents of St. Marys, or 0.6% 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 comparable to the share in Georgia overall, where 0.7% of the population is Native American/Other. St. Marys ranks 97th statewide in terms of Native American/Other residents as a share of the population, out of 675 places.

Since the 2020 Census, St. Marys's Native American/Other population has declined by an estimated 40.5%. Native American/Other residents' share of St. Marys's population has remained roughly unchanged at 0.6%.

St. Marys is more Native American/Other than neighboring Fernandina Beach (0% Native American/Other), and Woodbine (0.3% Native American/Other). St. Marys is less Native American/Other than neighboring Kings Bay Base (2.5% Native American/Other), Yulee (1.2% Native American/Other), and Kingsland (1% Native American/Other).

St. Marys's Multiracial Population

904 residents of St. Marys, or 4.7% of the population, identify as Multiracial. The share of Multiracial residents in St. Marys is comparable to the share in Georgia overall, where 3.9% of the population is Multiracial. St. Marys ranks 58th statewide in terms of Multiracial residents as a share of the population, out of 675 places.

Since the 2020 Census, St. Marys's Multiracial population has declined by an estimated 8.5%. Multiracial residents' share of St. Marys's population has decreased from 5.4% to 4.7%.

St. Marys is more Multiracial than neighboring Fernandina Beach (1.2% Multiracial), and Woodbine (3.9% Multiracial). St. Marys is less Multiracial than neighboring Kings Bay Base (8% Multiracial), Yulee (7.3% Multiracial), and Kingsland (7.5% 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.