St. Mary's County, Maryland Population 2022
St. Mary's County, Maryland's estimated population is 115,880 with a growth rate of 0.69% in the past year according to the most recent United States census data. St. Mary's County, Maryland is the 13th largest county in Maryland. The 2010 Population was 105,761 and has seen a growth of 9.57% since this time.
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 1790 | 15,544 | 0.00% | |
| 1800 | 13,699 | -1,845 | -11.87% |
| 1810 | 12,794 | -905 | -6.61% |
| 1820 | 12,974 | 180 | 1.41% |
| 1830 | 13,459 | 485 | 3.74% |
| 1840 | 13,224 | -235 | -1.75% |
| 1850 | 13,698 | 474 | 3.58% |
| 1860 | 15,213 | 1,515 | 11.06% |
| 1870 | 14,944 | -269 | -1.77% |
| 1880 | 16,934 | 1,990 | 13.32% |
| 1890 | 15,819 | -1,115 | -6.58% |
| 1900 | 17,182 | 1,363 | 8.62% |
| 1910 | 17,030 | -152 | -0.88% |
| 1920 | 16,112 | -918 | -5.39% |
| 1930 | 15,189 | -923 | -5.73% |
| 1940 | 14,626 | -563 | -3.71% |
| 1950 | 29,111 | 14,485 | 99.04% |
| 1960 | 38,915 | 9,804 | 33.68% |
| 1970 | 47,388 | 8,473 | 21.77% |
| 1980 | 59,895 | 12,507 | 26.39% |
| 1990 | 75,974 | 16,079 | 26.85% |
| 2010 | 105,761 | 29,787 | 39.21% |
| 2011 | 107,566 | 1,805 | 1.71% |
| 2012 | 108,800 | 1,234 | 1.15% |
| 2013 | 109,224 | 424 | 0.39% |
| 2014 | 109,913 | 689 | 0.63% |
| 2015 | 110,985 | 1,072 | 0.98% |
| 2016 | 111,750 | 765 | 0.69% |
| 2017 | 112,487 | 737 | 0.66% |
| 2018 | 112,720 | 233 | 0.21% |
| 2019 | 113,510 | 790 | 0.70% |
| 2020 | 114,300 | 790 | 0.70% |
| 2021 | 115,090 | 790 | 0.69% |
| 2022 | 115,880 | 790 | 0.69% |
Population by Race
| Race | Population | Percentage |
|---|---|---|
| White | 86,781 | 76.67% |
| Black or African American | 16,348 | 14.44% |
| American Indian and Alaska Native | 67 | 0.06% |
| Asian | 2,936 | 2.59% |
| Native Hawaiian and Other Pacific Islander | 21 | 0.02% |
| Some Other Race | 1,146 | 1.01% |
| Two or More Races | 5,883 | 5.20% |
St. Mary's County, Maryland Population Pyramid 2022
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 41,280 | 2.67 | 70.3 |
| Married | 22,223 | 3.32 | 84 |
| Male | 1,707 | 3.02 | 61 |
| Female | 5,547 | 3.03 | 49.5 |
| Non Family | 11,803 | 1.24 | 55.6 |
3.16
Average Family Size
2.67
Average Household Size
| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 2,612 | 3.47% |
| 9th to 12th Grade | 4,637 | 6.16% |
| High School Graduate | 22,962 | 30.52% |
| Some College | 14,618 | 19.43% |
| Associates Degree | 6,289 | 8.36% |
| Bachelors Degree | 13,957 | 18.55% |
| Graduate Degree | 10,150 | 13.49% |
St. Mary's County, Maryland Educational Attainment by Race
| Race | Total | High School | Bachelors |
|---|---|---|---|
| Islander | 21 | 21 | 21 |
| Asian | 2,244 | 1,750 | 887 |
| 2+ Races | 2,749 | 2,679 | 1,079 |
| White | 57,414 | 53,183 | 20,103 |
| Hispanic | 3,155 | 2,507 | 829 |
| Other Race | 603 | 331 | 134 |
| Black | 10,366 | 8,569 | 1,416 |
| Native American | 38 | 29 |
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among islander people with a rate of 100.00%.
$60,146
Average Earnings
$72,456
Average Male
$44,528
Average Female
St. Mary's County, Maryland Language by Age
St. Mary's County, Maryland Language
92.87% of St. Mary's County, Maryland residents speak only English, while 7.13% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.03% of the population.
St. Mary's County, Maryland Poverty by Race
| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| Black | 15,718 | 2,638 | 16.78% |
| Multiple | 5,759 | 656 | 11.39% |
| Hispanic | 5,913 | 439 | 7.42% |
| White | 81,218 | 4,961 | 6.11% |
| Asian | 2,814 | 106 | 3.77% |
| Other | 159 | NaN% |
8.03%
Overall Poverty Rate
6.80%
Male Poverty Rate
9.25%
Female Poverty Rate
Poverty in St. Mary's County, Maryland
The race most likely to be in poverty in St. Mary's County, Maryland is Black, with 16.78% below the poverty level.
The race least likely to be in poverty in St. Mary's County, Maryland is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.77%. Among those working part-time, it was 11.16%, and for those that did not work, the poverty rate was 14.77%.
St. Mary's County, Maryland Marital Status
Marriage Rates
51.8%
Overall Marriage Rate
53.0%
Male Marriage Rate
50.5%
Female Marriage Rate
St. Mary's County, Maryland Married by Age and Sex
St. Mary's County, Maryland Marriage
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.
St. Mary's County, Maryland Marital Status by Race
| Name | Veterans | % of Total |
|---|---|---|
| White | 9,370 | 14.33% |
| Black | 1,374 | 11.44% |
| Asian | 58 | 2.41% |
| Other Race | 148 | 16.86% |
| 2+ Races | 461 | 15.91% |
| Hispanic | 560 | 14.49% |
St. Mary's County, Maryland Veterans by Education
3.37%
Veteran Poverty Rate
16.35%
Veteran Disability Rate
67.5%
Labor Force Participation
62.8%
Employment Rate
3.5%
Unemployment Rate
Origin of Non-Citizens
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
49.97%
Born in St. Mary's County, Maryland
94.82%
Native Born
5.18%
Foreign Born
2.46%
Non Citizen
2.72%
Naturalized
Place of Birth
94.82% of St. Mary's County, Maryland residents were born in the United States, with 49.97% having been born in Maryland. 2.46% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990