St. Mary's County, Maryland's estimated 2024 population is 115,779 with a growth rate of 0.43% in the past year according to the most recent United States census data. St. Mary's County, Maryland is the 12th largest county in Maryland. The 2010 population was 105,772 and has seen a growth of 9.46% since that time.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 118,269 | 498 | 0.42% |
| 2028 | 117,771 | 498 | 0.42% |
| 2027 | 117,273 | 498 | 0.43% |
| 2026 | 116,775 | 498 | 0.43% |
| 2025 | 116,277 | 498 | 0.43% |
| 2024 | 115,779 | 498 | 0.43% |
| 2023 | 115,281 | 498 | 0.43% |
| 2022 | 114,783 | 133 | 0.12% |
| 2021 | 114,650 | 651 | 0.57% |
| 2020 | 113,999 | 235 | 0.21% |
| 2019 | 113,764 | 816 | 0.72% |
| 2018 | 112,948 | 321 | 0.29% |
| 2017 | 112,627 | 741 | 0.66% |
| 2016 | 111,886 | 794 | 0.71% |
| 2015 | 111,092 | 1,094 | 0.99% |
| 2014 | 109,998 | 714 | 0.65% |
| 2013 | 109,284 | 437 | 0.4% |
| 2012 | 108,847 | 1,258 | 1.17% |
| 2011 | 107,589 | 1,817 | 1.72% |
| 2010 | 105,772 | 0 | 0% |
| 1990 | 75,974 | 16,079 | 26.85% |
| 1980 | 59,895 | 12,507 | 26.39% |
| 1970 | 47,388 | 8,473 | 21.77% |
| 1960 | 38,915 | 9,804 | 33.68% |
| 1950 | 29,111 | 14,485 | 99.04% |
| 1940 | 14,626 | -563 | -3.71% |
| 1930 | 15,189 | -923 | -5.73% |
| 1920 | 16,112 | -918 | -5.39% |
| 1910 | 17,030 | -152 | -0.88% |
| 1900 | 17,182 | 1,363 | 8.62% |
| 1890 | 15,819 | -1,115 | -6.58% |
| 1880 | 16,934 | 1,990 | 13.32% |
| 1870 | 14,944 | -269 | -1.77% |
| 1860 | 15,213 | 1,515 | 11.06% |
| 1850 | 13,698 | 474 | 3.58% |
| 1840 | 13,224 | -235 | -1.75% |
| 1830 | 13,459 | 485 | 3.74% |
| 1820 | 12,974 | 180 | 1.41% |
| 1810 | 12,794 | -905 | -6.61% |
| 1800 | 13,699 | -1,845 | -11.87% |
| 1790 | 15,544 | -102,725 | -86.86% |
Race | Population | Percentage (of total) |
|---|---|---|
| White | 83,764 | 73.6% |
| Black or African American | 16,411 | 14.42% |
| Two or more races | 8,690 | 7.64% |
| Asian | 2,839 | 2.49% |
| Other race | 2,043 | 1.8% |
| Native American | 67 | 0.06% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
White
Black or African American
Two or more races
Asian
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 41,211 | 2.7 | 72.5 | 27.5 |
| Married | 22,000 | 3.35 | 85.8 | 14.2 |
| Non Family | 12,074 | 1.28 | 57.8 | 42.2 |
| Female | 5,304 | 3.11 | 50.9 | 49.1 |
| Male | 1,833 | 3.06 | 71.6 | 28.4 |
3.2
Average Family Size
2.7
Average Household Size
72.5%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 4,231 | 5.56% |
| Associates Degree | 5,742 | 7.54% |
| Bachelors Degree | 15,055 | 19.77% |
| Graduate Degree | 11,531 | 15.14% |
| High School Graduate | 22,504 | 29.56% |
| Less Than 9th Grade | 2,000 | 2.63% |
| Some College | 15,076 | 19.8% |
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 56,775 | 53,045 | 21,568 |
| Black | 10,576 | 9,025 | 1,866 |
| 2+ Races | 4,246 | 4,039 | 1,763 |
| Hispanic | 3,476 | 2,904 | 792 |
| Asian | 2,300 | 2,183 | 1,104 |
| Other Race | 1,069 | 703 | 130 |
| Native American | 36 | 31 | 0 |
The highest rate of high school graduation is among 2+ races people with a rate of 95.12%.
The highest rate of bachelors degrees is among asian people with a rate of 48%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $93,630 | $110,120 | $71,395 |
| Graduate Degree | $113,924 | $143,534 | $90,643 |
| High School Graduate | $46,362 | $60,051 | $35,308 |
| Less Than 9th Grade | $44,247 | $50,000 | $20,503 |
| Overall | $70,421 | $84,776 | $54,190 |
| Some College | $62,329 | $72,202 | $46,162 |
$70,421
Average Earnings
$84,776
Average Male
$54,190
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
93.02% of St. Mary's County, Maryland residents speak only English, while 6.98% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.06% of the population.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 79,980 | 4,624 | 5.78% |
| Black | 15,925 | 2,411 | 15.14% |
| Multiple | 8,553 | 654 | 7.65% |
| Hispanic | 6,333 | 437 | 6.9% |
| Other | 2,031 | 369 | 18.17% |
| Asian | 2,783 | 148 | 5.32% |
7.59%
Overall Poverty Rate
6.93%
Male Poverty Rate
8.26%
Female Poverty Rate
The race most likely to be in poverty in St. Mary's County, Maryland is Other, with 18.17% below the poverty level.
The race least likely to be in poverty in St. Mary's County, Maryland is Asian, with 5.32% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.75%. Among those working part-time, it was 9.06%, and for those that did not work, the poverty rate was 16.47%.
rate
Rate | Poverty |
|---|---|
| Less Than 9th Grade | 22.26% |
| High School | 9.52% |
| Some College | 6.49% |
| Bachelors or Greater | 1.73% |
rate
Rate | Poverty |
|---|---|
| Male Unemployed | 29.48% |
| Female Unemployed | 24.25% |
| Female Employed | 5.03% |
| Male Employed | 2.02% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $132,926 | $148,387 |
| Households | $113,668 | $134,383 |
| Married Families | $153,781 | $170,146 |
| Non Families | $69,830 | $91,081 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
50.9%
Overall Marriage Rate
51.5%
Male Marriage Rate
50.3%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
11,968
Number of Veterans
10,300
Male Veterans
1,668
Female Veterans
War | Veterans |
|---|---|
| First Gulf War | 5,785 |
| Second Gulf War | 5,113 |
| Vietnam | 2,766 |
| Korea | 215 |
| World War II | 29 |
count
Age Group | Veterans |
|---|---|
| 35 to 54 | 4,627 |
| 55 to 64 | 2,814 |
| 65 to 74 | 1,751 |
| 75+ | 1,614 |
| 18 to 34 | 1,162 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 9,258 | 14.5% |
| Black | 1,477 | 12.24% |
| 2+ Races | 950 | 19.92% |
| Hispanic | 766 | 18.21% |
| Other Race | 230 | 16.58% |
| Asian | 53 | 2.21% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
3.78%
Veteran Poverty Rate
18.28%
Veteran Disability Rate
LaborForceParticipation
68.4%
Labor Force Participation
63.7%
Employment Rate
3.7%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
48.79%
Born in St. Mary's County, Maryland
94.98%
Native Born
5.02%
Foreign Born
2.41%
Non Citizen
2.61%
Naturalized
94.98% of St. Mary's County, Maryland residents were born in the United States, with 48.79% having been born in Maryland. 2.41% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.