Updated: 2025-10-25
Life in St. Mary's County research summary. HomeSnacks has been researching the quality of life in St. Mary's County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in St. Mary's County:
The population in St. Mary's County is 114,372.
The median home value in St. Mary's County is $420,317.
The median income in St. Mary's County is $114,580.
The median rent in St. Mary's County is $1,692.
The unemployment rate in St. Mary's County is 3.8%.
The poverty rate in St. Mary's County is 7.4%.
The average high in St. Mary's County is 68.4° and there are 110.5 inches of rainfall annually.
The average high in St. Mary's County is 68.4°.
There are 91.24 nice days each year.
Expect an average of 110.5 inches of rain each year with 4.9 inches of snow.
There is an average of 5:18 hours of sun each day in St. Mary's County.
| Stat | St. Mary's County |
|---|---|
| Mean High | 68.4 |
| Nice Days | 91.24 |
| Rainfall | 110.5 |
| Snowfall | 4.9 |
| Sunny Hours | 5:18 |
The current population in St. Mary's County is 114,372. The population has increased 0.8% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 113,209 | 0.0% |
| 2022 | 113,182 | 0.8% |
| 2021 | 112,290 | - |
St. Mary's County is 49.6% female with 56,688 female residents.
St. Mary's County is 50.4% male with 57,683 male residents.
| Gender | St. Mary's County | MD | USA |
|---|---|---|---|
| Female | 49.6% | 51.3% | 50.5% |
| Male | 50.4% | 48.7% | 49.5% |
St. Mary's County is:
71.0% White with 81,155 White residents.
14.6% African American with 16,744 African American residents.
0.1% American Indian with 69 American Indian residents.
2.5% Asian with 2,908 Asian residents.
0.0% Hawaiian with 0 Hawaiian residents.
0.3% Other with 343 Other residents.
5.6% Two Or More with 6,348 Two Or More residents.
5.9% Hispanic with 6,805 Hispanic residents.
| Race | St. Mary's County | MD | USA |
|---|---|---|---|
| White | 71.0% | 47.4% | 58.2% |
| African American | 14.6% | 29.2% | 12.0% |
| American Indian | 0.1% | 0.1% | 0.5% |
| Asian | 2.5% | 6.4% | 5.7% |
| Hawaiian | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.6% | 0.5% |
| Two Or More | 5.6% | 4.2% | 3.9% |
| Hispanic | 5.9% | 12.1% | 19.0% |
3.6% of households in St. Mary's County earn Less than $10,000.
2.3% of households in St. Mary's County earn $10,000 to $14,999.
3.3% of households in St. Mary's County earn $15,000 to $24,999.
4.4% of households in St. Mary's County earn $25,000 to $34,999.
5.2% of households in St. Mary's County earn $35,000 to $49,999.
11.6% of households in St. Mary's County earn $50,000 to $74,999.
12.8% of households in St. Mary's County earn $75,000 to $99,999.
20.1% of households in St. Mary's County earn $100,000 to $149,999.
15.5% of households in St. Mary's County earn $150,000 to $199,999.
21.2% of households in St. Mary's County earn $200,000 or more.
| Income | St. Mary's County | MD | USA |
|---|---|---|---|
| Less than $10,000 | 3.6% | 4.3% | 4.9% |
| $10,000 to $14,999 | 2.3% | 2.5% | 3.6% |
| $15,000 to $24,999 | 3.3% | 4.5% | 6.6% |
| $25,000 to $34,999 | 4.4% | 4.9% | 6.8% |
| $35,000 to $49,999 | 5.2% | 7.9% | 10.4% |
| $50,000 to $74,999 | 11.6% | 13.2% | 15.7% |
| $75,000 to $99,999 | 12.8% | 12.0% | 12.7% |
| $100,000 to $149,999 | 20.1% | 19.3% | 17.4% |
| $150,000 to $199,999 | 15.5% | 12.4% | 9.3% |
| $200,000 or more | 21.2% | 19.2% | 12.6% |
3.0% of adults in St. Mary's County completed < 9th grade.
5.0% of adults in St. Mary's County completed 9-12th grade.
29.0% of adults in St. Mary's County completed high school / ged.
20.0% of adults in St. Mary's County completed some college.
8.0% of adults in St. Mary's County completed associate's degree.
20.0% of adults in St. Mary's County completed bachelor's degree.
13.0% of adults in St. Mary's County completed master's degree.
1.0% of adults in St. Mary's County completed professional degree.
1.0% of adults in St. Mary's County completed doctorate degree.
| Education | St. Mary's County | MD | USA |
|---|---|---|---|
| < 9th Grade | 3% | 3% | 5% |
| 9-12th Grade | 5% | 5% | 6% |
| High School / GED | 28% | 24% | 26% |
| Some College | 20% | 18% | 19% |
| Associate's Degree | 8% | 7% | 9% |
| Bachelor's Degree | 20% | 22% | 21% |
| Master's Degree | 13% | 14% | 10% |
| Professional Degree | 1% | 3% | 2% |
| Doctorate Degree | 1% | 3% | 2% |
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