County-level Census Bureau data covering income, housing, demographics, education, employment, and more. Counties are the primary administrative division in the U.S. and the most common unit for comparing local conditions across a state.
Data: U.S. Census Bureau, ACS 5-Year Estimates, 2023 (released December 2024).
Quick Facts — St. Mary's County
- What is the median household income in St. Mary's County?
- The median household income in St. Mary's County is $114,580 (U.S. Census Bureau ACS 5-Year Estimates, 2023).
- What is the poverty rate in St. Mary's County?
- The poverty rate in St. Mary's County is 5.6% (U.S. Census Bureau ACS 2023).
- What is the median home value in St. Mary's County?
- $390,900 (U.S. Census Bureau ACS 2023).
- What is the average rent in St. Mary's County?
- The median gross rent in St. Mary's County is $1,692 per month (U.S. Census Bureau ACS 2023).
- What percentage of St. Mary's County residents have a college degree?
- 35.1% of adults in St. Mary's County hold a bachelor's degree or higher (U.S. Census Bureau ACS 2023).
Population
114,372
Median Income
$114,580
Median Home Value
$390,900
Poverty Rate
5.6%
Unemployment (ACS 2023)
3.8%
Median Age
37.0 yrs
Since 2019
Median Income:
+$24,735 (+27.5%)
Home Value:
+$89,600 (+29.7%)
Poverty Rate:
-0.6 pp (-9.7%)
Bachelor's+:
+3.2 pp (+10%)
Unemployment:
+0.5 pp (+15.2%)
Demographics
Total Population
114,372
Median Age
37.0
Female
49.6%
Race & Ethnicity
Hispanic or Latino 5.9%
White (non-Hisp.) 71.0%
Black 14.8%
Asian 2.6%
Two or More 8.3%
Other 2.0%
Asian Subgroups (% of total pop.)
Filipino
1.3%
Indian
0.3%
Chinese
0.2%
Korean
0.2%
Vietnamese
0.2%
Japanese
0.1%
Hispanic Subgroups (% of total pop.)
Mexican
2.5%
Puerto Rican
0.8%
Cuban
0.1%
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Income & Poverty
Median Household Income
$114,580
±$4,177
+$12,928 vs. state
Per Capita Income
$134,209
Median Family Income
$133,566
Poverty Rate
5.6%
-0.7 pp vs. state
Child Poverty Rate
8.1%
Working-Age Poverty Rate
—
SNAP Recipients
10.9%
Social Security Income
—
Retirement Income
29.4%
Household Income Distribution
< $10k
3.6%
$10–15k
2.3%
$15–25k
3.3%
$25–35k
4.4%
$35–50k
5.2%
$50–75k
11.6%
$75–100k
12.8%
$100–150k
20.1%
$150–200k
15.5%
$200k+
21.2%
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Housing
Total Housing Units
46,078
Owner-Occupied
72.6%
Renter-Occupied
27.4%
Vacancy Rate
9.4%
Median Home Value
$390,900
-$6,800 vs. state
Median Gross Rent
$1,692
Owner Cost Burden (30%+)
13.7%
Renter Cost Burden (30%+)
36.7%
Home Value Distribution
< $50k
3.4%
$50–100k
0.8%
$100–200k
1.6%
$200–300k
16.8%
$300–500k
46.6%
$500k–$1M
24.6%
$1M+
2.6%
Gross Rent Distribution
< $500
6.4%
$500–1k
7.0%
$1–1.5k
23.2%
$1.5–2k
34.8%
$2–2.5k
20.1%
$2.5–3.5k
7.2%
$3.5k+
1.3%
Vehicle Availability
No vehicle
3.7%
1 vehicle
24.6%
2 vehicles
39.0%
3+
32.7%
Housing Type
Single-fam. det.
73.3%
Single-fam. att.
9.9%
2–4 units
0.8%
5–19 units
2.4%
20+ units
4.7%
Mobile home
3.3%
Housing Age
Pre-1940
3.2%
1940–1969
2.5%
1970–1999
14.2%
2000–2009
20.3%
2010+
14.4%
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Education
High School or Higher
92.4%
Bachelor's or Higher
35.1%
-7.6 pp vs. state
Graduate Degree
15.1%
Some College / Associate
20.4%
Less Than High School
2.5%
Enrolled in School
—
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Employment
Labor Force Participation
68.3%
Unemployment Rate
3.8%
-1.1 pp vs. state
Work from Home
15.3%
Self-Employed
4.7%
Government Workers
32.1%
Private For-Profit
63.0%
Industry
Public Admin
19.1%
Prof. Services
17.6%
Edu/Health
17.2%
Retail
9.5%
Construction
9.5%
Arts/Entmt.
7.1%
Transportation
5.1%
Manufacturing
5.0%
Finance
2.8%
Wholesale
1.0%
Agriculture
1.0%
Information
0.8%
Occupation
Management
50.4%
Sales
16.0%
Food Prep
14.4%
Construction
9.8%
Production
9.4%
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Commute
Median Travel Time
30.4 min
Drove Alone
75.0%
Carpool
5.4%
Public Transit
1.0%
Work from Home
15.3%
Walked
2.4%
Bicycle
—
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Households & Families
Total Households
41,743
Avg. Household Size
2.00
Avg. Family Size
—
Married-Couple Households
53.6%
Single-Mother Households
—
Single-Father Households
—
Living Alone
—
Households with Children
22.7%
Multigenerational
—
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Age Distribution
Under 5
6.1%
5–9
7.1%
10–14
6.6%
15–19
7.1%
20–24
5.9%
25–34
14.0%
35–44
13.6%
45–54
12.3%
55–64
7.1%
65–74
6.4%
75–84
8.4%
85+
3.7%
Under 18: 24.0%
Working age (18–64): 76.0%
65 and over: 13.7%
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Social Characteristics
Immigration
Foreign Born
4.5%
Naturalized Citizen
59.9%
Speaks English Less Than Very Well
2.6%
Foreign-Born Origin
Asia
40.4%
Latin America
29.4%
Europe
19.2%
Africa
7.9%
Veterans & Disability
Veteran
14.1%
With a Disability
11.2%
Cognitive Difficulty
—
Ambulatory Difficulty
—
Health Insurance
Insured
96.3%
Uninsured
3.7%
Employer Insurance
—
Medicaid
—
Medicare
—
Technology & Mobility
Broadband Internet
90.9%
Has a Computer
94.9%
Same House 1 Year Ago
87.0%
Moved from Abroad
0.5%
Source: U.S. Census Bureau, ACS 5-Year Estimates, 2023
Compare St. Mary's County
Compare to another county →Where People Move From (IRS Migration Data)
Top origins of people who moved to St. Mary's County in 2023, by number of tax returns filed (IRS SOI Migration Data).
| Origin | Tax Returns | People (est.) |
|---|---|---|
| Other flows - South | 765 | 1,429 |
| Charles County | 462 | 848 |
| Calvert County | 315 | 517 |
| Other flows - West | 268 | 524 |
| Other flows - Northeast | 254 | 424 |
| Prince George's County | 231 | 441 |
| Other flows - Midwest | 117 | 199 |
| Anne Arundel County | 91 | 149 |
| San Diego County | 69 | 178 |
| Virginia Beach city | 59 | 124 |