county

St. Mary's County, MD

Demographic and economic profile of St. Mary's County, MD, sourced from the US Census Bureau (American Community Survey) via Data USA.

AI Overview

St. Mary's County is a small county of 116,469 residents with a median household income of $119,446 and GDP per capita of $71,356, figures that reflect a workforce closely tied to federal defense and naval installations in the region. The labor force participation rate stands at 68.3%, with 35.1% of residents holding a bachelor's degree or higher and unemployment at 3.8%, pointing to a relatively educated, employed base. Population grew 2.5% over five years, median home values sit at $390,900 with a 73.2% homeownership rate, and a poverty rate of just 7.4% signals a financially stable resident population.

Claude Sonnet 4.6 · generated Jul 6, 2026 · derived from cached Census, BEA & ACS data on this page

Population

116,469

Data USA · as of 2024

Median Household Income

$119,446

Data USA · as of 2024

Median Age

37.2 yrs

Data USA · as of 2024

Population Growth (5-year)

+2.5% since 2018

St. Mary's County added population at this rate over the prior 5-year ACS5 window.

Demographics

Race & Ethnicity

  • White Alone82,070 (71.3%)
  • Black or African American Alone16,847 (14.6%)
  • Two Races Excluding Some Other Race, & Three or More Races6,015 (5.2%)
  • Two Races Including Some Other Race4,630 (4.0%)
  • Asian Alone3,062 (2.7%)
  • Some Other Race Alone2,366 (2.1%)

Data USA · as of 2024

Top Languages Spoken at Home

  1. 1.Spanish2,792
  2. 2.German or other West Germanic1,124
  3. 3.Tagalog (incl. Filipino)978
  4. 4.Other Indo-European617
  5. 5.Other Asian and Pacific Island411

Census ACS · as of 2023

Population Under 18

24.0%

Census ACS · as of 2023

Working-Age (18–64)

62.2%

Census ACS · as of 2023

Population 65 and Over

13.7%

Census ACS · as of 2023

Foreign-Born Population

4.3%

Data USA · as of 2024

Veterans

12,208

Data USA · as of 2024

Economy

GDP per Capita

$71,356

Data USA · as of 2023

Cost of Living Index

—

Not yet cached

Per Capita Income

$51,358

Census ACS · as of 2023

Unemployment Rate

3.8%

Census ACS · as of 2023

Poverty Rate

7.4%

Census ACS · as of 2023

Top Industries

  1. 1.Public Administration (Group)11,675
  2. 2.Educational Services, & Health Care & Social Assistance10,687
  3. 3.Professional, Scientific, & Management, & Administrative & Waste Management Services9,905
  4. 4.Construction (Group)4,860
  5. 5.Retail Trade (Group)4,852

Data USA · as of 2024

Top Occupations

  1. 1.Management, Business, Science, & Arts Occupations30,170
  2. 2.Sales & Office Occupations8,684
  3. 3.Service Occupations7,905
  4. 4.Natural Resources, Construction, & Maintenance Occupations5,418
  5. 5.Production, Transportation, & Material Moving Occupations5,039

Data USA · as of 2024

Specialized Industries (Location Quotient)

  1. 1.Public Administration (LQ 4.03×)10,859
  2. 2.Professional, Scientific, & Management (LQ 1.42×)10,020
  3. 3.Construction (LQ 1.38×)5,433
  4. 4.Other Services (LQ 0.90×)2,419
  5. 5.Transportation, Warehousing, & Utilities (LQ 0.88×)2,921

Census ACS · as of 2023

Housing

Median Home Value

$390,900

Census ACS · as of 2023

Median Gross Rent

$1,692/mo

Census ACS · as of 2023

Homeownership Rate

73.2%

Data USA · as of 2024

Home Value Distribution

  • $300,000 to $399,9998,060 (26.0%)
  • $500,000 to $749,9996,969 (22.4%)
  • $400,000 to $499,9996,644 (21.4%)
  • $250,000 to $299,9992,434 (7.8%)
  • $200,000 to $249,9992,076 (6.7%)
  • $750,000 to $999,9991,502 (4.8%)

Data USA · as of 2024

Education

Bachelor's Degree or Higher

35.1%

Census ACS · as of 2023

High School Diploma or Higher

92.4%

Census ACS · as of 2023

Workforce

Labor Force Participation

68.3%

Census ACS · as of 2023

Median Worker Earnings

$62,595

Census ACS · as of 2023

Mean Commute Time

29.9 min

Data USA · as of 2024

Households Without a Vehicle

3.7%

Census ACS · as of 2023

How People Get to Work

  • Drove Alone42,647 (72.2%)
  • Worked At Home10,354 (17.5%)
  • Carpooled3,373 (5.7%)
  • Walked1,683 (2.8%)
  • Public Transit527 (0.9%)
  • Other345 (0.6%)

Data USA · as of 2024

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Data: US Census Bureau American Community Survey, served via Data USA and the Census Bureau API. See each metric tile for the specific dataset.