ZIP 20634 · Great Mills
Who lives in ZIP code 20634 (Great Mills, MD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Great Mills, MD · St. Mary's County
uszips 2026
People7,088
Median age32.0
Household income$139,375
Home value$343,864
Median rent$1,814/mo
Poverty4.7%
College degree+40.2%
Commute24 min
Place
- Metro area
- Lexington Park, MD
- Wider region
- Washington-Baltimore-Arlington, DC-MD-VA-WV-PA
- Time zone
- Eastern
- Density
- 391 / sq mi
- Housing units
- 2,694
County
Share of the ZIP's people in each county.
Age mix
8.4% are 65 or older; 75.3% are adults.
Household income
63.3% of households earn $100K+. Median per person: $71,650.
Education (adults 25+)
52.0% of degrees are in STEM fields.
Race
8.5% Hispanic or Latino (of any race).
Households & family
- Married
- 46.3%
- Never married
- 38.6%
- Divorced
- 12.5%
- Widowed
- 2.5%
- Family size
- 3.29
- Dual-income families
- 65.8%
Housing
- Own their home
- 65.4%
- Rent burden
- 22.3%
- Men / women
- 49% / 51%
Work
- In labor force
- 81.8%
- Unemployment
- 1.3%
- Self-employed
- 8.0%
- Farmers
- 0.0%
Community
- Charitable givers
- 35.7%
- Veterans
- 19.0%
- With a disability
- 9.8%
- No health insurance
- 1.0%
- Limited English
- 2.8%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.