Ridge, MD · standard
ZIP Code 20680
St. Mary's County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,119
- 70/sq mi Moderate-density area
- $397,500
- Median home value Above-median home value
- 29.0%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Ridge pairs upper-quartile home values, in a rural, renter-heavy area.
- Top 21%
- home value, US ZIPs
- 70
- people per sq mi
- 40%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20680 against every reporting US ZIP.
ZIP code 20680 is a sparsely populated ZIP (a standard USPS delivery area) in Ridge, St. Mary's County, Maryland, home to just 1,119 residents across 16.0 square miles, a density of 70 people per square mile, in the New York time zone.
Median household income is not on file for ZIP 20680, but per-capita income is $25,412. The poverty rate is 37.7%, so the area-level income figures should not be treated as typical household experience. Median home value is $397,500 (11% below the average Maryland ZIP) and median rent is $1,592; 39.9% of occupied homes are owner-occupied.
Educational attainment sits below the national norm: 29.0% of adults hold a bachelor's degree or higher, the median age is 33.6, and the average commute is -. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in St. Mary's County, so 20680 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 20680, Ridge, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,119
Population
16.0
Area (sq mi)
70
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20680?
33.6
Median Age
36.3%
Male
63.7%
Female
0.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$25,412
Per Capita Income
37.7%
Poverty Rate
0.5%
Unemployment Rate
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
288housing units
288
Total Housing Units
288
Occupied Units
0
Vacant Units
2.29
Avg Household Size
Occupancy Type
$397,500
Median Home Value
-11% vs state ZIP avg
$1,592
Median Rent
1962
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 17 business establishments in ZIP 20680, employing approximately 126 people with a combined annual payroll of $4,326,000.
17
Businesses
126
Employees
$4.3M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Accommodation and food services | 4 | 23.5% |
| Retail trade | 3 | 17.6% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 20680 vs 20628 →
ZIP 20680 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20653
Lexington Park (20653)
24,481 residents
- 20634 5,927
Great Mills (20634)
5,927 residents
- 20686 1,332
Saint Marys City (20686)
1,332 residents
- 20684 1,125
Saint Inigoes (20684)
1,125 residents
- 20680 1,119
Ridge (20680)
1,119 residents
- 20692 1,051
Valley Lee (20692)
1,051 residents
- 20674 830
Piney Point (20674)
830 residents
- 20628 594
Dameron (20628)
594 residents
- 20667 494
Park Hall (20667)
494 residents
What this shows Among its immediate neighbors, ZIP 20680 ranks #5 by population - useful context the national average alone can't give.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20628 | Dameron, MD | 594 | 2.7 mi |
| 20687 | Scotland, MD | 313 | 2.9 mi |
| 20684 | Saint Inigoes, MD | 1,125 | 2.8 mi |
| 20686 | Saint Marys City, MD | 1,332 | 5.5 mi |
| 20630 | Drayden, MD | 348 | 6.4 mi |
| 20674 | Piney Point, MD | 830 | 7.1 mi |
| 20667 | Park Hall, MD | 494 | 8.1 mi |
| 20653 | Lexington Park, MD | 24,481 | 8.7 mi |
| 20692 | Valley Lee, MD | 1,051 | 8.5 mi |
| 20634 | Great Mills, MD | 5,927 | 11.2 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 20680, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,119 here; floor ≥1,000).
More ZIP Codes in St. Mary's County
Related Areas
Frequently Asked Questions
What county is ZIP code 20680 in?
ZIP code 20680 (Ridge) is located in St. Mary's County, Maryland. St. Mary's County contains multiple ZIP codes, see the full list at /counties/st-marys-md.
What is the population of ZIP code 20680?
ZIP code 20680 in Ridge, MD has a population of 1,119 according to the Census Bureau ACS 2023 estimates.
What is the average home value in ZIP 20680?
The median home value in ZIP 20680 is $397,500, which is 43% above the national average of $278,155.
What is the demographic makeup of ZIP 20680?
The largest racial group in ZIP 20680 is White at 70.9%.
How many businesses are in ZIP code 20680?
ZIP code 20680 has 17 business establishments employing approximately 126 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 20680?
In ZIP code 20680, 58.6% of residents aged 25+ have a high school diploma or higher, and 29.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 20680?
In ZIP code 20680, approximately 39.9% of occupied housing units are owner-occupied and 60.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 20680?
The poverty rate in ZIP code 20680 is 37.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 20680's numbers, next.
- See how ZIP 20680 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Ridge, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.