US ZIP Code
20680

Ridge, MD

St. Mary's County  ·  Maryland

● Active
👥 702 Population ↓ 25% since 2019
💰 $81,125 Median HH Income
≈ Avg
🎂 34.4 Median Age ↓ 8% since 2019
🏠 $392,400 Median Home Value
▲ 41% above avg ↑ 12% since 2019
🎓 40.2% College Grads
≈ Avg
📊 0.3% Unemployment
▼ 93% below avg ↓ 94% since 2019
ZIP Code Details
ZIP Code20680
CityRidge
StateMaryland (MD)
CountySt. Mary's County
Area Code227/240/301
Elevation81 ft
Latitude38.10913
Longitude-76.385886
TimezoneNew York (DST)
FIPS24037
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 43.3% (304) Female 56.7% (398) ♀

Race & Ethnicity

White: 69.4%Hispanic: 2.3%Black: 13%Race
White69.4%
Hispanic2.3%
Black13.0%

Age Breakdown

Under 5
7%
5–17
19%
18–24
2%
25–44
28%
45–64
18%
65+
3%

Key Indicators

Median Age34.4 yrs ↓ 8% since 2019
Avg Household Size2.48
Below Poverty13.5% ▲ 35% above avg
College Grads40.2% ≈ Avg
Unemployment0.3% ▼ 93% below avg
HS Graduate144 (28.5%)
Some College113 (22.4%)
Associates45 (8.9%)
Bachelors45 (8.9%)
Graduate Degree158 (31.3%)

Education

HS Grad: 28.5%Some College: 22.4%Associates: 8.9%Bachelors: 8.9%Graduate: 31.3%Edu
HS Grad28.5%
Some College22.4%
Associates8.9%
Bachelors8.9%
Graduate31.3%
Housing & Income

Housing Tenure

Owner: 72%Renter: 28%Tenure
Owner72.0%
Renter28.0%

Home Value Distribution

$150k–200k
8%
$200k–300k
2%
$300k–500k
52%
Over $500k
37%

Financials

Median HH Income$81,125 ≈ Avg
Median Home Value$392,400 ▲ 41% above avg ↑ 12% since 2019
Home/Income Ratio4.8x (nat avg ~3.5x)
Total Units331
Vacant Units49
Avg HH Size2.48

Income Distribution

Under $25k
21%
$25k–50k
13%
$50k–75k
5%
$75k–100k
15%
$100k–150k
30%
Over $200k
16%
Employment & Commute

How People Get to Work

Drove Alone
69%
Work From Home
31%

Commute Time

Under 15 min
66%
15–30 min
20%
30–45 min
7%
Over 45 min
6%
Housing Stock

Year Built

Before 1940
15%
1940s–1950s
16%
1960s–1970s
1%
1980s–1990s
11%
2000+
57%

Summary

Total Units331
Vacant49
Owner Occupied72.0%
Renter Occupied28.0%
Avg HH Size2.48
Frequently Asked Questions
ZIP code 20680 is in Ridge, MD, in St. Mary's County.
ZIP code 20680 is located in Maryland (MD).
ZIP code 20680 is in St. Mary's County, MD.
ZIP 20680 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 20680 is 702 people (ACS 2023).
The median household income in ZIP code 20680 is $81,125 (ACS 2023).
The median home value in ZIP 20680 is $392,400 (ACS 2023).
About ZIP Code 20680

ZIP code 20680 is located in Ridge, Maryland, within St. Mary's County. With a population of 702, this is a sparsely populated ZIP code with a relatively young community — the median age is 34.4 years. Economically, 20680 is a middle-income ZIP code: the median household income of $81,125 is near the national average.

Real estate in ZIP code 20680 represents a mid-range housing market. The median home value of $392,400 is above the national average. Homeownership is strong here — 72.0% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 12% since 2019.

The population of 20680 is majority White (69.37%). Residents are well-educated — 40.2% hold a bachelor's degree or higher, which is near the national average. Poverty affects some residents at 13.5%.

The unemployment rate in 20680 stands at 0.3%, which is well below the national average. A notably high share of workers — 29% — work from home, reflecting the professional makeup of the area. As in most parts of the country, driving alone is the dominant commute mode at 66%.

Overall, ZIP code 20680 in Ridge, MD is characterized as middle-income, well-educated, a relatively young community, and predominantly owner-occupied. With 702 residents, a median household income of $81,125, and a median home value of $392,400, it offers a clear picture of life in this part of Maryland.