PlainZIP

Saint Marys City, MD · standard

ZIP Code 20686

St. Mary's County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

1,332
475/sq mi
100.0%
Bachelor's or higher

ZIP code 20686 is a sparsely populated ZIP (a standard USPS delivery area) in Saint Marys City, St. Mary's County, Maryland, home to just 1,332 residents across 2.8 square miles, a density of 475 people per square mile, in the New York time zone.

Median household income is not on file for ZIP 20686, but per-capita income is $4,431. - of residents live below the poverty line, and the unemployment rate reads 1.9%. Housing costs here run - for a typical home value, with rent averaging - a month; - of homes are owner-occupied.

This is a highly-educated ZIP: 100.0% of adults hold a bachelor's degree or higher, the median age is 20.3, and the average commute is -. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing St. Mary's County, letting you compare 20686 to its immediate surroundings rather than a national baseline alone.

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 20686, Saint Marys City, 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

1,332

Population

2.8

Area (sq mi)

475

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 20686?

20.3

Median Age

35.3%

Male

64.7%

Female

4.2%

Foreign-Born

White 79.2%
African American 10.3%
Asian 5.5%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.7%
Hispanic or Latino 3.2%

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?

$4,431

Per Capita Income

1.9%

Unemployment Rate

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 100.0%
Bachelor's Degree or Higher 100.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

0

Total Housing Units

0

Occupied Units

0

Vacant Units

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 6 business establishments in ZIP 20686, employing approximately 72 people with a combined annual payroll of $1,680,000.

6

Businesses

72

Employees

$1.7M

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Accommodation and food services 3 50.0%

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 20686 vs 20667 →

ZIP 20686 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 20686 ranks #2 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
20667 Park Hall, MD 494 2.7 mi
20653 Lexington Park, MD 24,481 3.5 mi
20630 Drayden, MD 348 2.5 mi
20684 Saint Inigoes, MD 1,125 2.8 mi
20692 Valley Lee, MD 1,051 3.8 mi
20628 Dameron, MD 594 4.8 mi
20670 Patuxent River, MD 1,014 7.1 mi
20674 Piney Point, MD 830 4.9 mi
20690 Tall Timbers, MD 740 5.5 mi
20680 Ridge, MD 1,119 5.5 mi

More ZIP Codes in St. Mary's County

20653 standard
Lexington Park, MD
Pop: 24,481
20659 standard
Mechanicsville, MD
Pop: 23,498
20650 standard
Leonardtown, MD
Pop: 13,717
20619 standard
California, MD
Pop: 10,503
20636 standard
Hollywood, MD
Pop: 9,937
20634 standard
Great Mills, MD
Pop: 5,927

Related Areas

St. Mary's County Saint Marys City, MD Maryland

Frequently Asked Questions

What county is ZIP code 20686 in? ▼
ZIP code 20686 (Saint Marys City) 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 20686? ▼
ZIP code 20686 in Saint Marys City, MD has a population of 1,332 according to the Census Bureau ACS 2023 estimates.
What is the demographic makeup of ZIP 20686? ▼
The largest racial group in ZIP 20686 is White at 79.2%. Hispanic or Latino residents make up 3.2% of the population.
How many businesses are in ZIP code 20686? ▼
ZIP code 20686 has 6 business establishments employing approximately 72 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 20686? ▼
In ZIP code 20686, 100.0% of residents aged 25+ have a high school diploma or higher, and 100.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).

Read our methodology to see how this data is sourced, computed, and verified.