Residential delivery area · Maryland
ZIP Code 20685: Saint Leonard, MD
ZIP code 20685 uses the postal name Saint Leonard, Maryland and lies entirely in Calvert County (Census 2020 ZIP-county file). About 6,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $119,135 (Census Bureau, ACS 2020-2024). By Census place, its land lies in St. Leonard (10%), Long Beach (7%) and Calvert Beach (4%); 79% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Leonard · its only residential ZIP
- County
- Calvert County
- Census places
- St. Leonard (10%) census-designated place; Long Beach (7%) census-designated place; Calvert Beach (4%) census-designated place
- Metro area
- Lexington Park, MD
- House district
- MD-5 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 22.9 sq mi · 300 people per sq mi
Where is ZIP code 20685?
20685 centers on 38.434°, -76.529° and covers 22.9 square miles of land plus 8.3 of water. It borders 5 ZIP codes: 20615, 20676, 20657, 20636, 20678.
The map draws ZIP code areas only. For the streets inside 20685, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 20685 compare with the rest of Calvert County?
| Measure | 20685 | In Calvert County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 6,866 | 7th of 14 | 210th of 477 |
| Median household income | $119k | 7th of 9 | 125th of 293 |
| Median home value | $450k | 7th of 11 | 140th of 320 |
Its median household income is higher than in 90% of U.S. residential ZIP codes, and it is denser than 67% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 20685?
The 2020 Census counted 6,648 people in 20685; the ACS, which samples households over 2020-2024, estimates 6,866. Between the 2010 and 2020 censuses its population grew 2.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 6,866±1,142 (90% margin)
- 2020 Census count
- 6,648+2.7% since 2010 (6,471)
- Households
- 2,394
- Median age
- 42.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 20685?
Of the 6,866 people the ACS estimates in 20685, 20.6% are under 18 and 16.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (75.3%), then Black (not Hispanic) (14.4%).
- Under 1820.6%
- 18 to 6462.9%
- 65 and older16.5%
- White, not Hispanic75.3%
- Black, not Hispanic14.4%
- Other or two or more7.4%
- Hispanic or Latino2.6%
- Asian, not Hispanic0.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 20685 earn?
Median household income is $119,135 (ACS 2020-2024), the 7th highest of the 9 ranked ZIP codes in Calvert County. It is not measurably different from 2015-2019 ($132,295 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $119,135±$21,888
- Income per person
- $56,678
- Below the poverty line
- 3.3%
- Unemployed (of the labor force)
- 1.1%
- Adults 25+ with a bachelor's degree
- 24.4%
- Adjusted gross income per tax return, 2022
- $102,9433,350 returns; wages 70% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 20685?
FHFA's house price index for 20685, built from repeat sales and appraisals of the same homes, rose 59% from 2015 to 2025 and rose 40% from 2020 to 2025, and moved +12.4% in 2025.
- Median home value (owners' estimate)
- $450,400
- Median gross rent
- $1,906
- Homes owned by their occupants
- 94.8%
- Housing units
- 2,676
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 20685?
72 business establishments had a location in this ZIP code in 2023, 3 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction21
- Administrative and support and waste management and remediation services10
- Retail trade8
- Other services (except public administration)7
- Health care and social assistance6
- Professional, scientific, and technical services5
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 20685?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20615 | Broomes Island | 460 | – | 1.9 mi |
| 20676 | Port Republic | 3,218 | $157k | 3.8 mi |
| 20657 | Lusby | 20,699 | $116k | 5.9 mi |
| 20636 | Hollywood | 10,486 | $164k | 6.1 mi |
| 20678 | Prince Frederick | 12,752 | $126k | 7.2 mi |
| 20629 | Dowell | 1,150 | $87k | 7.4 mi (near) |
| 20688 | Solomons | 1,290 | $103k | 8.2 mi (near) |
| 20612 | Benedict | 148 | $41k | 9.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.