What city is ZIP code 20861?

ZIP code 20861 is in Ashton-Sandy Spring, MD (Montgomery County).

What county is ZIP code 20861 in?

ZIP code 20861 is mostly in Montgomery County, Maryland.

How many people live in ZIP code 20861?

About 2,890 people live in the 20861 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 20861

Ashton-Sandy Spring, MD, Montgomery County

Population

2,890

Land area

5.2sq mi

People per sq mi

558

City

Ashton-Sandy Spring

ZIP 20861 and nearby ZIP codes

Full map

ZIP 20861 at a glance

Households here earn a median of $163,438 a year, 58% more than the Maryland figure of $103,678.
A typical owner-occupied home is valued at $852,700 (about 2 times the Maryland figure).

Local data for ZIP 20861

Counts from official public data

Housing and community stats

ZIP 20861, American Community Survey 2020-2024

Full profile

Median household income

$163,438

Poverty rate

6.5%

Median home value

$852,700

Prices -0.3% in a year

Homeownership

98.5%

Bachelor's or higher

77.4%

Median age

51.0

Average commute

30.9 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

586

$37.9M annual payroll

PPP loans

$10.1M

115 loans

Campaign donations

$55.2K

38% D, 17% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 20861, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: winter weather

Storm events since 1996

1,849

Countywide, mostly thunderstorm wind

Flood insurance policies

2,029

0.8% of homes, county

July high / Jan low

89° / 26°F

47.5 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 20861, CDC PLACES estimates

All 40 measures

Obesity

24.6%

U.S. 33.3% -8.7 pts

Diabetes

11.2%

U.S. 12.1% -0.9 pts

Smoking

7.2%

U.S. 12.8% -5.6 pts

Uninsured (18-64)

6.3%

U.S. 11.1% -4.8 pts

Frequently asked questions

What city is ZIP code 20861?: ZIP code 20861 is in Ashton-Sandy Spring, MD (Montgomery County).
What county is ZIP code 20861 in?: ZIP code 20861 is mostly in Montgomery County, Maryland.
How many people live in ZIP code 20861?: About 2,890 people live in the 20861 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.