What city is ZIP code 21638?

ZIP code 21638 is in Grasonville, MD (Queen Anne's County).

What county is ZIP code 21638 in?

ZIP code 21638 is mostly in Queen Anne's County, Maryland.

How many people live in ZIP code 21638?

About 5,420 people live in the 21638 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 21638

Grasonville, MD, Queen Anne's County

Population

5,420

Land area

9.9sq mi

People per sq mi

548

City

Grasonville

ZIP 21638 and nearby ZIP codes

Full map

ZIP 21638 at a glance

The median household income is $140,086, 35% above the Maryland median of $103,678.
A typical owner-occupied home is valued at $569,200 (36% above Maryland) and median rent is $1,692 a month.

Local data for ZIP 21638

Counts from official public data

Housing and community stats

ZIP 21638, American Community Survey 2020-2024

Full profile

Median household income

$140,086

Poverty rate

8.4%

Median home value

$569,200

Prices -8.4% in a year

Median rent

$1,692/mo

Homeownership

84.5%

Bachelor's or higher

46.7%

Median age

42.3

Average commute

35.2 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

125

ZIP Business Patterns 2023

Employees

1,310

$61M annual payroll

PPP loans

$16.6M

190 loans

Campaign donations

$43.8K

31% D, 20% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 21638, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: drought

Storm events since 1996

869

Countywide, mostly thunderstorm wind

Flood insurance policies

1,675

7.9% of homes, county

July high / Jan low

87° / 29°F

46.9 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 21638, CDC PLACES estimates

All 40 measures

Obesity

30.2%

U.S. 33.3% -3.1 pts

Diabetes

12.0%

U.S. 12.1% about the same

Smoking

12.0%

U.S. 12.8% -0.8 pts

Uninsured (18-64)

7.1%

U.S. 11.1% -4.0 pts

Frequently asked questions

What city is ZIP code 21638?: ZIP code 21638 is in Grasonville, MD (Queen Anne's County).
What county is ZIP code 21638 in?: ZIP code 21638 is mostly in Queen Anne's County, Maryland.
How many people live in ZIP code 21638?: About 5,420 people live in the 21638 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.