What city is ZIP code 21539?

ZIP code 21539 is in Klondike, MD (Allegany County).

What county is ZIP code 21539 in?

ZIP code 21539 is mostly in Allegany County, Maryland.

How many people live in ZIP code 21539?

About 1,975 people live in the 21539 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 21539

Klondike, MD, Allegany County

Population

1,975

Land area

37.1sq mi

People per sq mi

City

Klondike

ZIP 21539 and nearby ZIP codes

Full map

ZIP 21539 at a glance

ZIP 21539 (Klondike) is 92% less dense than Maryland as a whole.
The median household income is $57,708, 44% below the Maryland median of $103,678.
A typical owner-occupied home is valued at $130,200 (69% below Maryland) and median rent is $874 a month.

Local data for ZIP 21539

Counts from official public data

Housing and community stats

ZIP 21539, American Community Survey 2020-2024

Full profile

Median household income

$57,708

Poverty rate

19.5%

Median home value

$130,200

Median rent

$874/mo

Homeownership

63.6%

Bachelor's or higher

16.8%

Median age

45.6

Average commute

26.7 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

311

$10.1M annual payroll

PPP loans

$2.2M

42 loans

Campaign donations

$1,433

15% D, 6% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 21539, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: landslide

Storm events since 1996

1,095

Countywide, mostly winter weather

Flood insurance policies

135

0.5% of homes, county

July high / Jan low

79° / 19°F

45.2 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 21539, CDC PLACES estimates

All 40 measures

Obesity

35.6%

U.S. 33.3% +2.3 pts

Diabetes

13.2%

U.S. 12.1% +1.1 pts

Smoking

17.0%

U.S. 12.8% +4.2 pts

Uninsured (18-64)

8.6%

U.S. 11.1% -2.5 pts

Frequently asked questions

What city is ZIP code 21539?: ZIP code 21539 is in Klondike, MD (Allegany County).
What county is ZIP code 21539 in?: ZIP code 21539 is mostly in Allegany County, Maryland.
How many people live in ZIP code 21539?: About 1,975 people live in the 21539 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.