ZIP Code Tabulation Area · Maryland

ZIP Code 21798: Frederick County, MD

ZIP Code 21798 (Frederick County, Maryland) has an estimated 2,928 residents in 929 households. The median household income is $116,607, the median home value is $498,400 and the median gross rent is $1,406/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Some estimates have a large margin of error. One figure for this ZIP (gross rent) is marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

2,928

Margin of error ±559

Median household income

$116,607

Margin of error ±$35,479

Median home value

$498,400

Margin of error ±$41,941

Median gross rent

$1,406/mo*

Margin of error ±$862· estimate has a large margin of error

Median age

41.3 yrs

Margin of error ±4.4 yrs

Mean travel time to work

30.5 min

Margin of error ±11.0 min

How ZIP 21798 compares with Maryland and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 2179841.3 yrsMaryland39.4 yrsUnited States38.9 yrs

Median household income

ZIP 21798$116,607Maryland$103,678United States$80,734

Per capita income

ZIP 21798$50,330Maryland$52,979United States$44,673

Poverty rate

ZIP 2179814.8%Maryland9.4%United States12.5%

Unemployment rate

ZIP 217984.8%Maryland4.9%United States5.2%

Bachelor's degree or higher

ZIP 2179837.4%Maryland43.4%United States35.7%

Median home value

ZIP 21798$498,400Maryland$419,900United States$332,700

Median gross rent

ZIP 21798$1,406/mo*Maryland$1,705/moUnited States$1,413/mo

Owner-occupied homes

ZIP 2179879.3%Maryland67.6%United States65.2%

Mean travel time to work

ZIP 2179830.5 minMaryland31.1 minUnited States26.4 min

Worked from home

ZIP 2179819.6%Maryland19.3%United States15.1%

All figures for ZIP 21798

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 21798 — ACS 2020–2024 5-year estimates
MeasureZIP 21798Margin of errorMarylandUnited States
Total population2,928±5596,206,011334,922,499
Median age41.3 yrs±4.4 yrs39.4 yrs38.9 yrs
Households929±1362,362,928129,227,496
Median household income$116,607±$35,479$103,678$80,734
Per capita income$50,330±$8,122$52,979$44,673
Poverty rate14.8%±8.1 pts9.4%12.5%
Unemployment rate4.8%±3.9 pts4.9%5.2%
Bachelor's degree or higher37.4%±4.6 pts43.4%35.7%
Median home value$498,400±$41,941$419,900$332,700
Median gross rent$1,406/mo*±$862$1,705/mo$1,413/mo
Owner-occupied homes79.3%±5.1 pts67.6%65.2%
Mean travel time to work30.5 min±11.0 min31.1 min26.4 min
Worked from home19.6%±7.3 pts19.3%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 21798
GroupZIP 21798MarylandUnited States
White alone, not Hispanic or Latino71.1%46.6%57.4%
Black or African American alone, not Hispanic or Latino11.0%28.9%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.1%0.5%
Asian alone, not Hispanic or Latino0.6%6.5%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.0%0.7%0.6%
Two or more races, not Hispanic or Latino8.4%4.6%4.3%
Hispanic or Latino (of any race)8.8%12.5%19.3%

Where ZIP 21798 is

State
Maryland
Main county
Frederick County
Largest overlapping place
Woodsboro (4% of the ZIP's land area)
Land area
16.30 sq mi· about 180 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Frederick County

21704 Frederick County, MD21705 Frederick, MD21710 Frederick County, MD21714 Braddock Heights, MD21716 Brunswick, MD21717 Buckeystown, MD21718 Burkittsville, MD21727 Frederick County, MD21754 Frederick County, MD21755 Frederick County, MD21758 Frederick County, MD21762 Libertytown, MD21769 Frederick County, MD21770 Green Valley, MD21771 Frederick County, MD21773 Frederick County, MD21774 Linganore, MD21777 Point of Rocks, MD21778 Frederick County, MD21780 Frederick County, MD21788 Frederick County, MD21790 Frederick County, MD21791 Frederick County, MD21793 Walkersville, MD

See every ZIP code in Maryland, or compare ZIP 21798 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.