US Census Data

ZIP Code 21704

ZIP Code Tabulation Area in Frederick County, Maryland.

Population
19,623
+16.2%’19–’23
Median household income
$164,457
+10.4%’19–’23
Median home value
$585,900
+18.7%’19–’23

ZIP Code 21704 is a ZIP Code Tabulation Area in Frederick County, Maryland, home to about 19,623 residents. At $164,457, its median household income sits above Frederick County's $120,458.

Between 2019 and 2023, ZIP Code 21704's population grew 16.2% from 16,887 to 19,623, while its median gross rent rose 19.9% from $1,998 to $2,395.

54.6% of homes are single-family detached houses. The typical home was built around 2007.

Demographics

ACS 2019–2023
Population
19,623
Median age
38.4 yrs
Median household income
$164,457
Median home value
$585,900
Median gross rent
$2,395
Housing units
6,230
Homeownership rate
81.3%
Bachelor's degree or higher
58.1%
Unemployment rate
3.4%

Trends

ACS 5-year · 2019–2023
Population
16,88719,623
Median household income
$148,955$164,457
Median home value
$493,500$585,900
Median gross rent
$1,998$2,395
YearPopulationMedian household incomeMedian home valueMedian gross rent
201916,887$148,955$493,500$1,998
202016,478$148,914$511,200$2,188
202117,372$152,330$513,500$2,117
202218,473$162,437$555,200$2,298
202319,623$164,457$585,900$2,395

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

CountShare
Under 51,2736.5%
5 to 174,97425.3%
18 to 249975.1%
25 to 341,3847.1%
35 to 443,82319.5%
45 to 543,08015.7%
55 to 642,02710.3%
65 to 741,2526.4%
75 and over8134.1%

Race & ethnicity

CountShare
White (non-Hispanic)10,22452.1%
Black or African American2,32711.9%
American Indian & Alaska Native380.2%
Asian3,27116.7%
Native Hawaiian & Pacific Islander450.2%
Some other race410.2%
Two or more races1,0325.3%
Hispanic or Latino (any race)2,64513.5%

Educational attainment (age 25+)

CountShare
No high school diploma4763.8%
High school graduate2,31618.7%
Some college or associate's2,38919.3%
Bachelor's degree3,61229.2%
Graduate or professional degree3,58629.0%

Commute to work

Mean travel time to work
36 min

How workers get to work

CountShare
Drove alone6,27065.1%
Carpooled4424.6%
Public transit310.3%
Walked1311.4%
Bicycle70.1%
Worked from home2,63227.3%
Other means1141.2%

Travel time

CountShare
Under 15 min1,30718.7%
15 to 29 min1,81025.9%
30 to 44 min1,32719.0%
45 to 59 min1,10715.8%
60+ min1,44420.6%

Households

Average household size
3.15
Poverty rate
3.2% (616 of 19,338)
CountShare
Family households5,03882.1%
Nonfamily households1,09817.9%

Housing

Median year structure built
2007

Occupancy

CountShare
Occupied6,13698.5%
Vacant941.5%

Tenure (of occupied units)

CountShare
Owner-occupied4,98981.3%
Renter-occupied1,14718.7%

Units in structure

CountShare
1-unit, detached3,40154.6%
1-unit, attached2,18535.1%
2 to 4 units1061.7%
5 to 19 units2063.3%
20 or more units2724.4%
Mobile home & other601.0%

Geography

ZCTA
21704
Land area
27 sq mi
Water area
0.17 sq mi
Center point
39.3549, -77.3759

Counties this ZIP covers

1

Compare with nearby ZIP codes

6

National ZIP rankings

21

Nearby ZIP codes

8