ZIP Code 21738

ZIP Code Tabulation Area in Howard County, Maryland.

Population: 3,668
Median household income: $230,429
Median home value: $889,100

Covering part of Howard County, Maryland, ZIP Code 21738 has about 3,668 residents. The median household income of $230,429 is above the Howard County median ($146,982).

From 2019 to 2023, ZIP Code 21738's population declined 4.2% from 3,827 to 3,668, while its median household income rose 27.1% from $181,364 to $230,429.

75.9% of adults 25 and older hold a bachelor's degree or higher. Owners occupy 98.6% of the area's occupied homes.

Demographics

ACS 2019–2023

Population: 3,668
Median age: 47.0 yrs
Median household income: $230,429
Median home value: $889,100
Median gross rent: —
Housing units: 1,166
Homeownership rate: 98.6%
Bachelor's degree or higher: 75.9%
Unemployment rate: 2.4%

Trends

ACS 5-year · 2019–2023

Population

3,8273,668

Median household income

$181,364$230,429

Median home value

$708,100$889,100

Year	Population	Median household income	Median home value
2019	3,827	$181,364	$708,100
2020	3,861	$199,009	$706,500
2021	4,185	$230,250	$715,100
2022	3,786	$239,821	$837,300
2023	3,668	$230,429	$889,100

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

Age distribution

Under 54.1%

5 to 1721.1%

18 to 249.4%

25 to 343.4%

35 to 448.7%

45 to 5419.4%

55 to 6411.8%

65 to 7412.1%

75 and over10.0%

	Count	Share
Under 5	152	4.1%
5 to 17	774	21.1%
18 to 24	346	9.4%
25 to 34	123	3.4%
35 to 44	320	8.7%
45 to 54	711	19.4%
55 to 64	433	11.8%
65 to 74	443	12.1%
75 and over	366	10.0%

Race & ethnicity

	Count	Share
White (non-Hispanic)	3,202	87.3%
Black or African American	82	2.2%
American Indian & Alaska Native	0	0.0%
Asian	215	5.9%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	8	0.2%
Two or more races	144	3.9%
Hispanic or Latino (any race)	17	0.5%

Educational attainment (age 25+)

No high school diploma2.0%

High school graduate7.8%

Some college or associate's14.3%

Bachelor's degree33.8%

Graduate or professional degree42.0%

	Count	Share
No high school diploma	49	2.0%
High school graduate	187	7.8%
Some college or associate's	342	14.3%
Bachelor's degree	811	33.8%
Graduate or professional degree	1,007	42.0%

Commute to work

Mean travel time to work: 33 min

Drove alone63.6%

Carpooled11.4%

Public transit0.0%

Walked0.0%

Bicycle0.0%

Worked from home23.9%

Other means1.1%

How workers get to work

	Count	Share
Drove alone	1,097	63.6%
Carpooled	196	11.4%
Public transit	0	0.0%
Walked	0	0.0%
Bicycle	0	0.0%
Worked from home	413	23.9%
Other means	19	1.1%

Travel time

	Count	Share
Under 15 min	155	11.8%
15 to 29 min	410	31.3%
30 to 44 min	375	28.6%
45 to 59 min	210	16.0%
60+ min	162	12.3%

Households

Average household size: 3.15
Poverty rate: 3.0% (111 of 3,668)

	Count	Share
Family households	1,046	89.7%
Nonfamily households	120	10.3%

Housing

Median year structure built: 1991

Occupancy

	Count	Share
Occupied	1,166	100.0%
Vacant	0	0.0%

Tenure (of occupied units)

	Count	Share
Owner-occupied	1,150	98.6%
Renter-occupied	16	1.4%

1-unit, detached94.6%

1-unit, attached2.4%

2 to 4 units0.0%

5 to 19 units0.0%

20 or more units3.0%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	1,103	94.6%
1-unit, attached	28	2.4%
2 to 4 units	0	0.0%
5 to 19 units	0	0.0%
20 or more units	35	3.0%
Mobile home & other	0	0.0%

ZIP Code 21738

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes