ZIP Code 21723

ZIP Code Tabulation Area in Howard County, Maryland.

Population: 587
Median household income: $250,001
Median home value: $914,800

Covering part of Howard County, Maryland, ZIP Code 21723 has about 587 residents. Its median household income of $250,001 runs above the Howard County figure of $146,982.

From 2019 to 2023, ZIP Code 21723's population declined 22.7% from 759 to 587, while its median household income rose 8.1% from $231,172 to $250,001.

The median resident is 41.7 years old. The largest age group is 35 to 44, 24.7% of residents.

Demographics

ACS 2019–2023

Population: 587
Median age: 41.7 yrs
Median household income: $250,001
Median home value: $914,800
Median gross rent: —
Housing units: 221
Homeownership rate: 94.6%
Bachelor's degree or higher: 86.0%
Unemployment rate: 0.0%

Trends

ACS 5-year · 2019–2023

Population

759587

Median household income

$231,172$250,001

Median home value

$663,200$914,800

Year	Population	Median household income	Median home value
2019	759	$231,172	$663,200
2020	648	$233,580	$649,600
2021	725	$247,284	$690,700
2022	689	$250,001	$852,400
2023	587	$250,001	$914,800

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

Age distribution

Under 53.1%

5 to 1718.6%

18 to 242.9%

25 to 346.8%

35 to 4424.7%

45 to 5420.6%

55 to 6415.2%

65 to 744.1%

75 and over4.1%

	Count	Share
Under 5	18	3.1%
5 to 17	109	18.6%
18 to 24	17	2.9%
25 to 34	40	6.8%
35 to 44	145	24.7%
45 to 54	121	20.6%
55 to 64	89	15.2%
65 to 74	24	4.1%
75 and over	24	4.1%

Race & ethnicity

	Count	Share
White (non-Hispanic)	231	39.4%
Black or African American	15	2.6%
American Indian & Alaska Native	0	0.0%
Asian	305	52.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	7	1.2%
Two or more races	29	4.9%
Hispanic or Latino (any race)	0	0.0%

Educational attainment (age 25+)

No high school diploma0.0%

High school graduate4.7%

Some college or associate's9.3%

Bachelor's degree51.2%

Graduate or professional degree34.8%

	Count	Share
No high school diploma	0	0.0%
High school graduate	21	4.7%
Some college or associate's	41	9.3%
Bachelor's degree	227	51.2%
Graduate or professional degree	154	34.8%

Commute to work

Mean travel time to work: 33 min

Drove alone72.3%

Carpooled0.0%

Public transit0.0%

Walked3.3%

Bicycle0.0%

Worked from home24.5%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	263	72.3%
Carpooled	0	0.0%
Public transit	0	0.0%
Walked	12	3.3%
Bicycle	0	0.0%
Worked from home	89	24.5%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	12	4.4%
15 to 29 min	89	32.4%
30 to 44 min	121	44.0%
45 to 59 min	38	13.8%
60+ min	15	5.5%

Households

Average household size: 2.66
Poverty rate: 0.0% (0 of 587)

	Count	Share
Family households	209	94.6%
Nonfamily households	12	5.4%

Housing

Median year structure built: 2000

Occupancy

	Count	Share
Occupied	221	100.0%
Vacant	0	0.0%

Tenure (of occupied units)

	Count	Share
Owner-occupied	209	94.6%
Renter-occupied	12	5.4%

1-unit, detached94.6%

1-unit, attached0.0%

2 to 4 units5.4%

5 to 19 units0.0%

20 or more units0.0%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	209	94.6%
1-unit, attached	0	0.0%
2 to 4 units	12	5.4%
5 to 19 units	0	0.0%
20 or more units	0	0.0%
Mobile home & other	0	0.0%

ZIP Code 21723

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