ZIP profile

21104

ZIP code 21104 is located around Maryland in Howard County with an estimated population of 6,052 and a median household income of $191,804.

Howard County Maryland

Population

6.1K

Estimated resident population.

Median income

$191,804

Estimated median household income.

Median rent

$1,384

Estimated median gross rent.

Median home value

$680,200

Estimated owner-occupied home value.

ZIP essentials

County: Howard County
Timezone: America/New_York
Population density ? Population density Estimated residents per square mile of land area in this ZIP tabulation area.: 355 / sq mi
Housing density ? Housing density Estimated housing units per square mile of land area in this ZIP tabulation area.: 129 / sq mi
State: Maryland
Metro: Washington-Baltimore-Arlington, DC-MD-VA-WV-PA

Demographics and housing

Households ? Households Estimated number of occupied households in this ZIP tabulation area.: 2.1K
Owner occupied ? Owner occupied Share of occupied housing units that are owner occupied.: 97%
Renter occupied ? Renter occupied Share of occupied housing units that are renter occupied.: 3%

Education, work, and connectivity

Based on Census ACS 2024 5-year estimates. Tap the ? next to a metric for the denominator or calculation.

Bachelor's degree+ ? Bachelor's degree+ Share of residents age 25 and older with a bachelor's, graduate, or professional degree.: 64%
Poverty rate ? Poverty rate Share of people whose income falls below the federal poverty threshold.: 3%
Labor force participation ? Labor force participation Share of residents age 16 and older who are working or actively looking for work.

Age mix

Under 18 ? Under 18 Share of residents younger than 18.: 21%
Age 20 to 34 ? Age 20 to 34 Share of residents in the combined 20 to 24 and 25 to 34 age groups.: 15%
Age 35 to 64 ? Age 35 to 64 Share of residents in the combined 35 to 44, 45 to 54, 55 to 59, and 60 to 64 age groups.: 45%
Age 65+

Housing stock and commute modes

Single-unit homes ? Single-unit homes Share of housing units in detached or attached single-unit structures.: 97%
Multi-unit housing ? Multi-unit housing Share of housing units in buildings with 2 or more units.: 3%
Mobile homes ? Mobile homes Share of housing units that are mobile homes.: 0%

Context

How this ZIP compares nearby

Compared with Maryland

Open

Median income: $103,678
Median home value: $419,900
Bachelor's degree+: 43%
Poverty rate: 9%
Unemployment: 5%
Mean commute: 31.1 min

Compared with Howard County, MD

Open

Median income: $149,763
Median home value: $597,900

Rankings

State standing

View full MD ZIP rankings

Population rank

#225 of 478

Among ZIP codes in Maryland with reported population.

Income rank

#28 of 421

Among ZIP codes in Maryland with reported median income.

Home value rank

#46 of 429

Among ZIP codes in Maryland with reported home values.

Nearby ZIP codes

21163

2.7 mi

21784 • Eldersburg, MD

5 mi

21794

5.2 mi

21133 • Randallstown, MD

5.4 mi

21042

5.5 mi

Related lookup paths

Browse county page

Connect this ZIP profile back to its county directory.

Browse state page

Explore more ZIP profile pages in Maryland.

Postal address lookup

Start with a street address when you need the exact postal ZIP and ZIP+4.

Quick take

Median household income is about 85% above the state median.

Bachelor's degree attainment is higher than the state average by about 21 points.

Poverty is lower than the state average by about 7 points.

Population density is relatively low at about 355 residents per square mile.

Location note

ZIP boundaries, mailing cities, and county lines do not always match perfectly. This page blends postal context, map context, and public demographic data so you can read the area more accurately.

Median age

Median resident age. Half of residents are younger and half are older.

Housing units

Estimated total housing units, whether occupied or vacant.

2.2K

Vacancy rate

Share of housing units that are vacant.

Geography and density

Land area ? Land area Land area from Census TIGER ZCTA geometry.: 17.1 sq mi
Water area ? Water area Water area from Census TIGER ZCTA geometry.: 0.8 sq mi
Population density ? Population density Estimated residents per square mile of land area.: 355 / sq mi
Housing density ? Housing density Estimated housing units per square mile of land area.: 129 / sq mi
Latitude: 39.3504
Longitude: -76.9066

Unemployment

Share of the civilian labor force age 16 and older that is unemployed.

Broadband households

Share of households with a broadband internet subscription.

99%

Mean commute

Average one-way commute time for workers age 16 and older who do not work from home.

31.9 min

Community profile

Disability ? Disability Share of the civilian noninstitutionalized population with a disability.: 5%
Veterans ? Veterans Share of the adult civilian population that served in the U.S. armed forces.: 5%
Foreign born ? Foreign born Share of residents born outside the United States.: 16%

Age 65+

Share of residents age 65 and older.

Race, ethnicity, and language

Race, ethnicity, and language do not share the same denominator, so these rows are not expected to sum to 100%.

White alone ? White alone Share of residents reporting White alone, not in combination with another race.: 76%
Black alone ? Black alone Share of residents reporting Black or African American alone.: 6%
Hispanic or Latino ? Hispanic or Latino Share of residents identifying as Hispanic or Latino. This is an ethnicity and can overlap with race categories.: 1%
Asian alone ? Asian alone Share of residents reporting Asian alone.: 11%
Two or more races ? Two or more races Share of residents reporting more than one race.: 5%
English only ? English only Share of people age 5 and older who speak only English at home.: 83%
Spanish ? Spanish Share of people age 5 and older who speak Spanish at home.: 1%
Other languages ? Other languages Share of people age 5 and older who speak a non-English, non-Spanish language at home.: 4%

Built 2010 or later

Share of housing units built in 2010 or later.

Built 1979 or earlier

Share of housing units built in 1979 or earlier.

25%

Drive alone

Share of workers age 16 and older who usually drive alone to work.

71%

Carpool

Share of workers age 16 and older who usually carpool to work.

Transit

Share of workers age 16 and older who usually use public transportation to work.

Walk

Share of workers age 16 and older who usually walk to work.

Work from home

Share of workers age 16 and older who usually work from home.

21%

Bachelor's degree+

65%

Map

Interactive boundary map for ZIP 21104, with nearby ZIP coverage for local context. Click a nearby outline to open that ZIP page.

Selected ZIPNearby ZIPs39.3504, -76.9066

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