ZIP Code 21104
ZIP Code Tabulation Area in Howard County, Maryland.
- Population
- 5,786
- Median household income
- $199,803
- Median home value
- $659,700
+0.4%’19–’23
+33.3%’19–’23
+21.1%’19–’23
Covering part of Howard County, Maryland, ZIP Code 21104 has about 5,786 residents. The median household income of $199,803 is above the Howard County median ($146,982).
Between 2019 and 2023, ZIP Code 21104's population held roughly steady from 5,762 to 5,786.
The typical home was built around 1994. 2.5% of residents live below the poverty line.
Demographics
ACS 2019–2023- Population
- 5,786
- Median age
- 46.0 yrs
- Median household income
- $199,803
- Median home value
- $659,700
- Median gross rent
- —
- Housing units
- 1,985
- Homeownership rate
- 96.9%
- Bachelor's degree or higher
- 63.3%
- Unemployment rate
- 2.5%
Trends
ACS 5-year · 2019–20235,7625,786
$149,907$199,803
$544,800$659,700
$2,194$2,274
| Year | Population | Median household income | Median home value | Median gross rent |
|---|---|---|---|---|
| 2019 | 5,762 | $149,907 | $544,800 | $2,194 |
| 2020 | 6,029 | $171,012 | $568,300 | $2,274 |
| 2021 | 6,212 | $180,789 | $581,900 | — |
| 2022 | 6,077 | $195,000 | $659,400 | — |
| 2023 | 5,786 | $199,803 | $659,700 | — |
Each year is a US Census Bureau ACS 5-year estimate ending that year.
Age distribution
Under 55.2%
5 to 1715.3%
18 to 249.5%
25 to 348.2%
35 to 4411.1%
45 to 5412.3%
55 to 6418.9%
65 to 7412.7%
75 and over6.7%
| Count | Share | |
|---|---|---|
| Under 5 | 303 | 5.2% |
| 5 to 17 | 885 | 15.3% |
| 18 to 24 | 550 | 9.5% |
| 25 to 34 | 476 | 8.2% |
| 35 to 44 | 645 | 11.1% |
| 45 to 54 | 711 | 12.3% |
| 55 to 64 | 1,094 | 18.9% |
| 65 to 74 | 734 | 12.7% |
| 75 and over | 388 | 6.7% |
Race & ethnicity
| Count | Share | |
|---|---|---|
| White (non-Hispanic) | 4,332 | 74.9% |
| Black or African American | 244 | 4.2% |
| American Indian & Alaska Native | 6 | 0.1% |
| Asian | 597 | 10.3% |
| Native Hawaiian & Pacific Islander | 0 | 0.0% |
| Some other race | 154 | 2.7% |
| Two or more races | 351 | 6.1% |
| Hispanic or Latino (any race) | 102 | 1.8% |
Educational attainment (age 25+)
No high school diploma1.7%
High school graduate17.5%
Some college or associate's17.5%
Bachelor's degree38.3%
Graduate or professional degree25.0%
| Count | Share | |
|---|---|---|
| No high school diploma | 67 | 1.7% |
| High school graduate | 709 | 17.5% |
| Some college or associate's | 709 | 17.5% |
| Bachelor's degree | 1,550 | 38.3% |
| Graduate or professional degree | 1,013 | 25.0% |
Commute to work
- Mean travel time to work
- 30 min
Drove alone75.6%
Carpooled3.8%
Public transit0.2%
Walked0.3%
Bicycle0.0%
Worked from home19.6%
Other means0.4%
How workers get to work
| Count | Share | |
|---|---|---|
| Drove alone | 2,362 | 75.6% |
| Carpooled | 120 | 3.8% |
| Public transit | 6 | 0.2% |
| Walked | 9 | 0.3% |
| Bicycle | 0 | 0.0% |
| Worked from home | 613 | 19.6% |
| Other means | 13 | 0.4% |
Travel time
| Count | Share | |
|---|---|---|
| Under 15 min | 460 | 18.3% |
| 15 to 29 min | 727 | 29.0% |
| 30 to 44 min | 769 | 30.6% |
| 45 to 59 min | 356 | 14.2% |
| 60+ min | 198 | 7.9% |
Households
- Average household size
- 2.98
- Poverty rate
- 2.5% (144 of 5,772)
| Count | Share | |
|---|---|---|
| Family households | 1,556 | 80.6% |
| Nonfamily households | 375 | 19.4% |
Housing
- Median year structure built
- 1994
Occupancy
| Count | Share | |
|---|---|---|
| Occupied | 1,931 | 97.3% |
| Vacant | 54 | 2.7% |
Tenure (of occupied units)
| Count | Share | |
|---|---|---|
| Owner-occupied | 1,872 | 96.9% |
| Renter-occupied | 59 | 3.1% |
1-unit, detached87.8%
1-unit, attached9.5%
2 to 4 units0.0%
5 to 19 units2.7%
20 or more units0.0%
Mobile home & other0.0%
Units in structure
| Count | Share | |
|---|---|---|
| 1-unit, detached | 1,743 | 87.8% |
| 1-unit, attached | 189 | 9.5% |
| 2 to 4 units | 0 | 0.0% |
| 5 to 19 units | 53 | 2.7% |
| 20 or more units | 0 | 0.0% |
| Mobile home & other | 0 | 0.0% |
Geography
- ZCTA
- 21104
- Land area
- 17 sq mi
- Water area
- 0.81 sq mi
- Center point
- 39.3469, -76.9128
Counties this ZIP covers
3Compare with nearby ZIP codes
6National ZIP rankings
21- Largest by population
- Most densely populated
- Highest median household income
- Highest median home value
- Most affordable home values
- Highest median gross rent
- Cheapest median gross rent
- Oldest by median age
- Youngest by median age
- Most college-educated
- Highest poverty rate
- Lowest poverty rate
- Highest homeownership rate
- Lowest homeownership rate
- Longest commutes
- Shortest commutes
- Largest households
- Newest housing
- Oldest housing
- Fastest-growing (2019–2023)
- Fastest-shrinking (2019–2023)