ZIP Code 21784
ZIP Code Tabulation Area in Carroll County, Maryland.
- Population
- 37,813
- Median household income
- $141,228
- Median home value
- $478,200
+1.2%’19–’23
+20.4%’19–’23
+23.6%’19–’23
ZIP Code 21784 (Carroll County, Maryland) is home to about 37,813 residents. At $141,228, its median household income sits above Carroll County's $115,876.
Between 2019 and 2023, ZIP Code 21784's population grew 1.2% from 37,365 to 37,813, while its median gross rent rose 36.2% from $1,228 to $1,673.
Owners occupy 87.0% of the area's occupied homes. The median resident is 39.5 years old.
Demographics
ACS 2019–2023- Population
- 37,813
- Median age
- 39.5 yrs
- Median household income
- $141,228
- Median home value
- $478,200
- Median gross rent
- $1,673
- Housing units
- 13,664
- Homeownership rate
- 87.0%
- Bachelor's degree or higher
- 53.2%
- Unemployment rate
- 3.5%
Trends
ACS 5-year · 2019–202337,36537,813
$117,310$141,228
$386,900$478,200
$1,228$1,673
| Year | Population | Median household income | Median home value | Median gross rent |
|---|---|---|---|---|
| 2019 | 37,365 | $117,310 | $386,900 | $1,228 |
| 2020 | 36,484 | $120,344 | $389,300 | $1,356 |
| 2021 | 36,809 | $125,497 | $404,300 | $1,494 |
| 2022 | 37,219 | $138,923 | $459,700 | $1,647 |
| 2023 | 37,813 | $141,228 | $478,200 | $1,673 |
Each year is a US Census Bureau ACS 5-year estimate ending that year.
Age distribution
Under 56.0%
5 to 1718.1%
18 to 247.4%
25 to 3411.4%
35 to 4415.0%
45 to 5414.6%
55 to 6412.0%
65 to 748.5%
75 and over6.8%
| Count | Share | |
|---|---|---|
| Under 5 | 2,287 | 6.0% |
| 5 to 17 | 6,853 | 18.1% |
| 18 to 24 | 2,806 | 7.4% |
| 25 to 34 | 4,310 | 11.4% |
| 35 to 44 | 5,684 | 15.0% |
| 45 to 54 | 5,527 | 14.6% |
| 55 to 64 | 4,552 | 12.0% |
| 65 to 74 | 3,215 | 8.5% |
| 75 and over | 2,579 | 6.8% |
Race & ethnicity
| Count | Share | |
|---|---|---|
| White (non-Hispanic) | 30,170 | 79.8% |
| Black or African American | 2,162 | 5.7% |
| American Indian & Alaska Native | 14 | 0.0% |
| Asian | 1,569 | 4.1% |
| Native Hawaiian & Pacific Islander | 0 | 0.0% |
| Some other race | 314 | 0.8% |
| Two or more races | 1,406 | 3.7% |
| Hispanic or Latino (any race) | 2,178 | 5.8% |
Educational attainment (age 25+)
No high school diploma4.3%
High school graduate18.2%
Some college or associate's24.2%
Bachelor's degree30.9%
Graduate or professional degree22.3%
| Count | Share | |
|---|---|---|
| No high school diploma | 1,123 | 4.3% |
| High school graduate | 4,717 | 18.2% |
| Some college or associate's | 6,257 | 24.2% |
| Bachelor's degree | 8,001 | 30.9% |
| Graduate or professional degree | 5,769 | 22.3% |
Commute to work
- Mean travel time to work
- 35 min
Drove alone73.9%
Carpooled4.0%
Public transit0.5%
Walked0.7%
Bicycle0.0%
Worked from home20.2%
Other means0.7%
How workers get to work
| Count | Share | |
|---|---|---|
| Drove alone | 14,450 | 73.9% |
| Carpooled | 779 | 4.0% |
| Public transit | 105 | 0.5% |
| Walked | 133 | 0.7% |
| Bicycle | 0 | 0.0% |
| Worked from home | 3,947 | 20.2% |
| Other means | 139 | 0.7% |
Travel time
| Count | Share | |
|---|---|---|
| Under 15 min | 2,636 | 16.9% |
| 15 to 29 min | 3,143 | 20.1% |
| 30 to 44 min | 4,599 | 29.5% |
| 45 to 59 min | 3,179 | 20.4% |
| 60+ min | 2,049 | 13.1% |
Households
- Average household size
- 2.78
- Poverty rate
- 4.1% (1,506 of 36,799)
| Count | Share | |
|---|---|---|
| Family households | 10,226 | 77.4% |
| Nonfamily households | 2,990 | 22.6% |
Housing
- Median year structure built
- 1986
Occupancy
| Count | Share | |
|---|---|---|
| Occupied | 13,216 | 96.7% |
| Vacant | 448 | 3.3% |
Tenure (of occupied units)
| Count | Share | |
|---|---|---|
| Owner-occupied | 11,503 | 87.0% |
| Renter-occupied | 1,713 | 13.0% |
1-unit, detached78.7%
1-unit, attached11.7%
2 to 4 units2.0%
5 to 19 units4.9%
20 or more units2.6%
Mobile home & other0.2%
Units in structure
| Count | Share | |
|---|---|---|
| 1-unit, detached | 10,756 | 78.7% |
| 1-unit, attached | 1,595 | 11.7% |
| 2 to 4 units | 268 | 2.0% |
| 5 to 19 units | 671 | 4.9% |
| 20 or more units | 353 | 2.6% |
| Mobile home & other | 21 | 0.2% |
Geography
- ZCTA
- 21784
- Land area
- 56 sq mi
- Water area
- 2.03 sq mi
- Center point
- 39.4011, -76.9737
Counties this ZIP covers
2Compare 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)