Checked
ZIP Code 21042
Ellicott City, MD, Howard County
Population
43,327
Land area
37sq mi
People per sq mi
1,171
City
Ellicott City
ZIP 21042 and nearby ZIP codes
ZIP 21042 at a glance
- ZIP 21042 (Ellicott City) is 83% denser than Maryland as a whole.
- Households here earn a median of $190,061 a year, 83% more than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $706,400 (68% above Maryland) and median rent is $2,183 a month.
Local data for ZIP 21042
Counts from official public data
Housing and community stats
ZIP 21042, American Community Survey 2020-2024
Median household income
$190,061
Poverty rate
3.3%
Median home value
$706,400
Prices +2.9% in a year
Median rent
$2,183/mo
Homeownership
84.7%
Bachelor's or higher
72.9%
Median age
45.1
Average commute
28.6 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
1,194
ZIP Business Patterns 2023
Employees
9,947
$512M annual payroll
PPP loans
$92.14M
1,451 loans
Campaign donations
$574K
47% D, 15% R, 2026 cycle
Environment and hazard risk
ZIP 21042, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
911
Countywide, mostly thunderstorm wind
Flood insurance policies
816
0.8% of homes, county
July high / Jan low
89° / 26°F
47.5 inches of rain a year
Health statistics
Share of adults in ZIP 21042, CDC PLACES estimates
Obesity
26.5%
U.S. 33.3% -6.8 pts
Diabetes
10.1%
U.S. 12.1% -2.0 pts
Smoking
6.1%
U.S. 12.8% -6.7 pts
Uninsured (18-64)
4.0%
U.S. 11.1% -7.1 pts
Cities in ZIP 21042
ZIP codes near 21042
| Name | Distance | Land area (sq mi) |
|---|---|---|
| 21794Sykesville | 4.2 mi | 8.2 |
| 21044Columbia | 4.9 mi | 11.9 |
| 21104Sykesville | 5 mi | 17.1 |
| 21163Randallstown | 5.2 mi | 13.6 |
| 21043Ellicott City | 5.6 mi | 17.1 |
| 21045Columbia | 6 mi | 9.7 |
| 21029Highland | 6 mi | 16.9 |
| 21036Highland | 6.1 mi | 6.3 |
| 21737Brookeville | 6.7 mi | 5.1 |
| 21723Lisbon | 6.8 mi | 3.6 |
| 21738Lisbon | 6.8 mi | 7 |
| 21244Milford Mill | 7.3 mi | 14.1 |
Frequently asked questions
- What city is ZIP code 21042?
- ZIP code 21042 is in Ellicott City, MD (Howard County).
- What county is ZIP code 21042 in?
- ZIP code 21042 is mostly in Howard County, Maryland.
- How many people live in ZIP code 21042?
- About 43,327 people live in the 21042 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.