US ZIP Code Map

ZIP code

21042

Ellicott City, MD

STANDARD

21042 covers Ellicott City in Howard County, with 43,021 people in the ACS estimate.

Map of 21042, Ellicott City

ZIP code map

ACS population

43,021

Median household income

$190,504

Median home value

$674,700

About ZIP code 21042

Type

STANDARD

City

Ellicott City

County

Howard County

Timezone

America/New_York

Area codes

410, 443, 667

Land area

37.0 sq mi

Water area

0.17 sq mi

Households

15,269

Median gross rent

$2,253

More enterprise fields

Timezone
America/New_York
Area Codes
410, 443, 667
World Region
NA
Country
US
Housing Count
15,054
Irs Estimated Households
20,610
Population Count
43,147
Irs Estimated Population
43,950

People in 21042

Race

  • White24,716
  • Black or African American2,968
  • American Indian or Alaska Native57
  • Asian11,995
  • Native Hawaiian and Pacific Islander7
  • Other race484
  • Two or more races2,920

Hispanic or Latino (any race): 1,625

Age

  • Under 104,896
  • 10 to 197,034
  • 20 to 293,309
  • 30 to 394,128
  • 40 to 496,427
  • 50 to 596,404
  • 60 to 695,633
  • 70 to 793,582
  • 80 and older1,734

Income and housing in 21042

Poverty rate

2.7%

Median earnings

$94,089

Median household income

$190,504

Median home value

$674,700

Median gross rent

$2,253

Education

  • High school graduate97.5%
  • Bachelor's degree74.7%
  • Graduate degree41.3%

Places covering 21042

Cities and places

Counties

17.5% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 21042

IRS populationACS population
47,46623,733020052023

Hover a year for IRS and ACS values.

ZIP codes near 21042

  1. 21041Ellicott City0.0 miPop 452 · Income —
  2. 21043Ellicott City1.7 miPop 47,134 · Income $141,846
  3. 21163Woodstock4.1 miPop 7,031 · Income $131,154
  4. 21228Catonsville4.9 miPop 49,417 · Income $107,714
  5. 21244Windsor Mill4.9 miPop 39,545 · Income $84,849
  6. 21044Columbia4.9 miPop 44,775 · Income $132,924
  7. 21045Columbia5.0 miPop 40,866 · Income $117,323
  8. 21104Marriottsville6.4 miPop 5,786 · Income $199,803
  9. 21250Baltimore6.5 miPop 3,001 · Income —
  10. 21075Elkridge6.5 miPop 37,146 · Income $133,321
  11. 21794West Friendship6.7 miPop 2,326 · Income $223,833
  12. 21150Simpsonville6.8 miPop 116 · Income —

ZIP code 21042 FAQ

What city is ZIP code 21042 in?
21042 is in Ellicott City, MD.
What county is 21042 in?
21042 is in Howard County.
What is the median household income in 21042?
The median household income in 21042 is $190,504.
Which ZIP codes are near 21042?
Use the radius tool on this page to list ZIP codes within a chosen distance of 21042.