US ZIP Code Map

ZIP code

21770

Monrovia, MD

STANDARD

21770 covers Monrovia in Frederick County, with 7,815 people in the ACS estimate.

Map of 21770, Monrovia

ZIP code map

ACS population

7,815

Median household income

$184,464

Median home value

$599,700

About ZIP code 21770

Type

STANDARD

City

Monrovia

County

Frederick County

Timezone

America/New_York

Area codes

227, 240, 301

Land area

11.4 sq mi

Water area

0.01 sq mi

Households

2,448

More enterprise fields

Timezone
America/New_York
Area Codes
227, 240, 301
World Region
NA
Country
US
Housing Count
2,576
Irs Estimated Households
4,120
Population Count
7,575
Irs Estimated Population
9,000

People in 21770

Race

  • White5,700
  • Black or African American446
  • American Indian or Alaska Native23
  • Asian529
  • Other race243
  • Two or more races634

Hispanic or Latino (any race): 661

Age

  • Under 101,068
  • 10 to 191,001
  • 20 to 29728
  • 30 to 391,052
  • 40 to 49908
  • 50 to 591,117
  • 60 to 69992
  • 70 to 79536
  • 80 and older173

Income and housing in 21770

Poverty rate

1.4%

Median earnings

$78,408

Median household income

$184,464

Median home value

$599,700

Education

  • High school graduate98.5%
  • Bachelor's degree54.5%
  • Graduate degree24.1%

Places covering 21770

Cities and places

Counties

1.6% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 21770

IRS populationACS population
9,7204,860020052023

Hover a year for IRS and ACS values.

ZIP codes near 21770

  1. 21754Ijamsville3.5 miPop 7,439 · Income $179,797
  2. 21774New Market4.3 miPop 16,515 · Income $171,875
  3. 20872Damascus4.4 miPop 13,138 · Income $132,804
  4. 21771Mount Airy5.5 miPop 32,827 · Income $154,844
  5. 21704Frederick6.9 miPop 19,623 · Income $164,457
  6. 20871Clarksburg8.4 miPop 28,329 · Income $177,120
  7. 21762Libertytown9.0 miPop 176 · Income —
  8. 20882Gaithersburg9.3 miPop 13,661 · Income $186,964
  9. 21705Frederick9.5 miPop 4 · Income —
  10. 21717Buckeystown9.6 miPop 296 · Income $153,030
  11. 20876Germantown9.7 miPop 26,511 · Income $113,329
  12. 21765Lisbon9.7 miPop 193 · Income —

ZIP code 21770 FAQ

What city is ZIP code 21770 in?
21770 is in Monrovia, MD.
What county is 21770 in?
21770 is in Frederick County.
What is the median household income in 21770?
The median household income in 21770 is $184,464.
Which ZIP codes are near 21770?
Use the radius tool on this page to list ZIP codes within a chosen distance of 21770.