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Monrovia, MD

Census-designated place in Frederick County, Maryland. ZIP codes: 21770.

Population

3,568

Land area

2.2sq mi

People per sq mi

1,589

ZIP codes

1

Monrovia and its ZIP codes

Full map

Monrovia at a glance

  • Monrovia is about 2.5 times as dense as Maryland as a whole.
  • Households here earn a median of $207,153 a year, 100% more than the Maryland figure of $103,678.
  • A typical owner-occupied home is valued at $805,100 (92% above Maryland).

Local data for Monrovia, MD

Counts from official public data

Housing and community stats

Monrovia, MD, American Community Survey 2020-2024

Full profile

Median household income

$207,153

Poverty rate

0.0%

Median home value

$805,100

Homeownership

98.3%

Bachelor's or higher

72.3%

Median age

38.1

Average commute

37.3 min

Largest reported origins and ancestries: Indian Americans (596), German Americans (513), Irish Americans (481).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Frederick County. PPP loans are for Monrovia.

Details

Unemployment rate

3.3%

Aug 2026, -0.6 pts in a year

Average annual pay

$70,784

106,962 jobs, 2025

Income per person

$78,929

BEA, 2024

Federal spending

$3.12B

FY 2026, $11,490 per person

PPP loans

$11.36M

162 loans, 1,356 jobs reported

Frederick County economyFederal spendingPPP loans

How people get to work

Monrovia, MD, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone64.7%
  • Carpooled5.1%
  • Public transit0.0%
  • Walked0.0%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.0%
  • Worked from home30.2%

Average one-way commute: 37.3 minutes for people who do not work from home.

Environment and hazard risk

Monrovia, MD, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: winter weather

Storm events since 1996

1,546

Countywide, mostly thunderstorm wind

Flood insurance policies

501

0.6% of homes, county

July high / Jan low

84° / 25°F

47.9 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Monrovia, MD, CDC PLACES estimates

All 40 measures

Obesity

33.2%

U.S. 33.3% about the same

Diabetes

8.5%

U.S. 12.1% -3.6 pts

Smoking

8.4%

U.S. 12.8% -4.4 pts

Uninsured (18-64)

6.5%

U.S. 11.1% -4.6 pts

ZIP codes in Monrovia

1 in or overlapping Monrovia. Population shown

·

Cities near Monrovia

NameDistanceLand area (sq mi)
New MarketTown2.3 mi1.8
Green ValleyCensus-designated place2.4 mi17.1
LinganoreCensus-designated place3.7 mi8.3
BartonsvilleCensus-designated place4.3 mi2.1
UrbanaCensus-designated place4.3 mi7.8
Spring RidgeCensus-designated place4.9 mi2.7
Mount AiryTown6.6 mi4.1
DamascusCensus-designated place7.3 mi14.2
Ballenger CreekCensus-designated place7.9 mi10.8
BuckeystownCensus-designated place8.2 mi0.9
LibertytownCensus-designated place9 mi2.4
Ten Mile CreekCensus-designated place9.4 mi5.8
WalkersvilleTown9.5 mi4.8
ClarksburgCensus-designated place9.5 mi9.6
FrederickCity10 mi24
AdamstownCensus-designated place11 mi1.1

Frequently asked questions

What county is Monrovia, MD in?
Monrovia is in Frederick County, Maryland.
What ZIP codes are in Monrovia, MD?
ZIP codes in or overlapping Monrovia include 21770.
What is the population of Monrovia, MD?
About 3,568 people live in Monrovia, based on American Community Survey 5-year estimates.
What cities are near Monrovia?
Nearby places include New Market (2.3 mi), Green Valley (2.4 mi), Linganore (3.7 mi), Bartonsville (4.3 mi), Urbana (4.3 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023