ZIP Code Tabulation Area

21770

Monrovia, MD · ACS 2020–2024

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Latest estimates

At a glance

U.S. Census Bureau American Community Survey 5-year estimates.

Total population
8,751
Median household income
$183,571
People below poverty
1.5%
Median home value
$632,500

Income

The median income of households in 21770 was $183,571. An estimated 1.3% of households had income below $10,000 a year and 44.2% had income of $200,000 or more.

Household Income in 21770 in 2020-2024

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Percent
Less than $10,000 1.3
$10,000 to $14,999 0
$15,000 to $24,999 0.3
$25,000 to $34,999 1
$35,000 to $49,999 1.4
$50,000 to $74,999 10.1
$75,000 to $99,999 7.9
$100,000 to $149,999 14.3
$150,000 to $199,999 19.5
$200,000 or more 44.2

Median Earnings for Full-Time Year-Round Workers by Sex in 21770 in 2020-2024

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Dollars
Male 92263
Female 83849

An estimated 90.5% of households received earnings. An estimated 30.4% of households received Social Security and an estimated 38.7 % of households received retirement income other than Social Security. The average income from Social Security was $36,327. These income sources are not mutually exclusive; that is, some households received income from more than one source.

Proportion of Households with Various Income Sources in 21770 in 2020-2024

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Percent
Earnings 90.5
Social Security 30.4
Retirement income 38.7
Supplemental Security Income (SSI) 1.9
Cash public assistance income 2.4

Poverty and Participation in Government Programs

In 2020-2024, 1.5 % of people were in poverty. An estimated 0% of children under 18 were below the poverty level, compared with 2.9% of people 65 years old and over. An estimated 1.7% of people 18 to 64 years were below the poverty level.

Poverty Rates in 21770 in 2020-2024

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Percent
People in poverty 1.5
Children under 18 years below poverty 0
People 65 years old and over below poverty 2.9
People 18 to 64 years below poverty 1.7

In 2020-2024, 3 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 77.2% of households that received SNAP had children under 18, and 98.7% of households that received SNAP had one or more people 60 years and over. An estimated 26.6% of all households receiving SNAP were families with a female householder and no spouse present.


Among the civilian noninstitutionalized population in 21770 in 2020-2024, 98.4% had health insurance coverage and 1.6% did not have health insurance coverage. Private coverage was 90.6% and public coverage was 20.4%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 1.2%.


In 2020-2024, 21770 had a total population of 8,751 - 4,464 (51%) females and 4,287 (49%) males. The median age was 39.8 years. An estimated 22.5% of the population was under 18 years, 34.1% was 19 to 44 years, 23.6% was 45 to 64 years, and 17.7 % was 65 years and older.

Population by Age and Sex for 21770 in 2020-2024

Male Female
Under 5 187 169
5 to 9 237 362
10 to 14 356 354
15 to 19 251 237
20 to 24 254 247
25 to 29 94 207
30 to 34 364 187
35 to 39 357 574
40 to 44 434 272
45 to 49 436 266
50 to 54 37 274
55 to 59 282 251
60 to 64 273 240
65 to 69 340 513
70 to 74 273 124
75 to 79 55 79
80 to 84 15 14
85 and over 42 94

Hispanic Origin and Race

For people reporting one race alone, 72.4% were White; 7.9% were Black or African American; 11.8% were American Indian and Alaska Native; 12.3% were Asian; 4.3% were Native Hawaiian and Other Pacific Islander, and 0% were Some Other Race. An estimated 6.6% reported Two or More Races. An estimated 3.1% of the people in 21770 were Hispanic or Latino. An estimated 72.3% of the people in 21770 were White alone, non-Hispanic. People of Hispanic origin may be of any race.


Households and Families

In 2020-2024, there were 2,622 households in 21770. The average household size was 3.34 people.

Married-couple households made up 78.2% of the households in 21770 while cohabiting couple households made up 2.2% of households. Female householders with no spouse or partner present were 13.2% of all households, while 6.4% of households had male householders with no spouse or partner present. Some households had one person, as 4.6% of households were male householders living alone, and 4.4% were female householders living alone, for a total of 9% of all households.

In 21770, 47.7% of all households had one or more people under the age of 18; 37.5% of all households had one or more people 65 years and over.

Types of Households in 21770 in 2020-2024

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Percent
Married-couple households 78.2
Cohabiting Couples 2.2
Male Householder
No spouse/partner present
6.4
Female Householder
No spouse/partner present
13.2

Marital Status

Among persons 15 and older, 70.5% of males and 70.4% of females were currently married.

Population 15 years and over Percent
Males
Percent
Females
Never married 22.3 19.2
Now married, except separated 70.5 70.4
Separated 0 0.7
Widowed 0.5 4.2
Divorced 6.8 5.6

Grandparents and Grandchildren

In 21770, 566 grandparents lived with their grandchildren under 18 years old. Of those grandparents, 9% were responsible for the basic needs of their grandchildren.


Nativity and Foreign-Born

In 2020-2024, an estimated 86.9% of the people living in 21770 were U.S. natives. 43.8% of the 21770 population were living in the state where they were born.

Approximately 13.1% of 21770 residents in 2020-2024 were foreign-born. 68.4% of foreign-born were naturalized U.S. citizens and an estimated 70.4 % entered the country before the year 2010.

Foreign-born residents of 21770 come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2020-2024 for 21770.

Region of Birth for the Foreign-Born Population in 21770 in 2020-2024

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Percent
Latin America 12.2
Asia 52.2
Europe 13
Africa 22.6
Northern America 0
Oceania 0

Language

Among people at least five years old living in 21770 in 2020-2024, 12.6 % spoke a language other than English at home. Spanish was spoken by 2.1% of people at least five years old; 2.5% reported that they did not speak English "very well."

Percentage of the Population 5 years and over who Speak a Language other than English in 21770 in 2020-2024

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Percent
Spanish 2.1
Other Indo-European languages 2.2
Asian and Pacific Islander languages 7.4
Other languages 0.9

Geographic Mobility

In 2020-2024, 93.6 % of the people at least one year old living in 21770 were living in the same house one year earlier.

Geographic Mobility of Residents of 21770 in 2020-2024

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Percent
Same house 93.6
Different house, same county 0.9
Different county, same state 4.3
Different state 1.2
Abroad 0

Education

In 2020-2024, 98 % of people 25 years and over had at least graduated from high school and 54.8% had a bachelor's degree or higher. An estimated 2% did not complete high school.

The total school enrollment in 21770 was 2,607 in 2020-2024. Nursery school enrollment was 291 and kindergarten through 12th grade enrollment was 1,504. College or graduate school enrollment was 812.

Educational Attainment of People in 21770 in 2020-2024

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Percent
Less than high school diploma 2
High school diploma or equivalency 15.6
Some college, no degree 19.4
Associate's degree 8.1
Bachelor's degree 32.2
Graduate or professional degree 22.6

Disability

In 21770, among the civilian noninstitutionalized population in 2020-2024, 10.7 % reported a disability. The likelihood of having a disability varied by age - from 7.1% of people under 18 years old, to 3.1% of people 18 to 64 years old, and to 40.5% of those 65 and over.


Employment Status and Type of Employer

In 21770, 65.8 % of the population 16 and over were employed; 31.7% were not currently in the labor force.

An estimated 67.2% of the people employed were private wage and salary workers; 28.5% were federal, state, or local government workers; and 4.3 % were self-employed in their own (not incorporated) business.

Class of worker Number Percent
Private wage and salary workers 3,120 67.2
Federal, state, or local government workers 1,324 28.5
Self-employed workers in own not incorporated business 199 4.3

Industries

In 2020-2024, the civilian employed population 16 years and older in 21770 worked in the following industries:

Percent by Industry in 21770 in 2020-2024

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Percent
Agriculture, forestry, fishing and hunting, and mining 2.3
Construction 7.3
Manufacturing 3.3
Wholesale trade 1.1
Retail trade 8.1
Transportation and warehousing, and utilities 1.6
Information 4.4
Finance and insurance, and real estate and rental and leasing 6.1
Professional, scientific, and management, and administrative and waste management services 18.1
Educational services, and health care and social assistance 20
Arts, entertainment, and recreation, and accommodation, and food services 8.2
Other Services, except public administration 5.8
Public administration 13.8

Occupations

Occupations for the Civilian Employed Population 16 Years and over in 21770 in 2020-2024

Civilian employed population 16 years and over Number Percent
Management, business, sciences, and arts occupations 2,481 53.4
Service occupations 346 7.5
Sales and office occupations 927 20
Natural resources, construction, and maintenance occupations 562 12.1
Production, transportation, and material moving occupations 327 7

Commuting to Work

An estimated 66.9% of 21770 workers drove to work alone in 2020-2024, and 6.8% carpooled. Among those who commuted to work, it took them on average 35.2 minutes to get to work.

Percent of Workers 16 and over Commuting by Mode in 21770 in 2020-2024

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Percent
Car, truck, van -- drove alone 66.9
Car, truck, van -- carpooled 6.8
Public transportation (excluding taxicab) 0
Walked 0
Other means 0
Worked from home 26.3

In 2020-2024, 21770 had a total of 2,632 housing units. Of these housing units, 100% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 0% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 0% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

Types of Housing Units in 21770 in 2020-2024

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Percent
Single-family houses 100
Apartments in multi-unit structures 0
Mobile homes 0
Boat, RV, van, etc 0

33.3% of the housing inventory was comprised of houses built since 2010, while 2.5% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in 21770 was 9.0+ rooms, and of these housing units 96.2% had three or more bedrooms.


In 2020-2024, 21770 had 2,622 housing units that were occupied or had people living in them, while the remaining 10 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 98.8% while renters occupied 1.2%. The average household size of owner-occupied houses was 3.34 and in renter-occupied houses it was 2.72.

0% of householders of these occupied houses had moved into their house since 2021, while 14.4% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 1.6% and another 48.5% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in 21770:

House Heating Fuel Used in 21770 in 2020-2024

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Percent
Gas 36.1
Electricity 59
Fuel oil, kerosene, etc 3.2
All other fuels 1.5
No fuel used 0

In 2020-2024, the median property value for owner-occupied houses in 21770 was $632,500.

Of the owner-occupied households, 83.8 % had a mortgage. 16.2% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $2,889 and for owners without a mortgage it was $939.

For renter-occupied houses, the median gross rent for 21770 was $NaN. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.

Note: The presence of NaN means that the estimate could not be calculated or cannot be published for this topic or geography.