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21015
Key Indicators
A quick look at key numbers
Population
30,013
Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates
Median Age
40.4
years ∙ half population younger than 40.4, half older
Diversity Index
31.7%
chance two random people differ in race and ethnicity
Nativity
5.9%
foreign-born population
Geographic Context
Location, size, and surroundings
About
21015 is a ZIP Code Tabulation Area (ZCTA) defined by the U.S. Census Bureau, corresponding primarily to Bel Air South, Bel Air North and other communities in Harford County, Maryland.
Co-ordinates
DEC39.544176° N, 76.292469° W
DMS39° 32′ 39.03″ N, 76° 17′ 32.89″ W
Population Density & area
962/sq mi
(371/km²)
Demographics & Living
Who lives here, how households are formed, and community composition
Population Composition
Key characteristics of the population
Sex Distribution
48.5%
male
Male
48.5%
Female
51.5%
males per 100 females
21015
94.3
Maryland
94.8
United States
98
Nativity
5.9%
foreign-born population
% Foreign-born
21015
5.9%
Maryland
16.6%
United States
14.1%
Age Distribution
How the population is spread across age groups
Median Age
40.4
years ∙ half population younger than 40.4, half older
Dependency ratio
70.8
dependents per 100 working-age adults
21015
70.8
Maryland
63.5
United States
64.4
AGE DISTRIBUTION
Distribution of age group
Median age
| 21015 | Maryland | United States | |
|---|---|---|---|
| Age Group | |||
| Children (Under 18) | 25.4% | 22.2% | 22% |
| Working age (18-64) | 58.6% | 61.1% | 60.8% |
| Senior (65+) | 16% | 16.7% | 17.2% |
| Dependency ratio | |||
| Total dependency ratio | 70.8 | 63.5 | 64.4 |
| Child dependency ratio | 43.4 | 36.3 | 36.1 |
| Old-age dependency ratio | 27.3 | 27.2 | 28.3 |
Racial & Ethnic Composition
Racial and ethnic makeup and how it compares
Race & Ethnicity
Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.
Diversity Index
31.7%
chance two random people differ in race and ethnicity
21015
31.7%
Maryland
67.7%
United States
61.4%
Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.
RACIAL & ETHNIC COMPOSITION
Race & Ethnicity
Percentage of 21015 population
| 21015 | Maryland | United States | |
|---|---|---|---|
| Hispanic or Latino | 5.1% | 12.5% | 19.3% |
| Mexican | 1.2% | 2% | 11.3% |
| Puerto Rican | 0.9% | 1.1% | 1.8% |
| Cuban | 0.1% | 0.3% | 0.8% |
| Other Hispanic / Latino | 2.9% | 9.1% | 5.5% |
| Not Hispanic or Latino | 94.9% | 87.5% | 80.7% |
| One race | 92% | 82.9% | 76.4% |
| White | 82.2% | 46.6% | 57.4% |
| Black or African American | 4.4% | 28.9% | 11.9% |
| American Indian and Alaska Native | 0% | 0.1% | 0.5% |
| Asian | 4.5% | 6.5% | 5.9% |
| Native Hawaiian and Other Pacific Islander | 0% | 0% | 0.2% |
| Some Other Race | 0.8% | 0.7% | 0.6% |
| Two or more races (Multiracial) | 2.9% | 4.6% | 4.3% |
Household & Families Composition
Household size, type, and family structure
Household structure
78.1%
family
Family
78.1%
Non family
21.9%
% family households
21015
78.1%
Maryland
65%
United States
64.2%
Average household size
2.72
persons per household
Household & Family COMPOSITION
Households
Percentage of 21015 population
| 21015 | Maryland | United States | |
|---|---|---|---|
| Total households | 11,012 | 2,362,928 | 129,227,496 |
| Average houshold size | 2.72 | 2.57 | 2.53 |
| Family households | 8,601 | 1,535,706 | 82,990,528 |
| Average family size | 3.09 | 3.19 | 3.14 |
| Married couple family | 7,149 | 1,090,871 | 60,637,388 |
| Other families | 1,452 | 444,835 | 22,353,140 |
| Male householder | 577 | 120,206 | 6,572,819 |
| Female householder | 875 | 324,629 | 15,780,321 |
| Non-family households | 2,411 | 827,222 | 46,236,968 |
| One-person households | 2,084 | 677,124 | 37,140,836 |
| Male householder | 710 | 282,192 | 16,871,444 |
| Senior (65+) living alone | 238 | 87,532 | 5,225,110 |
| Female householder | 1,374 | 394,932 | 20,269,392 |
| Senior (65+) living alone | 993 | 185,255 | 10,089,070 |
| Other living arrangements | 327 | 150,098 | 9,096,132 |
Housing Profile
Housing stock, ownership, rentals, and cost burdens
Total housing units
11,408
housing units
21015
11,408
Maryland
2,560,784
United States
143,775,355
Occupancy status
96.5%
occupied
Occupied
96.5%
Vacant
3.5%
vacancy rate
21015
3.5%
Maryland
7.7%
United States
10.1%
Housing Characteristics
How the housing supply is structured and used
Types of Housing unit
86%
Single family houses
Median Year Built
1991
Half of houses were built before 1991, and half after.
Note: Median year built reflects occupied units only; distribution includes all units.
Housing Characteristics
Units, rooms & bedrooms
Physical characteristics of housing units
| 21015 | Maryland | United States | |
|---|---|---|---|
| Rooms per unit | |||
| Median rooms | 7.9 | 6.2 | 5.5 |
| 1–3 rooms | 2.9% | 12.3% | 15.1% |
| 4–6 rooms | 28.8% | 42.4% | 51.6% |
| 7+ rooms | 68.4% | 45.2% | 33.4% |
| Bedrooms | |||
| No bedroom / studio | 0.4% | 2.1% | 2.9% |
| 1 bedroom | 2.6% | 10.3% | 10.9% |
| 2 bedrooms | 13.6% | 21.3% | 25% |
| 3 bedrooms | 38.6% | 35.8% | 38.7% |
| 4+ bedrooms | 44.7% | 30.5% | 22.4% |
| At a glance | |||
| Median year built | 1991 | 1980 | 1981 |
| Total housing units | 11,408 | 2,560,784 | 143,775,355 |
Occupancy Profile
Who is inside and how they use it
Homeownership
89.1%
owners
Renter-occupied
10.9%
Owner-occupied
89.1%
homeownership rate
21015
89.1%
Maryland
67.6%
United States
65.2%
Average household size
2.74
Owner-occupied
2.51
Renter-occupied
owner-occupied average size
21015
2.74
Maryland
2.7
United States
2.64
Housing Characteristics
Occupied unit characteristics
Tenure, crowding, and utilities
| 21015 | Maryland | United States | |
|---|---|---|---|
| Total occupied units | 11,012 | 2,362,928 | 129,227,496 |
| Year moved in | |||
| 2020 or later | 20% | 23.2% | 24.8% |
| 2010 to 2019 | 36.3% | 39% | 39.6% |
| 2000 to 2009 | 18.8% | 17.1% | 16.4% |
| 1999 or earlier | 24.9% | 20.8% | 19.1% |
| Occupants per room | |||
| 1.00 or fewer | 99.2% | 97.5% | 96.6% |
| 1.01 to 1.50 | 0.3% | 1.7% | 2.2% |
| 1.51 or more | 0.5% | 0.8% | 1.2% |
| Vehicles availability | |||
| No vehicles | 3.2% | 8.8% | 8.4% |
| 1 vehicle | 21.8% | 33.5% | 33.1% |
| 2 vehicles | 44.2% | 35.8% | 36.6% |
| 3 or more vehicles | 30.8% | 21.9% | 21.9% |
| House heating fuel used | |||
| Gas | 50.3% | 46.9% | 51.4% |
| Electricity | 39.7% | 44.1% | 41.3% |
| Solar | 0.1% | 0.4% | 0.3% |
| Fuel oil, kerosene etc | 7.5% | 6.6% | 3.9% |
| All other fuels | 1.1% | 1.6% | 2% |
| No fuel used | 1.4% | 0.6% | 1.2% |
| Selected characteristics | |||
| Lacking complete plumbing | 0.2% | 0.3% | 0.4% |
| Lacking complete kitchen | 1.7% | 0.6% | 0.8% |
| No telephone service available | 0.8% | 0.8% | 0.9% |
Housing Value
What owner-occupied units are worth
Median home value
$443,400
owner-occupied units
Housing Cost Burden
22%
of homeowners with a mortgage are cost-burdened
Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.
Financial characteristics
Property value and housing costs
Tenure, crowding, and utilities
| 21015 | Maryland | United States | |
|---|---|---|---|
| Property value | |||
| Median Value | $443,400 | $419,900 | $332,700 |
| Under $100,000 | 2.8% | 5% | 11.4% |
| $100,000 - $200,000 | 2.5% | 7.5% | 15.8% |
| $200,000 - $300,000 | 14.4% | 14.8% | 17.8% |
| $300,000 - $500,000 | 42.8% | 37.1% | 26.9% |
| $500,000 - $1,000,000 | 34.3% | 29.7% | 20.9% |
| $1,000,000 and more | 3.1% | 6% | 7.1% |
| Owner-occupied households | |||
| With a mortgage | 71.8% | 71% | 60.6% |
| Without a mortgage | 28.2% | 29% | 39.4% |
| Median monthly owner costs | |||
| With a mortgage | $2,365 | $2,347 | $1,963 |
| Without a mortgage | $701 | $753 | $638 |
| Gross rent | |||
| Median rent | $1,752 | $1,705 | $1,413 |
Education Profile
How educated is the community and how education pays off
Adults with a college degree
53.4%
of adults 25+ with a bachelor's degree or higher
21015
53.4%
Maryland
43.4%
United States
35.7%
Adults without a high school diploma
3.4%
of adults (25+) without a high school diploma
21015
3.4%
Maryland
8.8%
United States
10.4%
School Enrollment
Who is enrolled in school and at what level
School enrollment
8,485
population (age 3+) enrolled in school
College-going rate (18-24 yr olds)
42.7%
of 18-24-year-olds in college or graduate school
Enrollment & school type
Enrollment levels, college-going rate, and public vs private school split
Population 3+ currently enrolled in a school
| 21015 | Maryland | United States | |
|---|---|---|---|
| Total enrolled (age 3+) | 8,485 | 1,533,098 | 80,089,790 |
| Nursery / preschool | 7.1% | 5.7% | 5.7% |
| K–12 | 71.5% | 66.3% | 67.6% |
| Kindergarten | 6% | 4.9% | 5% |
| Elementary: Grades 1–4 | 20.4% | 19.5% | 19.8% |
| Elementary: Grades 5–8 | 24.8% | 20.5% | 21% |
| High School: Grades 9–12 | 20.4% | 21.5% | 21.7% |
| College or graduate school | 21.3% | 28% | 26.7% |
| College, undergraduate | 16.5% | 20.4% | 21% |
| Graduate, professional school | 4.9% | 7.6% | 5.8% |
| College-going rate · 18-24 yr olds | 42.7% | 41.8% | 40.9% |
| School type | |||
| Public school | 83% | 80% | 82% |
| Private school | 17% | 20% | 18% |
Education Attainment by Level & Gender
What is the highest level of education completed among adults
Education attainment
20,144
population 25 years and over
Attainment by gender
Male vs Female
Adults (25+) · Share within each education level
Educational Attainment Overview
Distribution and key education attainment rates for adults (25+)
Highest credential completed · adults 25+
| 21015 | Maryland | United States | |
|---|---|---|---|
| Population (25+) | 20,144 | 4,301,335 | 230,807,303 |
| Less than 9th grade | 0.8% | 4% | 4.7% |
| 9th–12th, no diploma | 2.6% | 4.8% | 5.7% |
| High school diploma or GED | 20% | 23.4% | 26% |
| Some college, no degree | 14.4% | 17.4% | 19.1% |
| Associate's degree | 8.8% | 6.8% | 8.8% |
| Bachelor's degree or higher | 53.4% | 43.4% | 35.7% |
| Bachelor's degree | 30.2% | 22.7% | 21.6% |
| Graduate or professional | 23.2% | 20.8% | 14.1% |
| High School or higher | 96.6% | 91.1% | 89.6% |
Earnings by education level
percentage as applicable
Median Earnings
$82,606
Median earnings for adults 25+, by level
Poverty Rate
2.4%
for ages 25+, with bachelors degree or higher
Outcomes by Education Level
Earnings and poverty rates across education levels (25+)
Adults 25+
| 21015 | Maryland | United States | |
|---|---|---|---|
| Median earnings | |||
| Population 25+, with earnings | $82,606 | $65,293 | $52,696 |
| Less than high school graduate | $35,536 | $35,487 | $32,485 |
| High school graduate (includes equivalency) | $52,457 | $45,113 | $40,153 |
| Some college or associate's degree | $59,974 | $54,823 | $47,260 |
| Bachelor's degree | $93,525 | $80,465 | $70,044 |
| Graduate or professional degree | $107,566 | $105,640 | $90,720 |
| Poverty rates | |||
| Less than high school graduate | 5.9% | 20.9% | 24.2% |
| High school graduate (includes equivalency) | 6.2% | 12.6% | 14.4% |
| Some college or associate's degree | 7.8% | 8.3% | 9.8% |
| Bachelor's degree or higher | 2.4% | 3.5% | 4.5% |
About Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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