21251 ZIP Code — Baltimore, MD
Baltimore City County, Maryland
ZIP code 21251 is located in Baltimore, Maryland, within Baltimore City County. It covers approximately 0.12 square miles and serves a population of 319 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410/443.
About ZIP code 21251
The housing stock consists of a mix of housing types.
The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 13 minutes is near the national average. Remote work is prevalent — 28% of workers work from home.
Educational attainment is high — 50% of residents hold a bachelor's degree or higher, well above the national average of 33%.
319
population
0.12
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
21251 ZIP code map
Cities in ZIP code 21251
Below are the cities the US Postal Service accepts for ZIP code 21251. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Baltimore | Acceptable |
| Baltimore | Preferred |
Nearby ZIP codes
21214 Baltimore (1.2 mi)
21218 Baltimore (1.4 mi)
21239 Baltimore (1.4 mi)
21213 Baltimore (1.7 mi)
21206 Baltimore (2.5 mi)
21212 Baltimore (2.5 mi)
21205 Baltimore (2.8 mi)
21210 Baltimore (3 mi)
21211 Baltimore (3.2 mi)
21202 Baltimore (3.5 mi)
21252 Towson (3.6 mi)
21231 Baltimore (3.8 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 319 |
| Population density | 2,658 / sq mi |
| State FIPS | 24 |
| County FIPS | 510 |
| Geography | |
|---|---|
| Land area | 0.12 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 39.3423 |
| Longitude | -76.5821 |
| Timezone | Eastern (ET) |
| Area code | 410/443 |
Total population by age
Gender
Race & ethnicity
Demographics & statistics
319
Population
2,658
People per sq mi
19.6
Median age
$0
Median household income
$4,096
Per capita income
$0
Median home value
$0
Median monthly rent
0.0%
Home ownership
0.0%
Poverty rate
23.8%
Unemployment
0
Housing units
50.0%
Bachelor's or higher
Age distribution
Male
Female
138
15–19
56
75
20–24
30
4
25–34
1
7
35–44
3
4
45–54
1
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 0 | 0.0% |
| 18 and over | 319 | 100.0% |
| 65 and over | 0 | 0.0% |
| Median age | 19.6 years | |
Race & ethnicity
Black or African American
68.2%
White
23.8%
Two or more races
4.9%
Hispanic or Latino
1.5%
Asian
1.5%
| Group | Count | % |
|---|---|---|
| Black or African American | 221 | 68.2% |
| White | 77 | 23.8% |
| Two or more races | 16 | 4.9% |
| Hispanic or Latino | 5 | 1.5% |
| Asian | 5 | 1.5% |
Household income
Housing
Home values
Housing overview
| Metric | Value |
|---|---|
| Median home value | $0 |
| Median rent / month | $0 |
| Owner occupied | 0.0% |
| Renter occupied | 0.0% |
| Vacant | 0.0% |
| Single-family detached | 0.0% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.0% |
| Median rooms | 0.0 |
| Avg household size (owned) | 0.00 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 0.0% |
| 1990–1999 | 0.0% |
| 1980–1989 | 0.0% |
| 1970–1979 | 0.0% |
| 1960–1969 | 0.0% |
| 1950–1959 | 0.0% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 0.0% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 0.0% |
| 3 bedrooms | 0.0% |
| 4 bedrooms | 0.0% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 0.0% |
| 2 vehicles | 0.0% |
| 3 or more | 0.0% |
Heating fuel
| Fuel type | % |
|---|
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 0 | 0.0% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 0 | 0.0% |
| Female householder, no spouse | 0 | 0.0% |
| Households with children under 18 | 0 | 0.0% |
| Households with seniors (65+) | 0 | 0.0% |
| Average household size | 0.00 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 100.0% | 100.0% |
| Married | 0.0% | 0.0% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 0.0% |
| Divorced | 0.0% | 0.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
0.0%
HS graduate
25.0%
Some college, no degree
25.0%
Associate's degree
0.0%
Bachelor's degree
50.0%
Graduate / professional
0.0%
| Metric | % |
|---|---|
| HS diploma or higher | 100.0% |
| Bachelor's or higher | 50.0% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 0 | 0.0% |
| High school | 0 | 0.0% |
| College / grad school | 309 | 100.0% |
Employment
Industry of employment
Education & healthcare
58.3%
Retail trade
27.1%
Information
6.3%
Finance & real estate
4.2%
Arts, food & hospitality
4.2%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 29.2% |
| Service | 33.3% |
| Sales & office | 31.3% |
| Natural resources & construction | 0.0% |
| Production & transportation | 6.3% |
Employment type
| Type | % |
|---|---|
| Private sector | 64.6% |
| Government | 35.4% |
| Self-employed | 0.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 19.8% |
| Carpool | 5.5% |
| Public transit | 0.0% |
| Walk | 47.3% |
| Work from home | 27.5% |
| Other means | 0.0% |
| Avg commute (minutes) | 13.4 |
Poverty
All people
0.0%
Under 18 years
0.0%
18 and over
0.0%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 0.0% |
| Retirement income | 0.0% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 0.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 23.8% |
| High blood pressure | 13.5% |
| High cholesterol | 8.2% |
| Diabetes | 1.6% |
| Heart disease | 0.6% |
| Stroke | 0.5% |
| Asthma | 12.2% |
| Arthritis | 3.4% |
| Kidney disease | 0.8% |
| Pulmonary disease | 1.2% |
| Cancer | 0.5% |
| Behavior / access | % |
|---|---|
| Smoking | 9.1% |
| Binge drinking | 23.7% |
| No physical activity | 14.7% |
| Less than 7 hrs sleep | 37.3% |
| Depression | 20.0% |
| Fair or poor health | 7.0% |
| Poor mental health | 19.9% |
| Poor physical health | 3.7% |
| No health insurance | 12.5% |
| Visited doctor (checkup) | 76.6% |
| Visited dentist | 62.9% |
| Cholesterol screening | 82.2% |
| Teeth loss | 0.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 0 | 0.0% |
| Disability | % |
|---|---|
| Any disability | 5.0% |
| Under 18 | 0.0% |
| 18–64 years | 5.0% |
| 65 and over | 0.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 77.7% |
| Public insurance | 23.2% |
| No insurance | 6.6% |
| Uninsured under 19 | 6.3% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 319 | 100.0% |
| Spanish | 5 | 1.6% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 5 | 1.6% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 296 | 92.8% |
| Born in same state | 296 | 92.8% |
| Born in different state | 175 | 54.9% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 23 | 7.2% |
| Not a US citizen | 5 | 21.7% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 8 | 2.5% |
| Ancestry | Count | % |
|---|---|---|
| English | 6 | 1.9% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 0.0% |
| Internet access | 0.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 21251
What city is ZIP code 21251 in?
ZIP code 21251 is primarily assigned to Baltimore, Maryland.
What county is ZIP code 21251 in?
ZIP code 21251 falls within Baltimore City County, Maryland.
How educated is the population of ZIP code 21251?
50% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the population of ZIP code 21251?
ZIP code 21251 has an estimated population of 319 residents, with a density of 2,703 people per square mile.
What timezone is ZIP code 21251 in?
ZIP code 21251 observes the EST timezone.