21230 ZIP Code — Baltimore, MD
Baltimore City County, Maryland
ZIP code 21230 is located in Baltimore, Maryland, within Baltimore City County. It covers approximately 6.32 square miles and serves a population of 32,883 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 667/410.
About ZIP code 21230
The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $323,300. Owner-occupancy sits near the national average at 51%.
The gap between median ($95,470) and mean household income suggests income inequality — a small number of higher earners pull the average up.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 27 minutes is near the national average.
Educational attainment is high — 57% of residents hold a bachelor's degree or higher, well above the national average of 33%.
32,883
population
6.32
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
21230 ZIP code map
Cities in ZIP code 21230
Below are the cities the US Postal Service accepts for ZIP code 21230. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Baltimore | Preferred |
Nearby ZIP codes
21263 Baltimore (1.9 mi)
21241 Baltimore (1.9 mi)
21264 Baltimore (1.9 mi)
21279 Baltimore (1.9 mi)
21233 Baltimore (1.9 mi)
21278 Baltimore (1.9 mi)
21290 Baltimore (1.9 mi)
21275 Baltimore (1.9 mi)
21289 Baltimore (1.9 mi)
21287 Baltimore (1.9 mi)
21298 Baltimore (1.9 mi)
21273 Baltimore (1.9 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 32,883 |
| Population density | 5,203 / sq mi |
| State FIPS | 24 |
| County FIPS | 510 |
| Geography | |
|---|---|
| Land area | 6.32 sq mi |
| Water area | 2.22 sq mi |
| Latitude | 39.2643 |
| Longitude | -76.6217 |
| Timezone | Eastern (ET) |
| Area code | 667/410 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 31.6% | 46.5% | 28.2% |
| $50k – $100k | 23.8% | 28.0% | 28.2% |
| $100k – $200k | 30.3% | 18.7% | 30.1% |
| Over $200k | 14.4% | 6.8% | 13.4% |
Demographics & statistics
32,883
Population
5,203
People per sq mi
33.5
Median age
$95,470
Median household income
$62,613
Per capita income
$323,300
Median home value
$1,700
Median monthly rent
50.8%
Home ownership
14.0%
Poverty rate
4.4%
Unemployment
10,159
Housing units
57.3%
Bachelor's or higher
Age distribution
Male
Female
995
Under 5
1,031
805
5–9
834
792
10–14
819
522
15–19
540
1,021
20–24
1,056
4,559
25–34
4,720
2,481
35–44
2,568
1,522
45–54
1,576
828
55–59
857
831
60–64
861
1,169
65–74
1,210
415
75–84
430
217
85+
224
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 6,044 | 18.4% |
| 18 and over | 26,839 | 81.6% |
| 65 and over | 3,665 | 11.1% |
| Median age | 33.5 years | |
Race & ethnicity
White
55.1%
Black or African American
24.9%
Hispanic or Latino
7.1%
Other race
5.5%
Two or more races
4.4%
Asian
2.4%
American Indian / Alaska Native
0.5%
| Group | Count | % |
|---|---|---|
| White | 19,498 | 55.1% |
| Black or African American | 8,826 | 24.9% |
| Hispanic or Latino | 2,501 | 7.1% |
| Other race | 1,944 | 5.5% |
| Two or more races | 1,569 | 4.4% |
| Asian | 855 | 2.4% |
| American Indian / Alaska Native | 186 | 0.5% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 31.6% | 46.5% | 28.2% |
| $50k – $100k | 23.8% | 28.0% | 28.2% |
| $100k – $200k | 30.3% | 18.7% | 30.1% |
| Over $200k | 14.4% | 6.8% | 13.4% |
Under $10k
5.8%
$10k–$15k
3.2%
$15k–$25k
6.6%
$25k–$35k
5.5%
$35k–$50k
8.1%
$50k–$75k
10.8%
$75k–$100k
12.0%
$100k–$150k
18.2%
$150k–$200k
12.4%
$200k+
17.5%
| Range | % of households |
|---|---|
| Under $10k | 5.8% |
| $10k–$15k | 3.2% |
| $15k–$25k | 6.6% |
| $25k–$35k | 5.5% |
| $35k–$50k | 8.1% |
| $50k–$75k | 10.8% |
| $75k–$100k | 12.0% |
| $100k–$150k | 18.2% |
| $150k–$200k | 12.4% |
| $200k+ | 17.5% |
| Median income | $95,470 |
Housing
Home values
Under $50k
3.7%
$50k–$100k
8.7%
$100k–$150k
5.4%
$150k–$200k
7.3%
$200k–$300k
20.2%
$300k–$500k
35.9%
$500k–$1M
16.7%
$1M+
2.2%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $323,300 |
| Median rent / month | $1,700 |
| Owner occupied | 50.8% |
| Renter occupied | 49.2% |
| Vacant | 12.7% |
| Single-family detached | 6.9% |
| Large apartment buildings | 19.2% |
| Mobile homes | 0.1% |
| Median rooms | 5.2 |
| Avg household size (owned) | 2.15 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.2% |
| 2010–2019 | 11.1% |
| 2000–2009 | 8.3% |
| 1990–1999 | 4.4% |
| 1980–1989 | 4.9% |
| 1970–1979 | 4.3% |
| 1960–1969 | 5.6% |
| 1950–1959 | 7.3% |
| 1940–1949 | 4.6% |
| 1939 or earlier | 49.4% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.8% |
| 1 bedroom | 18.6% |
| 2 bedrooms | 39.0% |
| 3 bedrooms | 32.8% |
| 4 bedrooms | 7.3% |
| 5+ bedrooms | 0.5% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 15.4% |
| 1 vehicle | 45.3% |
| 2 vehicles | 32.0% |
| 3 or more | 7.3% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 61.0% |
| Electricity | 35.6% |
| Propane / LP gas | 1.1% |
| Fuel oil | 1.0% |
| Solar | 0.6% |
| No fuel used | 0.5% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 4,772 | 30.7% |
| Cohabiting couple | 1,826 | 11.7% |
| Male householder, no spouse | 4,020 | 25.8% |
| Female householder, no spouse | 4,942 | 31.8% |
| Households with children under 18 | 2,889 | 18.6% |
| Households with seniors (65+) | 2,947 | 18.9% |
| Average household size | 2.10 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 50.9% | 46.2% |
| Married | 38.5% | 35.7% |
| Separated | 2.6% | 1.5% |
| Widowed | 0.9% | 6.5% |
| Divorced | 7.0% | 10.1% |
Education
Less than 9th grade
4.1%
Some HS, no diploma
7.6%
HS graduate
14.0%
Some college, no degree
13.9%
Associate's degree
3.1%
Bachelor's degree
30.6%
Graduate / professional
26.7%
| Metric | % |
|---|---|
| HS diploma or higher | 88.3% |
| Bachelor's or higher | 57.3% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 666 | 9.9% |
| Kindergarten | 227 | 3.4% |
| Elementary school | 2,601 | 38.7% |
| High school | 935 | 13.9% |
| College / grad school | 2,300 | 34.2% |
Employment
Industry of employment
Education & healthcare
25.6%
Professional & management
22.3%
Finance & real estate
10.4%
Arts, food & hospitality
6.9%
Public administration
6.7%
Construction
5.5%
Retail trade
5.5%
Manufacturing
5.4%
Other services
3.6%
Transportation & utilities
3.5%
Information
2.4%
Wholesale trade
2.3%
Agriculture & mining
0.1%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 66.1% |
| Service | 11.6% |
| Sales & office | 14.2% |
| Natural resources & construction | 3.2% |
| Production & transportation | 4.9% |
Employment type
| Type | % |
|---|---|
| Private sector | 78.7% |
| Government | 18.2% |
| Self-employed | 3.1% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 62.1% |
| Carpool | 5.7% |
| Public transit | 4.7% |
| Walk | 6.4% |
| Work from home | 18.0% |
| Other means | 3.1% |
| Avg commute (minutes) | 27.3 |
Poverty
All people
14.0%
Under 18 years
21.8%
18 and over
12.2%
Married-couple families
3.3%
Female-led households
25.1%
Income support
| Source | % of households |
|---|---|
| Social Security | 17.9% |
| Retirement income | 15.3% |
| Supplemental Security | 6.0% |
| Cash public assistance | 2.5% |
| Food stamps / SNAP | 13.2% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 29.7% |
| High blood pressure | 28.2% |
| High cholesterol | 26.1% |
| Diabetes | 8.3% |
| Heart disease | 4.1% |
| Stroke | 2.4% |
| Asthma | 10.4% |
| Arthritis | 18.7% |
| Kidney disease | 2.3% |
| Pulmonary disease | 5.0% |
| Cancer | 4.7% |
| Behavior / access | % |
|---|---|
| Smoking | 16.3% |
| Binge drinking | 21.7% |
| No physical activity | 18.5% |
| Less than 7 hrs sleep | 33.6% |
| Depression | 22.5% |
| Fair or poor health | 12.0% |
| Poor mental health | 15.7% |
| Poor physical health | 7.8% |
| No health insurance | 10.7% |
| Visited doctor (checkup) | 73.8% |
| Visited dentist | 63.2% |
| Cholesterol screening | 89.7% |
| Teeth loss | 11.9% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 1,244 | 4.7% |
| Disability | % |
|---|---|
| Any disability | 13.5% |
| Under 18 | 3.9% |
| 18–64 years | 10.7% |
| 65 and over | 46.6% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 72.8% |
| Public insurance | 30.1% |
| No insurance | 6.3% |
| Uninsured under 19 | 9.1% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 30,857 | 93.8% |
| Spanish | 1,531 | 5.0% |
| Other Indo-European | 1,180 | 3.8% |
| Asian & Pacific Islander | 87 | 0.3% |
| Other languages | 184 | 0.6% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 30,133 | 91.6% |
| Born in same state | 29,683 | 90.3% |
| Born in different state | 19,017 | 57.8% |
| Foreign born | 450 | 1.4% |
| Naturalized citizen | 2,750 | 8.4% |
| Not a US citizen | 1,149 | 41.8% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 4,472 | 13.6% |
| French | 2,783 | 8.5% |
| Arab | 808 | 2.5% |
| Irish | 507 | 1.5% |
| English | 215 | 0.7% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 195 | 0.6% |
| German | 129 | 0.4% |
| Dutch | 85 | 0.3% |
| Norwegian | 61 | 0.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 47.3% |
| Internet access | 95.6% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 21230
What city is ZIP code 21230 in?
ZIP code 21230 is primarily assigned to Baltimore, Maryland.
What county is ZIP code 21230 in?
ZIP code 21230 falls within Baltimore City County, Maryland.
How educated is the population of ZIP code 21230?
57% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the typical home value in ZIP code 21230?
The median home value in ZIP code 21230 is $323,300.
What is the population of ZIP code 21230?
ZIP code 21230 has an estimated population of 32,883 residents, with a density of 5,205 people per square mile.
What is the median household income in ZIP code 21230?
The median household income in ZIP code 21230 is $95,470, above the national median of ~$75,000.
What timezone is ZIP code 21230 in?
ZIP code 21230 observes the EST timezone.