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ZIP Code 21231
Baltimore, MD, Baltimore city
Population
14,969
Land area
0.9sq mi
People per sq mi
17,257
City
Baltimore
ZIP 21231 and nearby ZIP codes
ZIP 21231 at a glance
- ZIP 21231 (Baltimore) is about 27 times as dense as Maryland as a whole.
- Households here earn a median of $85,254 a year, 18% less than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $350,100 (17% below Maryland) and median rent is $1,796 a month.
Local data for ZIP 21231
Counts from official public data
Housing and community stats
ZIP 21231, American Community Survey 2020-2024
Median household income
$85,254
Poverty rate
20.6%
Median home value
$350,100
Prices +4.7% in a year
Median rent
$1,796/mo
Homeownership
34.2%
Bachelor's or higher
64.3%
Median age
32.7
Average commute
24.1 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
509
ZIP Business Patterns 2023
Employees
9,784
$982M annual payroll
PPP loans
$47.9M
625 loans
Campaign donations
$1.7M
5% D, 1% R, 2026 cycle
Environment and hazard risk
ZIP 21231, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: heat wave
Storm events since 1996
695
Countywide, mostly winter weather
Flood insurance policies
678
0.3% of homes, county
July high / Jan low
90° / 30°F
43.7 inches of rain a year
Health statistics
Share of adults in ZIP 21231, CDC PLACES estimates
Obesity
31.2%
U.S. 33.3% -2.1 pts
Diabetes
8.2%
U.S. 12.1% -3.9 pts
Smoking
11.4%
U.S. 12.8% -1.4 pts
Uninsured (18-64)
8.1%
U.S. 11.1% -3.0 pts
Frequently asked questions
- What city is ZIP code 21231?
- ZIP code 21231 is in Baltimore, MD (Baltimore city).
- What county is ZIP code 21231 in?
- ZIP code 21231 is mostly in Baltimore city, Maryland.
- How many people live in ZIP code 21231?
- About 14,969 people live in the 21231 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.