ZIP code · Baltimore · Maryland · United States

ZIP code 21210 — Baltimore

ZIP code 21210 serves Baltimore, Maryland.

Postal code
21210
Single source Value from one source, not cross-checked.
City
Baltimore
County
Baltimore (city) FIPS 24510
State
Maryland
Country
United States
Coordinates
39.3507, -76.6321 — precision precise (locality)
View on OpenStreetMap
Population
14,612 (ZCTA, ACS 5-year)
Population density
4,238 / sq mi
Land area
3.4 sq mi (8.9 km²) (ZCTA, ACS 5-year)
Median household income
$108,929
Per-capita income
$64,671
Median age
29.4
Households
5,048
Housing units
5,416
Median home value
$521,700
Median gross rent
$1,498 / month
Congressional districts
MD-2 (also MD-7) (119th Congress)
USDA hardiness zone
7b (5 to 10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
410, 443, 667, 301
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 87°F), coldest Jan (avg low 27°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F424654667382878477665646
Avg low °F272834455564696760493932

NOAA 1991–2020 climate normals from the nearest station: CYLBURN (1.2 mi) · NOAA NCEI

Places in ZIP 21210

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page