ZIP code · Millersville · Maryland · United States

ZIP code 21108 — Millersville

ZIP code 21108 serves Millersville, Maryland.

Postal code
21108
Single source Value from one source, not cross-checked.
City
Millersville
County
Anne Arundel FIPS 24003
State
Maryland
Country
United States
Coordinates
39.1041, -76.6190 — precision precise (locality)
View on OpenStreetMap
Population
17,894 (ZCTA, ACS 5-year)
Population density
1,386 / sq mi
Land area
12.9 sq mi (33.5 km²) (ZCTA, ACS 5-year)
Median household income
$146,556
Per-capita income
$62,037
Median age
41.5
Households
6,339
Housing units
6,526
Median home value
$543,200
Median gross rent
$2,030 / month
Congressional district
MD-3 (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
443, 410, 667
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 89°F), coldest Jan (avg low 25°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F434655677684898780685748
Avg low °F252734445363686659473730
Precip in3.12.94.03.43.94.04.54.14.43.93.13.7

NOAA 1991–2020 climate normals from the nearest station: BALTIMORE WASH INTL AP (5.5 mi) · NOAA NCEI

Places in ZIP 21108

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