Home > MD > Carroll County > Westminster > Zip 21157

Zip Code 21157 — Westminster, MD

21157 is a ZIP Code associated with Westminster, MD, located within Carroll. The postal region supports an estimated population of 38,984 residents across Data Pending housing units, with a population density of 193.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.548890, -76.981620)

Data MetricLocal Statistic
Postal / Zip Code21157
Primary CityWestminster
State / ProvinceMD
CountyCarroll
Total Population38,984
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density193.7 people/sq mi
TimezoneAmerica/New_York

How 21157 Compares

MetricZIP 21157Carroll CountyMD State Average
Population38,984158,3226,205,597
Median IncomeData PendingN/AN/A
Population Density193.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 21048Finksburg5.3 mi10,481N/A
Zip 21776New Windsor6.8 mi6,261N/A
Zip 21158Westminster7.3 mi22,083N/A
Zip 21074Hampstead8.7 mi14,777N/A
Zip 21155Upperco9.5 mi3,313N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →