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Zip Code 21046 — Columbia, MD

21046 is a ZIP Code associated with Columbia, MD, located within Howard. The postal region supports an estimated population of 15,608 residents across Data Pending housing units, with a population density of 771.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.173570, -76.841830)

Data MetricLocal Statistic
Postal / Zip Code21046
Primary CityColumbia
State / ProvinceMD
CountyHoward
Total Population15,608
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density771.6 people/sq mi
TimezoneAmerica/New_York

How 21046 Compares

MetricZIP 21046Howard CountyMD State Average
Population15,608335,5126,205,597
Median IncomeData PendingN/AN/A
Population Density771.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 21045Columbia2.4 mi40,034N/A
Zip 20763Savage2.7 mi2,601N/A
Zip 20723Laurel2.9 mi36,866N/A
Zip 20794Jessup3.2 mi16,814N/A
Zip 21044Columbia3.4 mi44,114N/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 →