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Zip Code 21046 — Columbia, MD

ZIP Code 21046 is associated with Columbia, MD, in Howard County. The listed population estimate is 15,608; estimated density is 771.6 people per square mile. Among records with population estimates, it ranks #8 of 20 in Howard County and #147 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.173570, -76.841830)

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

How 21046 Compares

MetricZIP 21046Howard County recordsMD records
Population estimate15,608335,512 (sum)6,205,597 (sum)
Population Density771.6 /sq mi----
County population rank#8 of 20----
State population rank#147 of 470----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MD

ZIP CodeCityDistancePopulation estimate
ZIP 21045Columbia2.4 mi40,034
ZIP 20763Savage2.7 mi2,601
ZIP 20723Laurel2.9 mi36,866
ZIP 20794Jessup3.2 mi16,814
ZIP 21044Columbia3.4 mi44,114

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 →