ZIP Code 21045

Zip Code: 21045
Type: Standard
Official USPS city name: Columbia
Official USPS State Code: MD
Official State Name: Maryland
ZCTA: TRUE
Population: 40365.0
Density: 1605.7
Primary Official County Code: 24027
Primary Official County Name: Howard
Official County Name: Howard
Official County Code: 24027
Imprecise: FALSE
Military: FALSE
Timezone: America/New_York (19:05 PM Thursday, September 18 2025-09-18 (GMT -0400))
Geo Point: 39.20617, -76.82747