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Howard County, Maryland locator map According to the United States Census Bureau, Columbia is a Census-designated Place that is located in Howard County, Maryland at 39.24 degrees North and 76.84 degrees West.  The place's time zone is America/New York, and the place's primary telephone area code is 410.  The land area of Columbia is about 31.93 square miles, whereas the water area of the place is about 0.26 square miles.  Howard County's land area is about 251 square miles, so the place occupies about 12.7 percent of the county's total land area.

The Census Bureau estimates that Columbia had about 102,116 residents in 2014, which is approximately 3,198 people per square mile of land area. 

According to recent American Community Survey data, Columbia had 39,978 total estimated households and the median household income was about $100,252 per year. 

The Maryland counties map at upper right shows Howard County, highlighted in red.  Use the menu below to display interactive maps of Columbia, either in a frame on this page or in full-screen mode. 

Use the menu below to display categorized Columbia directories. 

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