Welcome to Columbia ...

Columbia is located in Delaware County<1>.

The pronunciation of Columbia: koh-LUM-bee-uh<2>

Time Zone: Columbia lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time

Area Codes for Columbia: 740 & 220<3>

Communities Also Named Columbia ...

While we believe that this Columbia is located in Delaware County, we know of another 5 Ohio communities named Columbia. Those communities are located in the following counties: Clark, Hamilton, Stark, Tuscarawas and Williams County.

Beyond Ohio, there are 49 communities that are also named Columbia - they are located in Alabama (2), Arizona, Arkansas, California, Connecticut, Delaware, Florida, Illinois, Indiana, Iowa, Kansas (3), Kentucky, Louisiana (2), Maine, Maryland, Michigan (2), Minnesota, Mississippi, Missouri (2), Nevada (3), New Hampshire, New Jersey, New York, North Carolina, Oklahoma, Pennsylvania (2), South Carolina, South Dakota, Tennessee, Utah, Virginia, Washington (2), West Virginia and Wisconsin.

For more information, see our Tidbits & Trivia Page for Columbia.

Footnotes ...

<1>	If you're interested in how the shape of Ohio's counties, including Delaware, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>	The pronunciation we've provided is our attempt to give a phonetic pronunciation for Columbia. While it might not be exactly right, hopefully it will be close. If we have it wrong or there's a better way to pronounce the name, please contact us through our Feedback Page.
<3>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 740 code has been Overlayed with the 220 area code. New phone numbers in the Columbia area will be assigned with one of these codes: 740 or 220. As a result, placing a call in the Columbia area will require 10-digit dialing (where you enter both the area code and then the phone number).