DOWNTOWN COLUMBUS, NORTH CAROLINA. COUNTY SEAT OF POLK COUNTY NC. in the Center of Town. Build multi-use Residential, Retail, Office, and special-use... buildings. The acreage allows for unlimited possibilities, and there are so many needs. It is one minute to Interstate 26 and less than five minutes to Highway 74. Conveniently located between Asheville, Hendersonville, Greenville, and Spartanburg, South Carolina, Columbus is only 7 miles from the Tryon International Equestrian Center. Call today!