Columbia Gas of Virginia delivers clean, affordable and efficient natural gas to more than 250,000 customers in portions of N ... orthern Virginia, Hampton Roads, suburban Richmond, Central Virginia, the Shenandoah Valley, the Lynchburg region and parts of Western Virginia. Headquartered in Chesterfield County, it is one of NiSource’s seven regulated utility companies. NiSource (NYSE: NI) is one of the largest fully-regulated utility companies in the United States, serving approximately 3.5 million natural gas customers and 500,000 electric customers through its local Columbia Gas and NIPSCO brands. read more