Average Number of Consumers for All Sectors by Utility
| 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | |
| Total (non-municipal distributors) | 846,493 | 811,147 | 1,248,481 | 1,255,283 | 768,945 | 737,145 | 709,262 | 677,206 |
| Columbia Gas of Virginia Inc. | 186,946 | 181,083 | 172,727 | 167,766 | 166,824 | 159,948 | 155,854 | 149,164 |
| Commonwealth Public Service Corp. | 1076 | 994 | 987 | 941 | 914 | 873 | 845 | 798 |
| Roanoke Gas Co. | 52,138 | 51,224 | 50,429 | 48,966 | 48,268 | 46,907 | 45,652 | 44,443 |
| Shenandoah Gas Co. | 12,013 | 11,409 | 12,475 | 13,307 | 9,361 | 8,270 | 7,580 | 6,951 |
| Southwestern Virginia Gas Co. | 4,567 | 4,630 | 4,577 | 4,539 | 4,472 | 4,391 | 4,326 | 4,141 |
| United Cities Gas Co. | 21,800 | 21,389 | 19,996 | 19,818 | 22,003 | 21,077 | 20,305 | 19,732 |
| Virginia Gas Distribution Co. | 301 | 301 | 280 | 232 | 208 | 191 | 130 | 105 |
| Virginia Natural Gas Inc. | 236,449 | 230,595 | 231,823 | 215,962 | 208,352 | 201,465 | 193,930 | 185,697 |
| Washington Gas Light Co. | 331,203 | 309,522 | 755,187 | 783,752 | 308,543 | 294,023 | 280,640 | 266,171 |