Carroll County's growing community has caused the Chesapeake and Potomac Telephone Co. to add an exchange to the Westminster area's battery of phone numbers.
"The demand for telephone numbers has increased and we needed to add a new exchange," said Donora Dingman, C&P;'s manager of external affairs in Carroll County. "It gives us a lot more telephone numbers to serve customers from that particular wire center."
Carroll County customers who now request a Baltimore line -- the ability to call the Baltimore Metropolitan Exchange Area toll-free -- may receive an 840 exchange, she said.
Similar to the Reisterstown-based 876 and 239 numbers, the new exchange also allows customers to call most Hampstead, Parkton, Sparks-Glencoe, Sykesville, Taneytown and Westminster numbers toll-free.
The new exchange's residential customers who request an unlimited number of calls will pay $14.88 per month for the phone service, Ms. Dingman said.
New exchanges are created "when we get near exhausting the existing numbers," she said. "We don't want to go down to the wire and run out of numbers."
Telephone officials don't usually issue all 9,999 numbers possible, Ms. Dingman said.
"There are different hundred blocks that are used for different purposes," she said, referring to groups of numbers that are reserved for businesses. "It's not like every phone number that's available is used up."