John Anderson and Sharon Rapoport estimate they spend $400 a month, or close to $5,000 a year, keeping their family of four entertained at home.

There are the $30-a-month data plans on their BlackBerry Tour cellphones. The Roanoke, Va., couple’s teenage sons, Seth and Isaac, each have $50-a-year subscriptions for Xbox Live and send thousands of texts each month on their cellphones, requiring their own data plans.

DirecTV satellite service, high-speed Internet access and Netflix for movie nights add more.

“We try to be aware of it so it doesn’t get out of control,” said Mr. Anderson, who with his wife founded an advertising agency. “But, yeah, I would say we’re pretty wired.”

It used to be that a basic $25-a-month phone bill was your main telecommunications expense. But by 2004, the average American spent $770.95 annually on services like cable television, Internet connectivity and video games, according to data from the Census Bureau. By 2008, that number rose to $903, outstripping inflation. By the end of this year, it is expected to have grown to $997.07. Add another $1,000 or more for cellphone service and the average family is spending as much on entertainment over devices as they are on dining out or buying gasoline.