To gas prices, foreclosure rates and the cost of rice, add this rising economic indicator: the number of tips to the police from people hoping to collect reward money.

Calls to the Southwest Florida Crime Stoppers hot line in the first quarter of this year were up 30 percent over last year. San Antonio had a 44 percent increase. Cities and towns from Detroit to Omaha to Beaufort County, N.C., all report increases of 25 percent or more in the first quarter, with tipsters telling operators they need the money for rent, light bills or baby formula.

“For this year, everyone that’s called has pretty much been just looking for money,” said Sgt. Lawrence Beller, who answers Crime Stoppers calls at the Sussex County, N.J., sheriff’s office. “That’s as opposed to the last couple of years, where some people were just sick of the crime and wanting to do something about it.”

As a result, many programs report a substantial increase in Crime Stopper-related arrests and recovered property, as callers turn in neighbors, grandchildren or former boyfriends in exchange for a little cash.

On Friday, a woman called the Regional Crime Stoppers line in Macon, Ga., to find out when she could pick up her reward money for a recent tip. She was irritated to learn that she would have to wait until Monday.

“I’m in a bind, I’m really in a bind,” she told the hot-line operator. “There’s a lot of stuff I know, but I didn’t open my mouth. If I weren’t in a bind, I wouldn’t open my mouth.”

When she learned the money was not available, she said she would call back with the whereabouts of another suspect whom she had just seen “going down the road.”

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Some people have made a cottage industry of calling in tips. Although repeat callers do not give their names, operators recognize their voices.

“We have people out there that, realistically, this could be their job,” said Sgt. Zachary Self, who answers Crime Stoppers calls for the Macon Police Department.

“Two or three arrests per week, you could make $700, $750 per week,” Sergeant Self said. “You could make better than a minimum-wage job.”