A total of 179 cases of child sexual exploitation (CSE) are being investigated in Keighley and Bradford, West Yorkshire Police has said.
The cases involve 165 suspects and more than 100 victims.
A police spokesperson said many cases had "multiple suspects and multiple victims" but there was also a large number involving single suspects.
Last year, 12 men were jailed for their part in the abuse of a single victim in Keighley.
Eleven were jailed at Bradford Crown Court after being convicted of raping the girl from the age of 13 and another man was sentenced for sexual activity with her.
'Abhorrent crime'
The CSE figures, which were given to the Keighley News and confirmed to the BBC by police, compare with last year's figure of 220 cases.
There were 261 suspects under investigation at the same time in 2016.
A police spokesperson said: "West Yorkshire Police and partners have been proactive in their approach to encourage victims to come forward and reassure them that all reports will be taken seriously.
"We have developed a far greater understanding of CSE than in the past and this has led to rapid action to prioritise resources to improve the identification and prosecution of perpetrators of this abhorrent crime."
http://www.bbc.com/news/uk-england-leeds-40143450

A lot of these victims come from broken homes. A lot were in care. One of the reasons nobody cared. Unloved and uneducated, they were gullible to anyone showing them attention. Some of these girls turn into devout Muslims and later Jihadists, to fight against their brethren, who were unable to protect them. There is no evidence of this happening in parts of the south of the country, but people are still beginning to move away from areas, that are becoming more and more Muslim. The problems Brits have are weak and corrupt local government, the reality is, these towns elect MPs and councillors who will always hide this sickness, just to keep their votes. As a Canadian, I'm truly stunned at the levels of government oppression, the UK is committing against it's own citizens. The cancer of political correctness contaminates the State from top to bottom. Until they remove the 'progressives' at the top, this type of abuse will continue & innocent lives will be ruined. I have great respect for those who fight back.