LOUISVILLE, Ky. (WDRB) -- Louisville is leading the state in tourism growth. 

That's according to an annual study on economic impact recently released by the Kentucky Department of Tourism. 

The study revealed that the state's tourism industry grew to more than $15 billion in 2017. That's a nearly four percent increase over the previous year.

Jefferson County generated the highest number of total tourism spending with just over $3.5 billion.

Louisville Mayor Greg Fischer was not surprised by the news because Louisville has so much going for it -- including the Kentucky Derby. 

"We've got a lot of exciting stuff going on," Fischer said during a news conference on May 10. "The downtown convention center is opening August 1, so with all of the momentum we've got going on in the city right now, you can imagine it with the tens of thousands of new tourists on the streets every day as well."

The study also found 27,422 jobs were supported by the tourism industry in Jefferson County alone. 

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