'Big Time Rush' Star Kendall Schmidt -- I Moved to Vegas To Escape Crazy Fans

"Big Time Rush" lead singer Kendall Schmidt is so popular with the ladies ... he plunked down some major dough and moved all the way to Sin City to escape some love-crazed female fans ... TMZ has learned.

Sources close to Kendall tell TMZ ... several members of Kendall's team became concerned after some overzealous fans began camping outside of the 22-year-old's L.A. pad ... and they urged him to get another place where he could hide out.

We're told Kendall took the note and quickly found a place in Las Vegas -- inside a well-protected gated community.

Here are the stats -- 1,900 square feet, 3 beds, 3 baths ... and it cost somewhere between $300k and $400k.

We're told Kendall still owns his place in L.A. -- and will use the home when he comes to town -- but the Vegas pad will be his primary residence.