I think you can safely say that any police department of any size in North America, Europe, or East Asia issues semiautomatic pistols.
I think you could with equal certainty say that anyone who says there are no police departments issuing revolvers in North America, Europe or East Asia is wrong.
I am familiar with some two-, three- and four-man municipal police departments where everyone is still carrying revolvers on duty. This may invite a semantic analysis of the word "issue" because these departments do not inventory weapons that are then assigned to individual officers, instead the officer acquires the pistol and is reimbursed by the department.
I was stopped in a small town in east Arkansas by a municipal police officer who was still carrying a S&W revolver. The reason I was given for the stop was that it was 2:00 a.m., I was driving a restored 1968 Plymouth Barracuda and I slowed down to the speed limit rather than blowing through at highway speed like everyone else. Yes, obeying the law was cited as suspicious behavior. But that's a discussion for inside a courtroom, not a roadside where it would be so easy to be perceived as a threat. Personally, I think he was just bored and wanted to look at the car.