Las Vegas or "Los" Vegas?

Lots of people seem to pronounce it “Los Vegas” - any reason for this, or is it just a mistake?

It is a mistake plain and simple. Some people may get confused since of Los Angeles .

Just Anglicization, so far as I know. I have absolutely no knowledge of Spanish, but I’d suppose that Las is feminine, while Los is masculine.

http://www.ci.las-vegas.nv.us/history/default.htm

Probably because to alot of people Las Vegas is “Lost Wages”.

In English, the short “o” sound is similar to the “ah” sound, so it’s just lazy speech (and a desire to seem ‘unaffected’).

How the fuck am I s’pose to pronounce it?

Goph, from… ahh… Vegas.