Its in westchester
No, it's in the City of Los Angeles. However, Westchester is part of Los Angeles, just as Venice is part of LA.
No, it isn't. LOL! Don't want to take my word for it?
This is from the official LAX website. You can argue with them as to who owns LAX and dispute what city LAX belongs to. Click on "Just the Facts". (How appropriate)
http://www.lawa.org/lax/generalDescription.cfm
"The airport occupies 3,425 acres (1,386 hectares) within the City of Los Angeles Reference point coordinates are 33o 56' north latitude by 118o 24' west longitude. Elevation is 125.55 feet"
By the way, LAX not only has their own DOA P.D. (Dept of airports P.D.) hired and trained by LA city, they also have an LAPD substation within the airport. LA in this case mean the City of Los Angeles.
Now, I think we've ascertained where LAX is.