I would say city is South Manchester longsight , moss side etc probably Gorton , Denton etc on the East Side , for United a lot in East Manchester and parts of North Manchester , the rest of the city mainly an even spread , then surrounding areas United have a lot in Salford area , city in Stockport and Tameside , regarding st olders i think there was some kind of study a few years back and United had marginally more in greater Manchester but there was not a lot in it , as regards religion back in the 50s and 60s United were mainly known as a Catholic club and had a lot of support in the Irish Community but i dont think thats there some much nowadays , United of course had a lot of out of town fans mainly because of a nations sympathy after Munich , both teams have very loyal core support , there is a lot of bitterness unfortunately but i think United fans despise Liverpool more than any other club