 The neighborhood boundaries are Colfax Ave to the north, 6th Ave to the south, Holly Street to the west and Quebec to the east.What is commonly known as East Montclair is located east of Quebec, north of 11th Ave, south of Colfax and west of Yosemite.Montclair Post Office is located in East Montclair, which borders Lowry to the south and Aurora to the east.