Are Baltimore and Washington, DC really southern cities?

I know that technically both of these cities may have been considered southern geographically, but neither one of these cities seem very southern to me. I have lived in the area for 5 years, but I am originally from Louisiana. I sometimes get angry at people from the north for thinking that the south is all gr fields and farms with no form of urban life. But even urban life in the south has a different feel than urban life in the north, specifically on the east coast. Growing up in the south, we never considered either one of these cities part of the south, culturally speaking. They were considered part of the east coast, along with Philadelphia, New York and Boston. Being here, I have always felt like I was on the northeast coast, until a recent discussion came up with friends about Baltimore/DC being below the Mason Dixon Line, and their links with the confederacy. While I acknowledge that this history is true, it still has not removed my feeling that this is definitely not considered the south.