Is NYC considered "surburbia?"
Newsday used to be a "city" paper, but some years ago they decided to officially be a suburban paper (Long Island, really). They were not competitive in the city with the Times, Daily News, and Post. The Post consistent improves its circulation while the Times and News have been stagnant.
Newsday has always been the Long Island local paper, and very paleoliberal. They did publish a New York City-specific edition for about ten years, from roughly 1985-95, but it never really got any traction and the company finally killed it off and retreated to the safety of their monopoly position in Nassau and Suffolk.
They have since reestablished a bit of a beachhead in the City with a Queens edition, and you can still buy the paper at many newsstands throughout NYC. But not many do, except for other diehard paleolibs that like the editorial slant so much they don't care that most of the news coverage is about the suburbs.