An article on this on GD said that there were less than a dozen clubs in the US that do not allow women. What clubs are still on that list? Chicago?
Chicago Golf Club has never been men-only [to play], as far as I know. However there are/were several such clubs in Chicago: Old Elm, Bob O'Link, Butler National, and Black Sheep.
Others that I know of: Garden City Golf Club NY, Blind Brook NY, Burning Tree MD, The Sharon Club OH, Pepper Pike Club OH. The Golf Club [OH] used to be, but I think they changed the policy. It's possible that a couple of others have, too.