The original meaning is fairly insulting, a "tyke" being defined as an uncouth or boorish individual. Yorkshire folk are also referred to as tykes (they do have a reputation for being unduly, even unnecessarily direct in their speech), but despite the origin of the word, many Yorkshiremen, proud of their county and heritage, refer to themselves as tykes, with heads held high.

There is even a site ( specialising in properties for sale in Yorkshire.