what county is wylie, tx in
WYLIE, TX (COLLIN COUNTY) WYLIE, TEXAS (Collin County). Wylie is on State Highway 78 sixteen miles south of McKinney in south central Collin County. It was organized in the early 1870s and originally called Nickelville, reportedly after the name of the first store. In 1886 the Gulf, Colorado and Santa Fe Railway laid tracks a half mile north of the original townsite.