Collin County on the map of Texas 2024. Cities, roads, borders and directions in Collin County of Texas.

Collin County is located on the northeastern outskirts of DFW metroplex and has a total population of one million people. The county seat is McKinney and the largest city is Plano. Collin County's area is 886 square miles. This map shows the borders of Collin County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Collin County.