​Collin County 

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Marker Text: Formed from Fannin County. Created April 3, 1846. Organized July 13, 1846. Named in honor of Collin McKinney 1766-1861, land surveyor, signer of the Texas Declaration of Independence, member of Congress, Republic of Texas, member of the Texas Legislature. County seat, Buckner, 1846-1848 McKinney, since. (1936) 

Marker No: 947

1936 Pink Granite Centennial County Marker

Geographic: 33.197235, -96.614815

Location: On Old Courthouse Grounds, at the corner of Kentucky and Louisiana Streets, McKinney