
The name goes back to the founding of Texas itself. Both the city and Collin County are named for Collin McKinney — a surveyor and pioneer who was one of the five men who drafted, and a signer of, the Texas Declaration of Independence in 1836, and the oldest of all the signers. He never actually lived in the town that carries his name, settling instead farther east near the Red River. Collin County was created in 1846; in 1848 the county seat moved here, and the next year William Davis donated 120 acres for the townsite.
A county-seat town grew here for two reasons: cotton and the railroad. When the Houston and Texas Central Railroad reached McKinney in 1872, the town became a regional shipping hub for cotton and grain, and the courthouse era was the era when, as people here still say, cotton was king. Gins, flour mills, and a cotton mill turned the rich Blackland Prairie soil into the town's livelihood for generations; by the 1920s Collin County was one of the largest cotton-producing counties in the entire country.
Why People Visit McKinney
Visitors choose McKinney for its handsome square, approachable museums, and easy walkability. It balances small-city heritage with everyday outdoor spaces, from the courthouse and Chestnut Square to the Heard sanctuary and the park trails. Families and day-trippers find a friendly layout and an unhurried pace, with year-round appeal in its parks, paths, and public spaces — and the historic square always at the center of it.