1848
Government
McKinney established as Collin County seat
1870
Transport
Railroad reaches McKinney
1913
Architecture
Collin County Courthouse completed
1950
Government
Population around 10,000
1990
Government
Population still 21,000
2000
Government
Population reaches 54,000
2010
Government
Population reaches 131,000; Craig Ranch develops
2014
Government
Named #1 Best Place to Live by Money Magazine
2015
Civil Rights
Pool party incident sparks national debate
2020
Architecture
Historic square preserved amid growth
2024
Government
Population surpasses 242,000