Collin County added the second-most residents of any U.S. county between 2024 and 2025, trailing only the Houston area, according to new .
During the one-year period ending July 1, Collin County鈥檚 population climbed by 3.4% 鈥� an increase of 42,966 residents 鈥� bringing the total to nearly 1.3 million. Harris County gained 48,695 people to top 5 million.
This rapid growth stands in stark contrast to Dallas County, which recorded one of the nation鈥檚 most significant percentage-based population declines.
While major hubs like Plano, McKinney, Frisco, and Allen remain significant, the most explosive growth occurred in smaller suburbs. Princeton was named the nation鈥檚 city, with a population surge of just over 30% from 2023 to 2024.
Future outlooks from the suggest this trend will continue. Projections indicate Collin County will reach 1.4 million residents by 2030 and could soar to 2.2 million by 2050.
Alexsis Jones is a reporter and producer for 四虎影院. Got a tip? Email Alexsis at ajones@kera.org.
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