In 1960, Colleyville was the 663rd largest city in Texas at 100 people. Then, Dallas/Fort Worth happened, and in 2020, the population was 26,707. I know this because I created myself an assignment to order Texas cities by size, using the 1960 census, and completed the task the summer after my third grade. I never could throw this one away! Childress was the 150th largest city in Texas at 6,399 ...