Colorado. Population Population tops 5,000 in 33 cities of state. Post Nov. 17, 1960 p.21 PMN Nov. 1'7, 1960 p.5 State's small town populations of 1960 listed. Post Nov. 1$, 1960 p.17 Population shows 42$,85$ gain in 1960. Post Dec. 1, 1960 p.55 2 nd congressional district - 19 northeast Colorado Counties - increase quarter million population in 10 yrs, Post Feb 3, 1961 p.1 List of towns with smallest population. RMN Feb 26, 1961 p.5 0