Colorado. Census Census men reach isolated Colorado areas by snow plane. Post Feb. 15, 1940 p.30 Colorado's population is 1,118,818 net gain of slightly more than 8,%. Increases show by 36 counties. Past Aug. 4, 1940 p.1 sec-1 Census to give value of state export trade. Post Feb. 3, 1940 p.2 Nine Colorado cities show gain in census RMN April 24, 1940 p.7 Population gains by counties in 1940 census. Post Dec. 19, 1940 p.6