Resident Population in Cochise County, AZ was 125.77300 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Cochise County, AZ reached a record high of 133.12400 in January of 2011 and a record low of 61.91800 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cochise County, AZ - last updated from the United States Federal Reserve on April of 2026.