Resident Population in Lincoln County, CO was 5.48000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Lincoln County, CO reached a record high of 6.09700 in January of 1999 and a record low of 4.51900 in January of 1983. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lincoln County, CO - last updated from the United States Federal Reserve on May of 2024.