Resident Population in Pike County, MO was 17.93500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Pike County, MO reached a record high of 18.67100 in January of 2005 and a record low of 15.94700 in January of 1989. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Pike County, MO - last updated from the United States Federal Reserve on May of 2024.