Resident Population in Indian River County, FL was 172.13900 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Indian River County, FL reached a record high of 172.13900 in January of 2024 and a record low of 35.99200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Indian River County, FL - last updated from the United States Federal Reserve on April of 2026.