Resident Population in Latah County, ID was 42.18000 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Latah County, ID reached a record high of 42.18000 in January of 2024 and a record low of 24.89800 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Latah County, ID - last updated from the United States Federal Reserve on April of 2026.