Resident Population in Humboldt County, CA was 132.38000 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Humboldt County, CA reached a record high of 136.71000 in January of 2017 and a record low of 99.69200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Humboldt County, CA - last updated from the United States Federal Reserve on April of 2026.