Resident Population in Boulder, CO (MSA) was 330.26200 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Boulder, CO (MSA) reached a record high of 330.95300 in January of 2020 and a record low of 271.66900 in January of 2000. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Boulder, CO (MSA) - last updated from the United States Federal Reserve on September of 2025.