Resident Population in Boise City, ID (MSA) was 864.24300 Thous. of Persons in January of 2025, according to the United States Federal Reserve. Historically, Resident Population in Boise City, ID (MSA) reached a record high of 864.24300 in January of 2025 and a record low of 468.87400 in January of 2000. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Boise City, ID (MSA) - last updated from the United States Federal Reserve on April of 2026.