Idaho local data guide

Boise, Idaho Population

As of 2024 estimates, the city of Boise has a population of approximately 250,060 residents, while the broader Boise metropolitan area comprises roughly 846,000 people. As the capital of Idaho and the anchor of the Treasure Valley, Boise serves as a primary center for economic, cultural, and residential growth in the region.

Updated with grounded research as of 2026-10-19.

The short answer

Boise has experienced steady growth over the past several years, transitioning from a mid-sized city to the hub of Idaho's most populous metropolitan area. While the city itself remains the largest in the state, the surrounding Treasure Valley region—which includes cities such as Meridian, Nampa, and Caldwell—contributes significantly to the area's overall population count of approximately 846,000 as of 2024.

Key facts

Boise City Population (2024 Estimate)
250,060
Boise Metropolitan Area Population (2024 Estimate)
845,900
Boise City Population (2020 Census)
235,684

City vs. Metropolitan Area

It is important to distinguish between the population of Boise city limits and the Boise metropolitan area. The city proper encompasses the urban core and immediate residential neighborhoods. The metropolitan area, often referred to as the Treasure Valley, includes surrounding suburbs and neighboring cities in Ada and Canyon counties. Relocation and housing planning often focus on the metro area, as many residents live in bedroom communities like Meridian or Nampa while working in or near Boise.

Regional Growth Trends

Boise and the Treasure Valley have been among the fastest-growing regions in the United States over the last decade. This growth is driven by in-migration from other states, particularly from the Pacific Northwest and California, as well as natural population increase. Local planning agencies, such as COMPASS (Community Planning Association of Southwest Idaho), track these changes annually to manage infrastructure development and housing needs.

Data Sources and Methodology

Population figures can vary depending on whether they originate from the decennial U.S. Census or annual local estimates. The U.S. Census Bureau provides the most reliable long-term benchmark, while organizations like COMPASS utilize local data—such as building permits, household sizes, and vacancy rates—to provide more frequent, mid-decade snapshots of regional growth.

Common questions

Is Boise the largest city in Idaho?

Yes, Boise is the most populous city in the state of Idaho and serves as the seat of Ada County.

What is the Treasure Valley?

The Treasure Valley is the regional name for the metropolitan area encompassing the Boise-Nampa corridor. It includes multiple cities and counties in southwestern Idaho and serves as the economic hub of the state.

Related Idaho questions

  • What is the population of Ada County?
  • How fast is the Boise metropolitan area growing?
  • What cities are included in the Treasure Valley?

Sources and verification