Idaho local data guide

Boise, Idaho Population 2025

As of July 1, 2025, the estimated population of Boise, Idaho, was 238,429, according to U.S. Census Bureau data. The city remains the most populous in Idaho, experiencing modest growth in the mid-2020s amidst the broader expansion of the Treasure Valley region.

Updated with grounded research as of 2026-07-21.

The short answer

The population of Boise City, Idaho, reached an estimated 238,429 residents as of July 1, 2025. While the city continues to serve as the economic and cultural hub of the state, its recent growth has transitioned toward a more moderate pace, recording a 1.1% cumulative increase between 2020 and 2025. This steady trend reflects a cooling in the rapid expansion patterns previously observed in the Treasure Valley.

Key facts

Boise City Population (July 1, 2025)
238,429
Growth Rate (2020–2025)
1.1% (cumulative)

Understanding City Limits vs. Regional Geography

It is important to distinguish between the population of Boise City and the greater Boise Metropolitan Statistical Area (MSA). The figure of 238,429 refers strictly to the incorporated boundaries of Boise City. Residents or planners looking at the broader 'Treasure Valley' footprint should be aware that the metropolitan region includes surrounding cities like Meridian, Nampa, and Caldwell, which often report distinct growth trajectories.

Recent Population Trends

Following years of accelerated growth, Boise’s population trend has shifted toward stability. The 1.1% cumulative growth rate from 2020 through mid-2025 indicates that while the city remains a destination for new residents, the velocity of that influx has moderated. This trend is a key metric for those analyzing local housing demand and infrastructure utilization.

Planning and Data Limitations

Population metrics can vary depending on the data source and methodology. While the U.S. Census Bureau provides official estimates, local planning agencies—such as the Community Planning Association of Southwest Idaho (COMPASS)—may utilize different datasets for regional infrastructure and transportation planning. Stakeholders should verify which dataset aligns with their specific project requirements.

Common questions

Does the 238,429 figure include the entire Treasure Valley?

No. This figure is specific to the incorporated city limits of Boise. The Treasure Valley includes several other municipalities and unincorporated areas in Ada and Canyon counties.

Is Boise still experiencing a population boom?

Boise is experiencing steady, moderate growth rather than a boom. The cumulative growth rate of 1.1% between 2020 and 2025 suggests a deceleration in growth velocity compared to earlier years.

Related Idaho questions

  • What is the projected population growth for the Treasure Valley?
  • How does Boise's population growth compare to other cities in Ada County?
  • What is the current population of the Boise Metropolitan Statistical Area?

Sources and verification