Idaho local data guide

College-Aged Population and Student Enrollment in Boise

As of late 2026, Boise's population is estimated at 238,853. While there is no single aggregate statistic for the specific "college-aged" demographic (18–24) residing within city limits, Boise State University remains the primary driver of student-aged population in the region, with 28,519 students enrolled as of Fall 2025.

Updated with grounded research as of 2026-10-08.

The short answer

There is no definitive percentage of Boise’s total population that is strictly "college-aged" (18–24), as U.S. Census data requires custom aggregation. However, using Boise State University’s Fall 2025 enrollment of 28,519 students as a proxy, the university’s student body represents approximately 11.9% of the city’s total estimated population of 238,853.

Key facts

Boise City Total Population (2026)
238,853
Boise State University Enrollment (Fall 2025)
28,519

Understanding the Student Demographic

When analyzing Boise's housing and neighborhood dynamics, it is important to distinguish between the 'college-aged' population (a broader Census demographic of 18–24 year-olds) and university enrollment. While the student population influences rental demand and local amenities, not all students live within city limits, and not all 18–24 year-olds are students.

  • Boise State University is the largest higher education institution in the region, significantly impacting the rental market, especially in neighborhoods adjacent to the campus.
  • University enrollment figures include both undergraduate and graduate students, representing a mix of ages and living situations, including those living off-campus and those attending primarily online.

Housing and Planning Implications

For those relocating or planning in Boise, the student population acts as a consistent driver for the rental market. Housing demand remains strong in areas near Boise State University (the South Boise and Lusk District areas) due to the convenience of proximity for students.

Because university enrollment fluctuates annually, long-term housing planning often accounts for both the resident population growth and the cyclical nature of the academic calendar, which can lead to seasonal vacancy changes in high-density student areas.

Data Considerations

Publicly available population data is often released on a lagging schedule. The 2026 population figures are estimates, and university census data is captured at specific points during each term. These numbers provide a snapshot of the region but may not capture transient populations or residents living in unincorporated areas just outside the city boundary.

Common questions

Is the entire student body of Boise State University located within the city of Boise?

No. Boise State University enrollment figures count total students, which includes those living on campus, in off-campus housing throughout the Treasure Valley, and those taking classes entirely online from other locations.

Where can I find specific 18–24 demographic data for Boise?

The most accurate source for specific age-bracket data is the U.S. Census Bureau's American Community Survey (ACS). You can access these datasets via the Census Bureau’s data portal to see the specific 18–24 demographic percentage for Boise city limits.

Related Idaho questions

  • What is the median age in Boise, Idaho?
  • How does student enrollment impact the rental vacancy rate in South Boise?
  • How fast is the Boise metropolitan area population growing?

Sources and verification