Idaho local data guide

Boise, Idaho Population by Age

As of 2026, the median age in Boise City, Idaho, is 38.6 years. The population reflects a diverse age distribution, with adults aged 18 to 64 making up the majority of the demographic, complemented by significant portions of children and senior residents.

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

The short answer

The population of Boise City is characterized by a median age of 38.6 years, with a slightly higher median age for females (39.7 years) compared to males (37.6 years). This demographic balance supports a city with a robust workforce and a stable, multi-generational community.

Key facts

Median Age (2026)
38.6 years
Median Age by Gender (2026)
37.6 years (Males) / 39.7 years (Females)

Age Distribution Overview

Boise's population is relatively evenly spread across various life stages. The largest demographic segment consists of adults aged 18 to 64, which is typical for a major state capital and economic hub. While specific city-level percentages for all cohorts fluctuate, regional data for the Boise metropolitan area often serves as a helpful benchmark for planning and demographic analysis.

Youth and Senior Demographics

The city maintains a significant population of younger residents and families, with children under 18 representing a substantial share of the population. Simultaneously, the senior population (age 65 and older) comprises a steady portion of the community. In the broader Boise City metropolitan area, residents 65+ account for approximately 16.9%, while those under 18 account for about 22.6%, based on recent census-derived estimates.

Geographic Considerations

It is important for those relocating or planning to distinguish between the 'Boise City' municipality and the 'Boise City' Metropolitan Statistical Area (MSA). The city proper has a population of approximately 238,853, while the surrounding metropolitan area, which includes several growing suburbs like Meridian and Nampa, encompasses a much larger regional population nearing 850,000. Age data can differ significantly between these boundaries due to the varying housing and lifestyle appeals of urban versus suburban environments.

Common questions

Does Boise have a younger or older population compared to the rest of Idaho?

Boise's median age is generally competitive with state averages; however, more rural counties in Idaho often exhibit significantly higher median ages. Boise tends to attract a younger demographic due to its job market and educational institutions.

How current is the information in Boise, Idaho Population by Age?

This guide is reviewed against current authoritative sources. Confirm time-sensitive details directly with the cited source before making a housing, financial, or relocation decision.

Related Idaho questions

  • What is the current population of Boise, Idaho?
  • How does Boise's median age compare to the rest of Idaho?
  • What are the primary age demographics in Ada County?

Sources and verification