Boise City is a upper-middle-income mid-sized city of 237,242.
There is a particular kind of American city that grew faster than anyone quite planned for, and Boise is one of the more instructive examples of the type. It arrived at a population of 237,242, according to Census ACS 5-Year 2024 data, by a route that involved decades of quiet expansion followed by a period of considerably less quiet expansion, and the city now finds itself in the position of being large enough to have real urban complexity while still being small enough that people occasionally seem surprised by this fact.
Population and Demographics
The Census ACS 5-Year 2024 estimates place Boise's total population at 237,242, distributed across 99,616 households, of which 57,844 are family households. The median age is 38.6 years, and children under 18 account for 18.5 percent of residents, a figure that gives the city what the derived Census data characterizes as a family-oriented character. The 18-to-34 cohort numbers approximately 62,000 people, which is a substantial share of the population and reflects the city's role as a regional hub for employment and higher education.
On the question of racial and ethnic composition, Census ACS data shows a white population of 197,150, a Hispanic or Latino population of 22,472, an Asian population of 7,887, and a Black population of 3,197, among other groups.
Housing and Affordability
Housing affordability in Boise sits in a range that economists would describe as strained, and that residents would likely describe in more direct terms. According to figures derived from Census income, housing, and poverty data, the home-price-to-income ratio stands at 5.8, a level the source classifies as expensive. The general threshold at which housing is considered affordable is a ratio of around 3.0, so 5.8 represents a meaningful gap between what homes cost and what incomes support.
Rental costs present a somewhat different picture. Rent as a percentage of median income is 19.4 percent, which the same derived dataset classifies as affordable, sitting below the conventional 30-percent threshold that signals housing cost burden. The divergence between ownership and rental affordability is itself a data point worth sitting with: it suggests a city where renting remains manageable but purchasing has moved out of reach for a significant portion of the population.
Climate and Air Quality
Boise's climate data comes from the BOISE AIR TERMINAL station, located approximately 7 miles from the city center. According to NOAA ACIS records, the average annual temperature is 54.2 degrees Fahrenheit and annual precipitation averages 12.8 inches, placing Boise firmly in the semi-arid category. The city receives considerably less rain than most Americans might expect from a Pacific Northwest-adjacent location, a fact that surprises visitors who arrive expecting something greener.
The EPA's AQI Annual Summary for 2024 recorded 366 days of air quality monitoring. Of those, 230 were classified as good days, 101 as moderate, 28 as unhealthy for sensitive groups, 6 as unhealthy, and 1 as very unhealthy. No hazardous days were recorded. The maximum AQI reached 214 during the year. Wildfire smoke, which has become a recurring feature of Western summers, accounts for a meaningful share of the elevated-AQI days, though the EPA data does not disaggregate by cause.
Broadband Access
According to FCC Broadband Data Collection figures as of June 2025, broadband coverage in Boise is essentially complete at the lower speed tiers. The data shows 100 percent of housing units with access to service at 25/3 Mbps, 100 percent at 100/20 Mbps, and 100 percent at 250/25 Mbps. Coverage at the 1,000/100 Mbps tier reaches approximately 29 percent of the city's 119,684 total housing units. The gap between near-universal mid-tier coverage and more limited gigabit availability is a pattern common to mid-sized American cities and reflects infrastructure investment decisions made over the preceding decade.
Education and Civic Infrastructure
NCES IPEDS 2022 data identifies one college within approximately 3 miles of the city center. The College Scorecard API query, as of April 2026, returned no results for Boise City, which may reflect a data matching issue rather than an absence of institutions, given the IPEDS finding.
The IRS Exempt Organizations Business Master File identifies 196 churches operating in Boise, along with the Greater Boise Chamber of Commerce as a registered civic organization. The chamber's presence in the IRS EO BMF reflects its status as a recognized nonprofit civic entity. No animal shelters matched directly to Boise City in the IRS BMF under NTEE D codes, though the county aggregate records 6 childcare centers.
Municipal Governance and Zoning
Boise City maintains a municipal code accessible through Municode at https://library.municode.com/id/boise-city-city-idaho. The city's zoning framework governs land use across a range of residential, commercial, and industrial classifications, and like most Idaho municipalities, it operates within the broader context of state law.
Idaho Code § 54-1236 is worth noting in the context of professional licensing: it establishes that only the state Board of Licensure of Professional Engineers and Professional Land Surveyors may issue licenses to engineers and surveyors practicing in Idaho, and explicitly prohibits local jurisdictions from requiring additional licensure or fees. This provision, drawn from Idaho's Title 54 governing professions, vocations, and businesses, means that Boise City cannot impose its own engineering licensure requirements on top of the state's — a constraint that shapes how the city administers building and development review.
Financial Institutions
The FDIC branch data includes several banking institutions operating within Boise, among them Banner Bank's Boise 10th & Bannock Branch at 950 W Bannock Street and First Interstate Bank's Meridian Silverstone Branch, along with additional institutions reflected in the broader dataset. The presence of multiple regional and national bank branches is consistent with Boise's role as the commercial center of the Treasure Valley.
A Note on Data Completeness
Several data fields returned documented absences rather than counts. Cannabis dispensaries, civic service organizations, and arts organizations all returned no matched data under the methodologies used. The attractions query, which searched OpenStreetMap's Overpass API for theme parks, zoos, aquariums, and museums within 25 miles, returned zero results — a finding that seems likely to reflect the specific categories queried rather than the actual cultural landscape of a city of this size.
Every number on this page comes from federal public data and is traceable to its source.
Further Reading
- U.S. Census Bureau, American Community Survey 5-Year Estimates — https://data.census.gov
- National Center for Education Statistics, Common Core of Data 2022 — https://nces.ed.gov/ccd/
- FEMA, Disaster Declarations — https://www.fema.gov/disaster/declarations