Population & age
- Total population
- 1,484
- Median age
- 47.0
Boise County · Boise City, ID · Population 1,484
Idaho City, ID (ZIP 83631) sits in Boise County within the Boise City metro area. The page draws on 2 federal data feeds retrieved Apr 27. Top health signal: High Blood Pressure comes in above the national average at 38.0%. NCES lists 2 schools serving the area, 2 non-charter. 7 colleges and universities serve the area, with median in-state tuition of $37,845. IRS data shows average household income (AGI) of $67,937, well above the ~$45K national average per return. Local establishments report average pay of $22,681 per worker (Census ZBP) — below the US average. BLS QCEW reports average annual pay of $40,427 per worker, roughly 38% below the US average. FEMA has issued 7 federal disaster declarations affecting this ZIP since 1964. County Health Rankings reports 11,447 years of potential life lost per 100,000 (2025) — well above the national county median. Per USDA's Food Environment Atlas, 47.5% of residents in this county live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket — a deep food-access gap. New residents arriving here predominantly come from Ada County, ID (IRS SOI Migration, 2022-2023). Healthcare access is the area's quieter strength; school options sit on the lighter side, so families may find themselves looking at districts a few ZIPs over. Notable: median household income $56,765, fair market rent of $1,660 for a two-bedroom, and a typical home value of $404,803, up 1.9% over the past year. Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
Studio
$1,170
/month
1 Bed
$1,390
/month
2 Bed
$1,660
/month
3 Bed
$2,320
/month
4 Bed
$2,780
/month
HUD Fair Market Rents represent the 40th percentile of standard-quality rental housing in this area. FY2026 data.
$404,803
Zillow Home Value Index (ZHVI) · as of March 2026
+1.9%
vs. March 2025
+27.5%
vs. March 2021
Boise City, ID
Metropolitan statistical area
Source: Zillow Research, ZHVI All Homes (SFR, Condo/Co-op) Time Series (zillow.com/research/data). Zillow Home Value Index (ZHVI) is copyrighted by Zillow, Inc.
New housing units permitted
82
Across 82 permitted buildings. Total construction value: $38.0M.
Single-family
82
100% of total units
Multifamily (2+ unit)
0
0% of total units
Single-family value
$38.0M
construction value
Multifamily value
$0
construction value
Based on county-level data (2024).
Source: U.S. Census Bureau Building Permits Survey (census.gov/construction/bps). Public domain. BPS reports annual residential building permits from local permit-issuing jurisdictions, aggregated to county. A permit reflects intent to build, not a completed unit — actual construction lags by 6-24 months for multifamily projects.
Tax returns filed
600
Average AGI
$67,937
Avg property tax
$78
EITC participation
15.0%
Income distribution
Avg mortgage interest
$362
Avg charitable contribution
—
Avg capital gains
$2,547
Avg total income tax
—
Source: IRS Statistics of Income — Individual Income Tax Statistics by ZIP Code (irs.gov). Public domain. Dollar columns reported in thousands by the IRS; figures here display real dollars. Total ZCTA AGI for the area was $40.8M across all reported brackets.
Business establishments
32
Total employment
163
Annual payroll
$3.7M
Average annual pay
$22,681
Source: U.S. Census Bureau, ZIP Business Patterns (census.gov). Public domain. ZBP covers establishments with paid employees; Census suppresses employment and payroll values when fewer employers operate in a ZIP than would protect their confidentiality.
Average annual pay
$40,427
Average weekly wage
$777
Total employment
1,782
Total establishments
267
That is roughly 38% below the US national average of $65,470 per worker.
Source: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (bls.gov/cew). Public domain. QCEW is derived from state unemployment-insurance filings and covers ~95% of US jobs. Figures are county-level totals assigned to ZIPs whose primary county matches; small-employer cells are suppressed by BLS to protect employer confidentiality.
Unemployment rate
4.6%
That is 0.6 percentage points above the US national unemployment rate of about 4.0%.
Labor force
4,132
Employed
3,941
Unemployed
191
Based on Boise County, ID data (2024).
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics (bls.gov/lau). Public domain. LAUS publishes monthly and annual labor-force estimates for every US county. Figures are county-level totals assigned to ZIPs whose primary county matches.
Public-library outlets
2
Multiple library outlets
Several public-library outlets within the ZIP, giving residents real choice in branch hours, programming, and walk-in distance.
Buildings
1
1 central
Avg hours / week
21.2
across outlets in this ZIP
Avg square feet
6,515
per outlet
Outlets in this ZIP
Includes 1 bookmobile — service location varies; check the system's schedule.
Public libraries provide free WiFi, computer access, children's programming, job-seeking resources, and meeting space — community infrastructure beyond books. FY2023 outlet inventory from the federal Public Libraries Survey.
Source: Institute of Museum and Library Services (imls.gov). Per-ZIP counts of active public-library outlets — central buildings, branches, and bookmobiles — operated by federally reporting library systems.
Federally Declared Disasters
7
Date Range
1964–2020
Most Recent Declaration
COVID-19 PANDEMIC
Biological — declared April 9, 2020 (DR-4534)
Incident period: January 20, 2020 – May 11, 2023
Top Incident Types
Individual Assistance
3
Direct help to disaster survivors
Households Program
1
Housing & temporary lodging support
Public Assistance
6
Repair of public facilities & roads
Hazard Mitigation
1
Funding to reduce future disaster risk
FEMA declares disasters at the county level; counts here include every federally declared disaster touching any county that overlaps this ZIP. Statewide declarations and pre-1964 records without county granularity are excluded. Program flags reflect which FEMA assistance categories were activated (Individual Assistance, Households, Public Assistance, Hazard Mitigation). Source: fema.gov/openfema. Public domain.
30-year averages (1991-2020) from the nearest GHCN-D weather station. Temperature and precipitation values reflect typical annual conditions, not any single year.
Avg. temperature
46.8°F
32.6° – 60.9°
Annual precipitation
26.6"
Annual snowfall
69.4"
Heating · cooling days
6,912.6 · 291.9
Annual base 65°F
Nearest station: GARDEN VALLEY, ID US, 17.7 miles from the centroid of Idaho City, ID (ZIP 83631)
Source: NOAA National Centers for Environmental Information, 1991–2020 U.S. Climate Normals (ncei.noaa.gov). Public domain.
Median daily AQI
48
GoodPeak AQI (2024)
265
Very Unhealthy
Primary pollutant
PM2.5
366 days as main pollutant
Days measured
366
Based on Boise County data (2024).
Source: U.S. Environmental Protection Agency, Air Quality System (epa.gov). Public domain. Only counties with EPA AQS monitoring stations appear here (~30% of US counties); rural ZIPs whose primary county has no monitor will not show this section.
Years of potential life lost (per 100K)
11,447
That is roughly 3,247 years per 100,000 above the national county median (~8,200).
Premature death is the headline composite outcome CHR reports — age-adjusted, all-cause, before age 75.
Fair or poor health
15%
of adults self-report
Poor physical health days
3.9
avg per adult per month
Poor mental health days
4.9
avg per adult per month
Uninsured
9.5%
of residents under 65
Primary care MDs
12
per 100,000 residents
Preventable hospital stays
895
per 100K Medicare enrollees
Food environment (0-10)
7.7
10 = best access & security
Exercise access
82%
residents near a facility
Flu vaccinated
37%
of Medicare enrollees
Low birth weight (under 2,500 g) accounts for 7.4% of live births in this county — an early-life health input that downstream outcomes track against.
Based on Boise data (2025 CHR release).
Source: County Health Rankings & Roadmaps, University of Wisconsin Population Health Institute (countyhealthrankings.org). Annual release. Underlying source datasets vary by measure (CDC BRFSS, NCHS Vital Statistics, AHA, USDA Food Environment Atlas, and others). Figures are county-level and assigned to every ZIP whose primary county matches.
Food access status
Limited food access for many residents
47.5% of Boise County, ID residents live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket.
Grocery stores
—
per 1,000 residents
Supercenters & clubs
—
per 1,000 residents
SNAP-authorized stores
0.90
accepting food benefits
Fast-food restaurants
—
per 1,000 residents
Among low-income residents, 13.8% are low-access — those without a supermarket within 1 mile (urban) or 10 miles (rural).
Per-1,000 figures show how many of each store type exist in Boise County, ID for every 1,000 residents. Higher grocery and supercenter density usually means easier access to fresh food; higher convenience-store-only density (with low grocery rate) often signals a food swamp.
Source: USDA Economic Research Service, Food Environment Atlas (ers.usda.gov). County-level metrics fanned to ZIP via the primary county in the Census ZCTA-county relationship file. Variable years differ per family (stores ~2020, low-access ~2019).
FBI publishes crime data at the county level. Numbers below cover the primary county that contains this ZIP. Rates are per 100,000 residents in the area covered by reporting agencies.
Violent crime rate
—
per 100K residents · 22 reports
Property crime rate
—
per 100K residents · 13 reports
Homicide
0
Robbery
0
Burglary
8
Vehicle theft
0
County-level data for Boise (2024)
Source: U.S. Federal Bureau of Investigation, Uniform Crime Reporting Program (cde.ucr.cjis.gov). Public domain. Coverage varies by reporting agency; areas with partial agency coverage may understate true crime totals.
Net migration (2022-2023)
▲+37 people
+1 household • +$17.8M net AGI flow
Moved in
476households
872 people • $47.2M AGI
Moved out
475households
835 people • $29.4M AGI
Where new residents came from
Where departing residents went
Incoming households reported an average AGI of $99,231 versus departing households' $61,924.
Source: U.S. Internal Revenue Service, Statistics of Income, Migration Data (irs.gov). Public domain. Migration is measured by year-over-year changes in the address on individual tax returns; figures are county-level totals attributed to ZIPs whose primary county matches. Foreign migration contributes to inflow/outflow totals but does not appear in the top-county lists. Small flows are suppressed by IRS to protect taxpayer confidentiality.
State-level rules that apply to every resident of ZIP 83631. Numbers reflect the most recent published year per source.
Income tax
Yes
graduated
Sales tax (combined)
6.03%
State 6.00% · avg local 0.03%
Property tax (effective)
0.53%
Median $1,316/year
Tax burden rank
19 of 50
9.50% of personal income
For ZIP 83631: Applied to this ZIP's typical home value of $404,803, that works out to roughly $2,128/year in property tax.
Program
No program
No program
SNAP eligibility
130% FPL
Federal 130% FPL gross income limit. Asset limit $5,000.
Sources: Tax Foundation (state tax rates & brackets), Bipartisan Policy Center (paid family leave), USDA FNS (SNAP categorical eligibility).
Nearby ZIPs by distance
83666 (Placerville, 11.1 mi) · 83622 (Garden Valley, 15.9 mi) · 83629 (Horseshoe Bend, 17.7 mi) · 83602 (Banks, 23.2 mi) · 83702 (Boise City, 23.8 mi) · 83712 (Boise City, 24.3 mi)
Compare ZIP-level stats — population, schools, housing, climate — across nearby areas. Source: U.S. Census Bureau ZCTA basemap.
All data on this page is sourced from federal government datasets · Not AI-generated · Methodology
Crude prevalence estimates from CDC PLACES, derived from BRFSS small-area modeling. Population-level figures only.
33.4%
Tracks close to the 33.0% national rate.
38.0%
6.0pp above the 32.0% national rate.
22.5%
Tracks close to the 22.0% national rate.
77.2%
Tracks close to the 76.0% national rate.
8.1%
4.9pp below the 13.0% national rate.
12.3%
Tracks close to the 11.0% national rate.
2 schools serve this ZIP, including 2 non-charter.
| School | Type | Grades | Enrollment |
|---|---|---|---|
| BASIN ELEMENTARY SCHOOL | Public | -1–6 | 178 |
| IDAHO CITY HIGH SCHOOL | Public | 7–12 | 160 |
Schools listed from NCES Common Core of Data via the Urban Institute Education Data Portal.
Fresh.NCES CCD via Urban Institute EDP · Apr 27, 2026Colleges in this area
7
Median in-state tuition
$37,845
Median earnings (10 yr)
$37,096
Nampa, ID · 83687
Caldwell, ID · 83605
Nampa, ID · 83686
Nampa, ID · 83687
Nampa, ID · 83686
Meridian, ID · 83642
Meridian, ID · 83642
Source: U.S. Department of Education College Scorecard (collegescorecard.ed.gov). Public domain data. Earnings figures reflect median earnings 10 years after entry for federally-aided students.
Idaho City, ID (ZIP 83631) sits in Boise County within the Boise City metro area. The page draws on 2 federal data feeds retrieved Apr 27. Top health signal: High Blood Pressure comes in above the national average at 38.0%. NCES lists 2 schools serving the area, 2 non-charter. 7 colleges and universities serve the area, with median in-state tuition of $37,845. IRS data shows average household income (AGI) of $67,937, well above the ~$45K national average per return. Local establishments report average pay of $22,681 per worker (Census ZBP) — below the US average. BLS QCEW reports average annual pay of $40,427 per worker, roughly 38% below the US average. FEMA has issued 7 federal disaster declarations affecting this ZIP since 1964. County Health Rankings reports 11,447 years of potential life lost per 100,000 (2025) — well above the national county median. Per USDA's Food Environment Atlas, 47.5% of residents in this county live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket — a deep food-access gap. New residents arriving here predominantly come from Ada County, ID (IRS SOI Migration, 2022-2023). Healthcare access is the area's quieter strength; school options sit on the lighter side, so families may find themselves looking at districts a few ZIPs over. Notable: median household income $56,765, fair market rent of $1,660 for a two-bedroom, and a typical home value of $404,803, up 1.9% over the past year. Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
The two domains pull in different directions. Healthcare access reads strong, but the on-paper school count is on the lighter side — that’s less a quality signal and more a density one. Households here often look at districts a few ZIPs over for school choice while keeping their providers local.
One concrete reading worth keeping: Depression prevalence sits near the national rate at 22.5%. Each figure on this page links to the original federal dataset with its retrieval date — this synthesis is a reading, not a substitute for the underlying records.
33.4%, which is 0.4 percentage points above the national average of 33.0% (CDC PLACES, retrieved Apr 24, 2026).
22.5%, which is 0.5 percentage points above the national average of 22.0% (CDC PLACES, retrieved Apr 24, 2026).
38.0%, which is 6.0 percentage points above the national average of 32.0% (CDC PLACES, retrieved Apr 24, 2026).
2 schools serve this ZIP, including 2 public schools (NCES CCD, retrieved Apr 27, 2026). No charter schools are listed in this ZIP by NCES CCD.
No charter schools are listed in ZIP 83631 by NCES CCD (retrieved Apr 27, 2026).
Yes, 1 high school serves this ZIP: Idaho City High School. (NCES CCD, retrieved Apr 27, 2026).
1,484 people live in ZIP 83631, with a median age of 47.0 (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
$56,765 per year (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
In ZIP 83631, 80.2% of occupied housing units are owner-occupied and 19.8% are renter-occupied (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
In ZIP 83631, 30.0% of workers work from home. Public transit is used by 0.0% of commuters (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
3.6% of the population in ZIP 83631 lives below the federal poverty line (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
75.4% of households in ZIP 83631 have broadband internet access (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
The typical home value in ZIP 83631 is $404,803, up 1.9% from a year ago (Zillow Home Value Index, retrieved May 1, 2026).
Home values are up 1.9% over the past year and up 27.5% over the past five years (Zillow Home Value Index, retrieved May 1, 2026).
The average Adjusted Gross Income reported on tax returns from ZIP 83631 (Idaho City, ID) is $67,937 per return (IRS SOI Tax Year 2022, retrieved May 2, 2026).
Tax returns from ZIP 83631 report an average of $78 per return in real-estate tax deductions (IRS SOI Tax Year 2022, retrieved May 2, 2026).
5.0% of tax returns from ZIP 83631 (Idaho City, ID) report Adjusted Gross Income of $200,000 or more (IRS SOI Tax Year 2022, retrieved May 2, 2026).
As of 2022, 32 business establishments operated in ZIP 83631 employing 163 workers (Census ZIP Business Patterns, retrieved May 3, 2026).
The average annual pay across all local establishments in ZIP 83631 is $22,681, based on Census ZIP Business Patterns 2022 data (retrieved May 3, 2026).
According to the CDC Social Vulnerability Index (2022), ZIP 83631 ranks in the 45th percentile nationally for social vulnerability — a moderate vulnerability profile (retrieved May 3, 2026).
Housing Type & Transportation is the highest-scoring CDC SVI theme for ZIP 83631, ranking in the 54th percentile nationally (CDC/ATSDR Social Vulnerability Index 2022, retrieved May 3, 2026).
FEMA has recorded 7 federal disaster declarations affecting ZIP 83631 between 1964–2020 (FEMA OpenFEMA Disaster Declarations, retrieved May 3, 2026).
Biological is the most common federally declared disaster type affecting ZIP 83631, accounting for 2 of 7 declarations (29%, FEMA OpenFEMA, retrieved May 3, 2026).
The most recent FEMA disaster declaration affecting ZIP 83631 was "COVID-19 PANDEMIC" — a biological declared in 2020 (DR-4534) (FEMA OpenFEMA, retrieved May 3, 2026).
7 colleges and universities are listed near ZIP 83631 by the U.S. Department of Education College Scorecard, including College Of Western Idaho, The College Of Idaho, and Northwest Nazarene University (retrieved May 2, 2026).
Median in-state tuition across 7 nearby institutions is $37,845 (College Scorecard, retrieved May 2, 2026).
Graduates of nearby colleges earn a median of $37,096 ten years after entry (College Scorecard, retrieved May 2, 2026).
ZIP 83631 has an average annual temperature of 46.8°F and 26.6" of annual precipitation based on the GARDEN VALLEY, ID US weather station 17.7 miles from the ZIP centroid (NOAA 1991–2020 Climate Normals, retrieved May 8, 2026).
Idaho has a graduated income tax with a top rate of unspecified. Combined sales tax: 6.03% (Tax Foundation 2025).
Idaho has no state paid family leave program (Bipartisan Policy Center 2026).
This page covers health outcomes from CDC PLACES (40 metrics), school information from NCES CCD (2 schools), demographics from the Census ACS 5-Year (2022), home values from the Zillow Home Value Index, colleges from the U.S. Department of Education College Scorecard (7 institutions), income & tax statistics from the IRS SOI (Tax Year 2022), local business & employment from Census ZIP Business Patterns (2022), social vulnerability scores from the CDC/ATSDR SVI (2022), federal disaster declarations from FEMA OpenFEMA (7 on record), climate normals from NOAA NCEI (1991-2020), county-level crime data from the FBI Crime Data Explorer (2024), and state-level tax rates from the Tax Foundation. Data is refreshed on Mubboo's standard schedule.
Health data retrieved Apr 24, 2026 from CDC PLACES. School data retrieved Apr 27, 2026 from NCES CCD. Demographics retrieved Apr 30, 2026 from Census ACS 5-Year (2022). Home values retrieved May 1, 2026 from Zillow Research. College data retrieved May 2, 2026 from U.S. Dept of Education College Scorecard. Income & tax statistics retrieved May 2, 2026 from IRS SOI (Tax Year 2022). Business & employment retrieved May 3, 2026 from Census ZBP (2022). Social vulnerability scores retrieved May 3, 2026 from CDC/ATSDR SVI (2022). Federal disaster declarations retrieved May 3, 2026 from FEMA OpenFEMA (7 on record). Climate normals retrieved May 8, 2026 from NOAA NCEI (1991-2020). County-level crime data retrieved May 4, 2026 from the FBI Crime Data Explorer (2024). State-level tax rates retrieved 2026-05-05 15:58:22.284+00 from the Tax Foundation.
Nearby ZIPs by distance
83666 (Placerville, 11.1 mi) · 83622 (Garden Valley, 15.9 mi) · 83629 (Horseshoe Bend, 17.7 mi) · 83602 (Banks, 23.2 mi) · 83702 (Boise City, 23.8 mi) · 83712 (Boise City, 24.3 mi)
Compare ZIP-level stats — population, schools, housing, climate — across nearby areas. Source: U.S. Census Bureau ZCTA basemap.
Have a specific question about ZIP 83631?
Ask Mubboo — launching Q4 2026.
Data refreshed via Mubboo's ETL pipeline; oldest source on this page retrieved Apr 24, 2026.
Social Vulnerability Index
Overall SVI
45th percentile
Moderate Vulnerability
Based on 1 census tract, population 1,102
Vulnerability Themes
Households Without Vehicle
3
Limited English Speakers
6
Persons with Disability
152
Without HS Diploma
50
Without Health Insurance
144
Adults Age 65+
309
The Social Vulnerability Index uses U.S. Census data to identify communities most at risk during public health emergencies and natural disasters. Higher percentiles indicate greater vulnerability. Tract-level scores are aggregated to this ZCTA via Census 2020 ZCTA→Tract crosswalk, weighted by land-area share. Source: atsdr.cdc.gov. Public domain.