Postal Codes

83631 ZIP Code

Advertisement

English Español

ZIP code 83631 covers Idaho City, Idaho, with a population of about 1,737 and a median household income of $80,968.

Population
1,73710 per square mile
Median age
44.35.6 points above the US average
Median household income
$80,9681.1× the Idaho median
Poverty rate
3.3%9.1 points below the US average
Typical home value
$416,175up 13.3% in five years
Median rent
$77633% below the Idaho median
Degree or higher
26.1%8.9 points below the US average
Homeownership
81.9%16.9 points above the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
32

Where 83631 is

Idaho City, Idaho — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population1,737
Median age44.3
Family households83.1%
Born outside the US3.4%
Speaks a language other than English at home2.9%
White (non-Hispanic)76.3%
Black (non-Hispanic)0.1%
Asian (non-Hispanic)0.7%
Hispanic or Latino6.3%
Veterans10.8%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$80,968
Income per person$32,047
Poverty rate3.3%
Households on SNAP or cash assistance17.6%

Household income distribution

Under $10k0.8%
$10–15k0.6%
$15–20k2.5%
$20–25k0.7%
$25–30k2.7%
$30–35k0.7%
$35–40k15.3%
$40–45k1.3%
$45–50k3.8%
$50–60k9.4%
$60–75k9.0%
$75–100k21.6%
$100–125k16.4%
$125–150k3.8%
$150–200k11.6%
$200k or more0.0%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed600
Mean adjusted gross income$67,937
Returns declaring $200,000 or more5%
Returns, under $25k28.3%
Returns, $25k–$50k23.3%
Returns, $50k–$75k16.7%
Returns, $75k–$100k10.0%
Returns, $100k–$200k16.7%
Returns, $200k or more5.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$373,500
Median gross rent$776
Rent as a share of household income27.7%
Owner-occupied81.9%
Vacant homes36%
Median year built1983

What the homes are

Detached house77.8%
2 to 4 units1.2%
5 to 19 units0.2%
Mobile home20.2%
Boat, RV or van0.6%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$416,175as of 2026-07
Typical home value, 1 yearup 4.2%
Typical home value, 5 yearsup 13.3%
Typical home value, 10 yearsup 153.1%
Typical home value since 2000
200920172026$431,614$107,545

$125,398 in 2009 to $416,175 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate5.9%
Bachelor's degree or higher26.1%
High school diploma or higher97.6%
Works from home29.3%
Drives to work alone52.7%
Takes public transport0%
Commutes 45 minutes or more35.3%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity33.4% same as the national average of 33.4%
Diagnosed diabetes12.3% same as the national average of 12%
Currently smokes13.3% same as the national average of 13.2%
High blood pressure38% 3.9 pts above the national average of 34.1%
Fair or poor general health19% 1.3 pts below the national average of 20.3%
No health insurance (18–64)8.1% 3.2 pts below the national average of 11.3%
Depression22.5% 0.6 pts above the national average of 21.9%
No leisure-time physical activity23.7% 1.7 pts below the national average of 25.4%
Arthritis33.8% 8.7 pts above the national average of 25.1%
Binge drinking13.6% 2.4 pts below the national average of 16%
Taking blood pressure medication75.5% 0.8 pts above the national average of 74.7%
Cancer (non-skin)10.8% 3.1 pts above the national average of 7.7%
Current asthma11.2% 0.8 pts above the national average of 10.4%
Coronary heart disease8% 1.8 pts above the national average of 6.2%
Routine check-up in past year77.2% 0.5 pts above the national average of 76.7%
Cholesterol screening85.7% same as the national average of 85.9%
Cognitive disability15% same as the national average of 14.8%
Colorectal screening65.3% 1 pts above the national average of 64.3%
COPD8.3% 1.7 pts above the national average of 6.6%
Visited a dentist62.4% 1.1 pts above the national average of 61.3%
Any disability36.6% 5.9 pts above the national average of 30.7%
Lacks emotional support19.9% 4.9 pts below the national average of 24.8%
Food insecurity11.3% 5.8 pts below the national average of 17.1%
Received food stamps7.8% 6.5 pts below the national average of 14.3%
Hearing disability11% 4.3 pts above the national average of 6.7%
High cholesterol38.9% 2.7 pts above the national average of 36.2%
Housing insecurity8.8% 5 pts below the national average of 13.8%
Independent living disability8.3% same as the national average of 8.4%
Lacks transport6.6% 2.6 pts below the national average of 9.2%
Loneliness27.4% 7 pts below the national average of 34.4%
Mammography use62% 13.9 pts below the national average of 75.9%
Poor mental health (14+ days)14.7% 2.1 pts below the national average of 16.8%
Mobility disability17.6% 3.6 pts above the national average of 14%
Poor physical health (14+ days)15.2% 1.7 pts above the national average of 13.5%
Self-care disability4.1% same as the national average of 4%
Utility shut-off threat6% 2.8 pts below the national average of 8.8%
Sleeps under 7 hours32.9% 3.5 pts below the national average of 36.4%
Stroke4.1% 0.7 pts above the national average of 3.4%
All natural teeth lost15.4% 2.4 pts above the national average of 13%
Vision disability5% 0.6 pts below the national average of 5.6%
Advertisement
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments32
People employed163
Annual payroll$3,697,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 98.4% of US census tracts
FEMA ratingVery High
Expected annual loss98.3 out of 100
Community resilience9.6 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Wildfire99.8Very High at its worst in this ZIP code
Landslide99.6Relatively High at its worst in this ZIP code
River flooding96.7Very High at its worst in this ZIP code
Winter weather96.7Very High at its worst in this ZIP code
Strong wind92.1Relatively High at its worst in this ZIP code
Avalanche83.9Relatively Moderate at its worst in this ZIP code
Volcanic activity69Very Low at its worst in this ZIP code
Drought67.8Very Low at its worst in this ZIP code
Earthquake60.6Relatively Low at its worst in this ZIP code
Lightning59Relatively Moderate at its worst in this ZIP code
Ice storm49.1Relatively Low at its worst in this ZIP code
Hail44.9Relatively Low at its worst in this ZIP code
Heat wave25.2Relatively Low at its worst in this ZIP code
Cold wave21.6Relatively Low at its worst in this ZIP code
Tornado16Very Low at its worst in this ZIP code
Compared with Idaho and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPIdahoUnited States
Median household income$80,968$74,636$78,538
Income per person$32,047$37,169$43,289
Poverty rate3.3%10.6%12.4%
Median home value$373,500$376,000$303,400
Median gross rent$776$1,150$1,348
Homeownership81.9%72.4%65%
Bachelor's degree or higher26.1%31.2%35%
Unemployment rate5.9%3.7%5.2%
Works from home29.3%12.2%13.5%
Born outside the US3.4%5.7%13.9%
Median age44.337.138.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationIDAHO CITY, ID US11.1 km away
Rain in a year21 in

Average high and low by month

January35.3°F / 13.5°F3.16 in rain
February40.5°F / 15.9°F1.94 in rain
March47.8°F / 22°F2.26 in rain
April56°F / 27.5°F1.59 in rain
May66.4°F / 34.5°F2.11 in rain
June75.3°F / 40.3°F1.09 in rain
July87.1°F / 45.6°F0.32 in rain
August86.3°F / 43.6°F0.44 in rain
September76.5°F / 35.6°F0.77 in rain
October61.5°F / 27.5°F1.5 in rain
November44.2°F / 20.7°F2.41 in rain
December34.6°F / 13.9°F3.53 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket100% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

Basin School District 72100% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability45more vulnerable than 45% of US census tracts
Socioeconomic status46more vulnerable than 46% of US census tracts
Household characteristics38more vulnerable than 38% of US census tracts
Racial and ethnic minority status29more vulnerable than 29% of US census tracts
Housing type and transport54more vulnerable than 54% of US census tracts
Walkability5.4 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

83666 Placerville, ID23.2 km away
83622 Garden Valley, ID24.9 km away
83637 Lowman, ID29.1 km away
83601 Atlanta, ID36.6 km away
83629 Horseshoe Bend, ID38.1 km away
83602 Banks, ID39.8 km away
83716 Boise, ID44.2 km away
83712 Boise, ID48.2 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Boise County100% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area168.46 sq mi
Water area0.01 sq mi
Population density10 people per sq mi
Latitude, longitude43.8834, -115.7080

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

Advertisement