Postal Codes

83871 ZIP Code

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ZIP code 83871 covers Troy, Idaho, with a population of about 2,279 and a median household income of $87,148.

Population
2,27920 per square mile
Median age
4910.3 points above the US average
Median household income
$87,1481.2× the Idaho median
Poverty rate
2.5%9.9 points below the US average
Typical home value
$516,044up 32.4% in five years
Median rent
$81429% below the Idaho median
Degree or higher
37%2 points above the US average
Homeownership
89%24 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
41

Where 83871 is

Troy, 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

Population2,279
Median age49
Family households73.7%
Born outside the US0.9%
Speaks a language other than English at home1.8%
White (non-Hispanic)94%
Black (non-Hispanic)0%
Asian (non-Hispanic)0.3%
Hispanic or Latino2.6%
Veterans11.6%
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$87,148
Income per person$41,756
Poverty rate2.5%
Households on SNAP or cash assistance2.1%

Household income distribution

Under $10k3.1%
$10–15k1.9%
$15–20k2.3%
$20–25k0.0%
$25–30k0.0%
$30–35k3.3%
$35–40k2.5%
$40–45k6.5%
$45–50k3.4%
$50–60k6.0%
$60–75k15.3%
$75–100k16.4%
$100–125k15.6%
$125–150k6.6%
$150–200k12.6%
$200k or more4.3%

Income as declared to the IRS

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

Tax returns filed970
Mean adjusted gross income$83,540
Returns declaring $200,000 or more6.2%
Returns, under $25k20.6%
Returns, $25k–$50k19.6%
Returns, $50k–$75k16.5%
Returns, $75k–$100k14.4%
Returns, $100k–$200k22.7%
Returns, $200k or more6.2%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$333,300
Median gross rent$814
Rent as a share of household income18.6%
Owner-occupied89%
Vacant homes9%
Median year built1977

What the homes are

Detached house84%
2 to 4 units1.4%
5 to 19 units2.8%
Mobile home11.6%
Boat, RV or van0.2%
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$516,044as of 2026-07
Typical home value, 1 yearup 2.5%
Typical home value, 5 yearsup 32.4%
Typical home value, 10 yearsup 107.9%
Typical home value since 2000
200920172026$516,044$203,141

$233,593 in 2009 to $516,044 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.2%
Bachelor's degree or higher37%
High school diploma or higher97.8%
Works from home8.8%
Drives to work alone84.8%
Takes public transport0%
Commutes 45 minutes or more30.3%
Health

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

Obesity31% 2.4 pts below the national average of 33.4%
Diagnosed diabetes9.9% 2.1 pts below the national average of 12%
Currently smokes11.2% 2 pts below the national average of 13.2%
High blood pressure35.1% 1 pts above the national average of 34.1%
Fair or poor general health16.2% 4.1 pts below the national average of 20.3%
No health insurance (18–64)7.6% 3.7 pts below the national average of 11.3%
Depression21.6% same as the national average of 21.9%
No leisure-time physical activity19.3% 6.1 pts below the national average of 25.4%
Arthritis30.3% 5.2 pts above the national average of 25.1%
Binge drinking15.6% same as the national average of 16%
Taking blood pressure medication74.7% same as the national average of 74.7%
Cancer (non-skin)10.1% 2.4 pts above the national average of 7.7%
Current asthma10.6% same as the national average of 10.4%
Coronary heart disease6.7% 0.5 pts above the national average of 6.2%
Routine check-up in past year76.3% same as the national average of 76.7%
Cholesterol screening84.7% 1.2 pts below the national average of 85.9%
Cognitive disability13.6% 1.2 pts below the national average of 14.8%
Colorectal screening65.6% 1.3 pts above the national average of 64.3%
COPD6.7% same as the national average of 6.6%
Visited a dentist67.1% 5.8 pts above the national average of 61.3%
Any disability31.3% 0.6 pts above the national average of 30.7%
Lacks emotional support19.7% 5.1 pts below the national average of 24.8%
Food insecurity9.6% 7.5 pts below the national average of 17.1%
Received food stamps6.5% 7.8 pts below the national average of 14.3%
Hearing disability9.3% 2.6 pts above the national average of 6.7%
High cholesterol35% 1.2 pts below the national average of 36.2%
Housing insecurity8.2% 5.6 pts below the national average of 13.8%
Independent living disability7.3% 1.1 pts below the national average of 8.4%
Lacks transport5.8% 3.4 pts below the national average of 9.2%
Loneliness27.3% 7.1 pts below the national average of 34.4%
Mammography use74% 1.9 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 disability14.4% same as the national average of 14%
Poor physical health (14+ days)13.4% same as the national average of 13.5%
Self-care disability3.4% 0.6 pts below the national average of 4%
Utility shut-off threat5.4% 3.4 pts below the national average of 8.8%
Sleeps under 7 hours29.5% 6.9 pts below the national average of 36.4%
Stroke3.4% same as the national average of 3.4%
All natural teeth lost10% 3 pts below the national average of 13%
Vision disability4.1% 1.5 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments41
People employed153
Annual payroll$7,345,000
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 87.2% of US census tracts
FEMA ratingRelatively Moderate to Relatively High across the 2 census tracts this ZIP code covers
Expected annual loss86.2 out of 100
Community resilience33.7 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.

Wildfire99.1Very High at its worst in this ZIP code
Landslide96.4Relatively Moderate at its worst in this ZIP code
River flooding91.1Relatively High at its worst in this ZIP code
Cold wave77.7Relatively High at its worst in this ZIP code
Drought74.8Very Low at its worst in this ZIP code
Hail69.5Relatively Moderate at its worst in this ZIP code
Strong wind63.1Relatively Moderate at its worst in this ZIP code
Heat wave57.1Relatively Moderate at its worst in this ZIP code
Earthquake54.4Relatively Low at its worst in this ZIP code
Avalanche51.6Very Low at its worst in this ZIP code
Winter weather45.9Relatively Low at its worst in this ZIP code
Tornado18.4Very Low at its worst in this ZIP code
Ice storm16.9Very Low at its worst in this ZIP code
Lightning16.9Very 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$87,148$74,636$78,538
Income per person$41,756$37,169$43,289
Poverty rate2.5%10.6%12.4%
Median home value$333,300$376,000$303,400
Median gross rent$814$1,150$1,348
Homeownership89%72.4%65%
Bachelor's degree or higher37%31.2%35%
Unemployment rate3.2%3.7%5.2%
Works from home8.8%12.2%13.5%
Born outside the US0.9%5.7%13.9%
Median age4937.138.7
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 stationMOSCOW U OF I, ID US14.4 km away
Rain in a year28 in
Snow in a year51 in

Average high and low by month

January37.4°F / 22.2°F3.33 in rain, 14.5 in snow
February42°F / 23.8°F2.56 in rain, 8.6 in snow
March50.1°F / 28°F3.05 in rain, 4.9 in snow
April58°F / 32°F2.75 in rain, 1 in snow
May67.3°F / 37.9°F2.6 in rain, 0.2 in snow
June73.4°F / 42°F1.73 in rain
July84.4°F / 45.3°F0.66 in rain
August85.6°F / 45.2°F0.7 in rain
September76.2°F / 39.7°F1.01 in rain
October60.5°F / 32.8°F2.4 in rain, 0.2 in snow
November44.9°F / 27.4°F3.52 in rain, 6 in snow
December36.4°F / 21.6°F3.47 in rain, 15.5 in snow
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 supermarketNone of this ZIP code
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%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Troy School District 28795.8% of this ZIP code's land area
Whitepine Joint School District 2882.6% of this ZIP code's land area
Kendrick Joint School District 2831.1% 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 vulnerability18more vulnerable than 18% of US census tracts
Socioeconomic status18more vulnerable than 18% of US census tracts
Household characteristics43more vulnerable than 43% of US census tracts
Racial and ethnic minority status8more vulnerable than 8% of US census tracts
Housing type and transport25more vulnerable than 25% of US census tracts
Walkability5.2 out of 20Least walkable
Nearby ZIP codes

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

83843 Moscow, ID16.9 km away
83844 Moscow, ID17.7 km away
83537 Kendrick, ID17.8 km away
83857 Princeton, ID18.1 km away
83535 Juliaetta, ID19 km away
83823 Deary, ID19.9 km away
83872 Viola, ID20.2 km away
83834 Harvard, ID22.2 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.

Latah County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area112.03 sq mi
Water area0.2 sq mi
Population density20 people per sq mi
Latitude, longitude46.7426, -116.7681

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.

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