Postal Codes

83429 ZIP Code

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ZIP code 83429 covers Island Park, Idaho, with a population of about 742 and a median household income of $79,750.

Population
7422 per square mile
Median age
66.928.2 points above the US average
Median household income
$79,7501.1× the Idaho median
Poverty rate
6.6%5.8 points below the US average
Typical home value
$599,799up 23.4% in five years
Degree or higher
35.3%about the US average
Homeownership
98.4%33.4 points above the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
70

Where 83429 is

Island Park, 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

Population742
Median age66.9
Family households72.4%
Born outside the US1.1%
Speaks a language other than English at home0.7%
White (non-Hispanic)94.3%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino1.2%
Veterans5.7%
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$79,750
Income per person$41,221
Poverty rate6.6%
Households on SNAP or cash assistance0%

Household income distribution

Under $10k6.3%
$10–15k2.6%
$15–20k0.0%
$20–25k8.1%
$25–30k3.7%
$30–35k0.5%
$35–40k0.5%
$40–45k3.9%
$45–50k5.5%
$50–60k4.5%
$60–75k7.9%
$75–100k24.7%
$100–125k24.9%
$125–150k1.6%
$150–200k4.5%
$200k or more0.8%

Income as declared to the IRS

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

Tax returns filed550
Mean adjusted gross income$94,738
Returns declaring $200,000 or more7.3%
Returns, under $25k23.6%
Returns, $25k–$50k21.8%
Returns, $50k–$75k18.2%
Returns, $75k–$100k12.7%
Returns, $100k–$200k16.4%
Returns, $200k or more7.3%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$473,300
Owner-occupied98.4%
Vacant homes88.8%
Median year built1985

What the homes are

Detached house88.5%
Attached house2.4%
2 to 4 units1.4%
5 to 19 units0.5%
Mobile home7.1%
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$599,799as of 2026-07
Typical home value, 1 yearup 5.9%
Typical home value, 5 yearsup 23.4%
Typical home value, 10 yearsup 176.6%
Typical home value since 2000
200920172026$617,073$187,531

$216,182 in 2009 to $599,799 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate2.1%
Bachelor's degree or higher35.3%
High school diploma or higher94.1%
Works from home25.3%
Drives to work alone49.1%
Takes public transport0%
Commutes 45 minutes or more9%
Health

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

Obesity30.9% 2.5 pts below the national average of 33.4%
Diagnosed diabetes13.3% 1.3 pts above the national average of 12%
Currently smokes9.9% 3.3 pts below the national average of 13.2%
High blood pressure40.4% 6.3 pts above the national average of 34.1%
Fair or poor general health16.9% 3.4 pts below the national average of 20.3%
No health insurance (18–64)6% 5.3 pts below the national average of 11.3%
Depression19.3% 2.6 pts below the national average of 21.9%
No leisure-time physical activity21.4% 4 pts below the national average of 25.4%
Arthritis38.2% 13.1 pts above the national average of 25.1%
Binge drinking11.1% 4.9 pts below the national average of 16%
Taking blood pressure medication81.5% 6.8 pts above the national average of 74.7%
Cancer (non-skin)14% 6.3 pts above the national average of 7.7%
Current asthma10.1% same as the national average of 10.4%
Coronary heart disease9.5% 3.3 pts above the national average of 6.2%
Routine check-up in past year81.8% 5.1 pts above the national average of 76.7%
Cholesterol screening90.4% 4.5 pts above the national average of 85.9%
Cognitive disability11.5% 3.3 pts below the national average of 14.8%
Colorectal screening74.5% 10.2 pts above the national average of 64.3%
COPD8.3% 1.7 pts above the national average of 6.6%
Visited a dentist74.7% 13.4 pts above the national average of 61.3%
Any disability35.9% 5.2 pts above the national average of 30.7%
Lacks emotional support16.6% 8.2 pts below the national average of 24.8%
Food insecurity7.5% 9.6 pts below the national average of 17.1%
Received food stamps5% 9.3 pts below the national average of 14.3%
Hearing disability13.1% 6.4 pts above the national average of 6.7%
High cholesterol41.2% 5 pts above the national average of 36.2%
Housing insecurity5.9% 7.9 pts below the national average of 13.8%
Independent living disability7.2% 1.2 pts below the national average of 8.4%
Lacks transport4.7% 4.5 pts below the national average of 9.2%
Loneliness24.1% 10.3 pts below the national average of 34.4%
Mammography use72.2% 3.7 pts below the national average of 75.9%
Poor mental health (14+ days)12% 4.8 pts below the national average of 16.8%
Mobility disability18% 4 pts above the national average of 14%
Poor physical health (14+ days)14.4% 0.9 pts above the national average of 13.5%
Self-care disability3.8% same as the national average of 4%
Utility shut-off threat4.2% 4.6 pts below the national average of 8.8%
Sleeps under 7 hours27.7% 8.7 pts below the national average of 36.4%
Stroke4.5% 1.1 pts above the national average of 3.4%
All natural teeth lost8.8% 4.2 pts below the national average of 13%
Vision disability4.5% 1.1 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments70
People employed291
Annual payroll$12,861,000
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 98.3% of US census tracts
FEMA ratingVery High
Expected annual loss98.6 out of 100
Community resilience14.9 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.

Wildfire98.9Relatively High at its worst in this ZIP code
River flooding98.6Very High at its worst in this ZIP code
Landslide98.4Relatively Moderate at its worst in this ZIP code
Winter weather96.8Very High at its worst in this ZIP code
Lightning96.1Very High at its worst in this ZIP code
Avalanche89.3Relatively Moderate at its worst in this ZIP code
Earthquake88.2Relatively Moderate at its worst in this ZIP code
Cold wave82Relatively High at its worst in this ZIP code
Drought79.1Relatively Low at its worst in this ZIP code
Hail67.4Relatively Low at its worst in this ZIP code
Volcanic activity60.3Very Low at its worst in this ZIP code
Strong wind41.8Relatively Low at its worst in this ZIP code
Tornado30.4Relatively Low at its worst in this ZIP code
Ice storm27.3Very Low at its worst in this ZIP code
Heat wave10.6Very 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$79,750$74,636$78,538
Income per person$41,221$37,169$43,289
Poverty rate6.6%10.6%12.4%
Median home value$473,300$376,000$303,400
Median gross rent$1,150$1,348
Homeownership98.4%72.4%65%
Bachelor's degree or higher35.3%31.2%35%
Unemployment rate2.1%3.7%5.2%
Works from home25.3%12.2%13.5%
Born outside the US1.1%5.7%13.9%
Median age66.937.138.7
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 stationISLAND PARK, ID US3.1 km away
Rain in a year29 in

Average high and low by month

January26.5°F / 5.9°F3.53 in rain
February29.7°F / 7.5°F2.64 in rain
March38.6°F / 14.5°F2.05 in rain
April47.4°F / 23.1°F2.37 in rain
May59.2°F / 31.5°F2.99 in rain
June67.3°F / 37.8°F2.63 in rain
July77.1°F / 42.8°F1.17 in rain
August77.2°F / 40°F1.14 in rain
September68°F / 32.2°F1.66 in rain
October51.3°F / 24.1°F2.09 in rain
November35.6°F / 14.3°F2.54 in rain
December25.5°F / 6.4°F4.01 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 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%.

Fremont County Joint School District 215100% 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 vulnerability5more vulnerable than 5% of US census tracts
Socioeconomic status5more vulnerable than 5% of US census tracts
Household characteristics7more vulnerable than 7% of US census tracts
Racial and ethnic minority status1more vulnerable than 1% of US census tracts
Housing type and transport32more vulnerable than 32% of US census tracts
Walkability3.6 out of 20Least walkable
Nearby ZIP codes

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

83433 Macks Inn, ID23.4 km away
59758 West Yellowstone, MT31.8 km away
83420 Ashton, ID48.2 km away
83421 Chester, ID51.3 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.

Fremont County100% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area494.6 sq mi
Water area23.93 sq mi
Population density2 people per sq mi
Latitude, longitude44.4466, -111.3679

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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