Postal Codes

83236 ZIP Code

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ZIP code 83236 covers Firth, Idaho, with a population of about 1,929 and a median household income of $65,938.

Population
1,9299 per square mile
Median age
41.42.7 points above the US average
Median household income
$65,93812% below the Idaho median
Poverty rate
4.3%8.1 points below the US average
Typical home value
$448,608up 20% in five years
Median rent
$63944% below the Idaho median
Degree or higher
17.3%17.7 points below the US average
Homeownership
87.7%22.7 points above the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
38

Where 83236 is

Firth, 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

Population1,929
Median age41.4
Family households55.2%
Born outside the US2.7%
Speaks a language other than English at home7.1%
White (non-Hispanic)88.2%
Black (non-Hispanic)0%
Asian (non-Hispanic)2%
Hispanic or Latino6.1%
Veterans8.3%
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$65,938
Income per person$34,644
Poverty rate4.3%
Households on SNAP or cash assistance4%

Household income distribution

Under $10k1.5%
$10–15k3.4%
$15–20k1.0%
$20–25k2.8%
$25–30k20.3%
$30–35k1.5%
$35–40k1.9%
$40–45k1.9%
$45–50k9.9%
$50–60k2.8%
$60–75k12.4%
$75–100k13.7%
$100–125k6.9%
$125–150k8.3%
$150–200k7.1%
$200k or more4.6%

Income as declared to the IRS

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

Tax returns filed990
Mean adjusted gross income$81,253
Returns declaring $200,000 or more5.1%
Returns, under $25k26.3%
Returns, $25k–$50k23.2%
Returns, $50k–$75k15.2%
Returns, $75k–$100k11.1%
Returns, $100k–$200k19.2%
Returns, $200k or more5.1%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$277,700
Median gross rent$639
Owner-occupied87.7%
Vacant homes6.6%
Median year built1973

What the homes are

Detached house84.7%
Attached house1.2%
2 to 4 units2.8%
5 to 19 units0.8%
Mobile home10.5%
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$448,608as of 2026-07
Typical home value, 1 yearup 3.7%
Typical home value, 5 yearsup 20%
Typical home value, 10 yearsup 150.9%
Typical home value since 2000
201520202026$448,608$167,629

$167,629 in 2015 to $448,608 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate2.2%
Bachelor's degree or higher17.3%
High school diploma or higher92.6%
Works from home3.8%
Drives to work alone82%
Takes public transport2.1%
Commutes 45 minutes or more18.6%
Health

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

Obesity37.8% 4.4 pts above the national average of 33.4%
Diagnosed diabetes11.1% 0.9 pts below the national average of 12%
Currently smokes12.9% same as the national average of 13.2%
High blood pressure34.8% 0.7 pts above the national average of 34.1%
Fair or poor general health18% 2.3 pts below the national average of 20.3%
No health insurance (18–64)10% 1.3 pts below the national average of 11.3%
Depression22.2% same as the national average of 21.9%
No leisure-time physical activity22.8% 2.6 pts below the national average of 25.4%
Arthritis29.7% 4.6 pts above the national average of 25.1%
Binge drinking13.6% 2.4 pts below the national average of 16%
Taking blood pressure medication73.4% 1.3 pts below the national average of 74.7%
Cancer (non-skin)9.3% 1.6 pts above the national average of 7.7%
Current asthma10.7% same as the national average of 10.4%
Coronary heart disease6.9% 0.7 pts above the national average of 6.2%
Routine check-up in past year75.4% 1.3 pts below the national average of 76.7%
Cholesterol screening82.7% 3.2 pts below the national average of 85.9%
Cognitive disability15.4% 0.6 pts above the national average of 14.8%
Colorectal screening64.5% same as the national average of 64.3%
COPD7.1% 0.5 pts above the national average of 6.6%
Visited a dentist69.7% 8.4 pts above the national average of 61.3%
Any disability36.9% 6.2 pts above the national average of 30.7%
Lacks emotional support20.2% 4.6 pts below the national average of 24.8%
Food insecurity11.8% 5.3 pts below the national average of 17.1%
Received food stamps7.7% 6.6 pts below the national average of 14.3%
Hearing disability10.3% 3.6 pts above the national average of 6.7%
High cholesterol34.2% 2 pts below the national average of 36.2%
Housing insecurity9.8% 4 pts below the national average of 13.8%
Independent living disability7.9% 0.5 pts below the national average of 8.4%
Lacks transport6.7% 2.5 pts below the national average of 9.2%
Loneliness29% 5.4 pts below the national average of 34.4%
Mammography use69.4% 6.5 pts below the national average of 75.9%
Poor mental health (14+ days)15.6% 1.2 pts below the national average of 16.8%
Mobility disability15.6% 1.6 pts above the national average of 14%
Poor physical health (14+ days)14.2% 0.7 pts above the national average of 13.5%
Self-care disability3.6% same as the national average of 4%
Utility shut-off threat6.2% 2.6 pts below the national average of 8.8%
Sleeps under 7 hours31.8% 4.6 pts below the national average of 36.4%
Stroke3.5% same as the national average of 3.4%
All natural teeth lost11.4% 1.6 pts below the national average of 13%
Vision disability4.7% 0.9 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments38
People employed339
Annual payroll$12,842,000
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 69.9% of US census tracts
FEMA ratingRelatively Moderate to Relatively High across the 5 census tracts this ZIP code covers
Expected annual loss69.6 out of 100
Community resilience23.6 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.

Winter weather98.3Very High at its worst in this ZIP code
Wildfire95.9Relatively Moderate at its worst in this ZIP code
Cold wave94.8Very High at its worst in this ZIP code
Landslide94.7Relatively Moderate at its worst in this ZIP code
Lightning92.8Very High at its worst in this ZIP code
Heat wave90.7Relatively High at its worst in this ZIP code
Earthquake84Relatively Moderate at its worst in this ZIP code
Drought81.1Relatively Low at its worst in this ZIP code
Volcanic activity80.1Relatively Low at its worst in this ZIP code
Hail65.6Relatively Moderate at its worst in this ZIP code
Strong wind60.7Relatively Moderate at its worst in this ZIP code
River flooding58.6Relatively High at its worst in this ZIP code
Ice storm11Very Low at its worst in this ZIP code
Tornado10Very Low at its worst in this ZIP code
Avalanche9.3Very 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$65,938$74,636$78,538
Income per person$34,644$37,169$43,289
Poverty rate4.3%10.6%12.4%
Median home value$277,700$376,000$303,400
Median gross rent$639$1,150$1,348
Homeownership87.7%72.4%65%
Bachelor's degree or higher17.3%31.2%35%
Unemployment rate2.2%3.7%5.2%
Works from home3.8%12.2%13.5%
Born outside the US2.7%5.7%13.9%
Median age41.437.138.7
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 stationBLACKFOOT FIRE DEPT, ID US19.5 km away
Rain in a year12 in
Snow in a year15 in

Average high and low by month

January31.2°F / 16.8°F0.99 in rain, 6 in snow
February37°F / 20.5°F0.73 in rain, 2.2 in snow
March48.8°F / 29.1°F1.1 in rain, 0.3 in snow
April57.4°F / 34.7°F1.4 in rain, 0.7 in snow
May67.6°F / 42.8°F1.75 in rain
June76.7°F / 49.8°F1.03 in rain
July86.9°F / 56°F0.5 in rain
August85.9°F / 54.2°F0.6 in rain
September75.1°F / 46°F0.97 in rain
October60.5°F / 35°F1.12 in rain, 0.8 in snow
November44.8°F / 25.5°F0.75 in rain, 1.4 in snow
December32.1°F / 17.5°F1.11 in rain, 3.3 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.

Firth School District 5982.8% of this ZIP code's land area
Blackfoot School District 5511.7% of this ZIP code's land area
Bonneville Joint School District 935.5% 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 vulnerability41more vulnerable than 41% of US census tracts
Socioeconomic status31more vulnerable than 31% of US census tracts
Household characteristics74more vulnerable than 74% of US census tracts
Racial and ethnic minority status35more vulnerable than 35% of US census tracts
Housing type and transport42more vulnerable than 42% of US census tracts
Walkability4.1 out of 20Least walkable
Nearby ZIP codes

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

83218 Basalt, ID1.6 km away
83274 Shelley, ID9.3 km away
83221 Blackfoot, ID20.3 km away
83403 Idaho Falls, ID20.9 km away
83405 Idaho Falls, ID20.9 km away
83415 Idaho Falls, ID20.9 km away
83404 Idaho Falls, ID22.6 km away
83402 Idaho Falls, ID22.8 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.

Bingham County100% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area217.14 sq mi
Water area0.47 sq mi
Population density9 people per sq mi
Latitude, longitude43.3021, -112.1588

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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