Postal Codes

83431 ZIP Code

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ZIP code 83431 covers Lewisville, Idaho, with a population of about 1,066 and a median household income of $81,667.

Population
1,06685 per square mile
Median age
36.72 points below the US average
Median household income
$81,6671.1× the Idaho median
Poverty rate
12.7%about the US average
Typical home value
$401,948up 24% in five years
Median rent
$80030% below the Idaho median
Degree or higher
20.9%14.1 points below the US average
Homeownership
80.8%15.8 points above the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
19

Where 83431 is

Lewisville, 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

Population1,066
Median age36.7
Family households77.7%
Born outside the US12.1%
Speaks a language other than English at home26.3%
White (non-Hispanic)76.3%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino23.1%
Veterans5.2%
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$81,667
Income per person$35,536
Poverty rate12.7%
Households on SNAP or cash assistance3.4%

Household income distribution

Under $10k0.0%
$10–15k2.7%
$15–20k5.5%
$20–25k11.3%
$25–30k0.3%
$30–35k0.0%
$35–40k6.4%
$40–45k0.6%
$45–50k6.4%
$50–60k3.4%
$60–75k11.6%
$75–100k11.6%
$100–125k14.9%
$125–150k6.1%
$150–200k14.0%
$200k or more5.2%

Income as declared to the IRS

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

Tax returns filed410
Mean adjusted gross income$66,202
Returns declaring $200,000 or more0%
Returns, under $25k29.3%
Returns, $25k–$50k22.0%
Returns, $50k–$75k19.5%
Returns, $75k–$100k12.2%
Returns, $100k–$200k17.1%
Returns, $200k or more0.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$238,600
Median gross rent$800
Rent as a share of household income21.2%
Owner-occupied80.8%
Vacant homes5.7%
Median year built1982

What the homes are

Detached house86.8%
5 to 19 units2.9%
Mobile home10.3%
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$401,948as of 2026-07
Typical home value, 1 yearup 3.7%
Typical home value, 5 yearsup 24%
Typical home value, 10 yearsup 156.9%
Typical home value since 2000
200920172026$401,948$123,790

$144,405 in 2009 to $401,948 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate6%
Bachelor's degree or higher20.9%
High school diploma or higher81.3%
Works from home5.3%
Drives to work alone68.2%
Takes public transport10.5%
Commutes 45 minutes or more12.3%
Health

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

Obesity33.6% same as the national average of 33.4%
Diagnosed diabetes10.5% 1.5 pts below the national average of 12%
Currently smokes13% same as the national average of 13.2%
High blood pressure31.6% 2.5 pts below the national average of 34.1%
Fair or poor general health17.9% 2.4 pts below the national average of 20.3%
No health insurance (18–64)11% same as the national average of 11.3%
Depression22% same as the national average of 21.9%
No leisure-time physical activity23.2% 2.2 pts below the national average of 25.4%
Arthritis25.8% 0.7 pts above the national average of 25.1%
Binge drinking14.2% 1.8 pts below the national average of 16%
Taking blood pressure medication71.4% 3.3 pts below the national average of 74.7%
Cancer (non-skin)8.3% 0.6 pts above the national average of 7.7%
Current asthma10.7% same as the national average of 10.4%
Coronary heart disease6.6% same as the national average of 6.2%
Routine check-up in past year72.9% 3.8 pts below the national average of 76.7%
Cholesterol screening80.5% 5.4 pts below the national average of 85.9%
Cognitive disability16.1% 1.3 pts above the national average of 14.8%
Colorectal screening62.7% 1.6 pts below the national average of 64.3%
COPD7.2% 0.6 pts above the national average of 6.6%
Visited a dentist63.4% 2.1 pts above the national average of 61.3%
Any disability33.5% 2.8 pts above the national average of 30.7%
Lacks emotional support19.7% 5.1 pts below the national average of 24.8%
Food insecurity12.7% 4.4 pts below the national average of 17.1%
Received food stamps8.8% 5.5 pts below the national average of 14.3%
Hearing disability9.5% 2.8 pts above the national average of 6.7%
High cholesterol34.9% 1.3 pts below the national average of 36.2%
Housing insecurity10.3% 3.5 pts below the national average of 13.8%
Independent living disability8.3% same as the national average of 8.4%
Lacks transport7.5% 1.7 pts below the national average of 9.2%
Loneliness28.6% 5.8 pts below the national average of 34.4%
Mammography use69.7% 6.2 pts below the national average of 75.9%
Poor mental health (14+ days)16% 0.8 pts below the national average of 16.8%
Mobility disability14.5% 0.5 pts above the national average of 14%
Poor physical health (14+ days)13.9% same as the national average of 13.5%
Self-care disability3.7% same as the national average of 4%
Utility shut-off threat6.6% 2.2 pts below the national average of 8.8%
Sleeps under 7 hours33.9% 2.5 pts below the national average of 36.4%
Stroke3.4% same as the national average of 3.4%
All natural teeth lost14.7% 1.7 pts above the national average of 13%
Vision disability4.9% 0.7 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments19
People employed454
Annual payroll$23,252,000
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 66.7% of US census tracts
FEMA ratingRelatively Low to Relatively Moderate across the 2 census tracts this ZIP code covers
Expected annual loss74.7 out of 100
Community resilience30.5 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 weather97.4Very High at its worst in this ZIP code
Cold wave97Very High at its worst in this ZIP code
Heat wave92.9Relatively High at its worst in this ZIP code
Lightning88.4Relatively High at its worst in this ZIP code
Earthquake83.2Relatively Moderate at its worst in this ZIP code
Wildfire79.8Relatively Low at its worst in this ZIP code
Volcanic activity79.6Very Low at its worst in this ZIP code
Drought78.7Very Low at its worst in this ZIP code
Landslide59.5Very Low at its worst in this ZIP code
Hail59.4Relatively Low at its worst in this ZIP code
River flooding52.7Relatively Moderate at its worst in this ZIP code
Strong wind48.5Relatively Low at its worst in this ZIP code
Tornado13.9Very Low at its worst in this ZIP code
Ice storm12Very 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$81,667$74,636$78,538
Income per person$35,536$37,169$43,289
Poverty rate12.7%10.6%12.4%
Median home value$238,600$376,000$303,400
Median gross rent$800$1,150$1,348
Homeownership80.8%72.4%65%
Bachelor's degree or higher20.9%31.2%35%
Unemployment rate6%3.7%5.2%
Works from home5.3%12.2%13.5%
Born outside the US12.1%5.7%13.9%
Median age36.737.138.7
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 stationRIGBY, ID US8.6 km away
Rain in a year13 in

Average high and low by month

January30.7°F / 14.9°F1.32 in rain
February35.4°F / 17.7°F0.78 in rain
March47.9°F / 27.5°F1.12 in rain
April57.1°F / 33°F1.44 in rain
May66.7°F / 41.5°F1.8 in rain
June75°F / 48.2°F1.3 in rain
July84.5°F / 54.6°F0.56 in rain
August84.3°F / 53.5°F0.78 in rain
September74.9°F / 46°F1.09 in rain
October59.7°F / 34.8°F1.19 in rain
November43.1°F / 25.2°F0.79 in rain
December29.9°F / 15.7°F1.31 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 supermarket2% of this ZIP code's area
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%.

Jefferson County Joint School District 251100% 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 vulnerability43more vulnerable than 43% of US census tracts
Socioeconomic status46more vulnerable than 46% of US census tracts
Household characteristics73more vulnerable than 73% of US census tracts
Racial and ethnic minority status23more vulnerable than 23% of US census tracts
Housing type and transport28more vulnerable than 28% of US census tracts
Walkability4.2 out of 20Least walkable
Nearby ZIP codes

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

83434 Menan, ID6.6 km away
83444 Roberts, ID9.2 km away
83442 Rigby, ID9.5 km away
83454 Ucon, ID10.1 km away
83401 Idaho Falls, ID16.9 km away
83427 Iona, ID17.7 km away
83402 Idaho Falls, ID20.2 km away
83404 Idaho Falls, ID22 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.

Jefferson County100% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area12.53 sq mi
Water area0.19 sq mi
Population density85 people per sq mi
Latitude, longitude43.6725, -112.0189

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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