Postal Codes

83440 ZIP Code

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ZIP code 83440 covers Rexburg, Idaho, with a population of about 50,669 and a median household income of $57,701.

Population
50,669279 per square mile
Median age
21.317.4 points below the US average
Median household income
$57,70123% below the Idaho median
Poverty rate
27.8%15.4 points above the US average
Typical home value
$432,072up 21.2% in five years
Median rent
$95917% below the Idaho median
Degree or higher
39.7%4.7 points above the US average
Homeownership
38%27 points below the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
1,013

Where 83440 is

Rexburg, 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

Population50,669
Median age21.3
Family households74.9%
Born outside the US5.1%
Speaks a language other than English at home10.1%
White (non-Hispanic)84.3%
Black (non-Hispanic)0.8%
Asian (non-Hispanic)1.5%
Hispanic or Latino10.1%
Veterans1.6%
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$57,701
Income per person$22,680
Poverty rate27.8%
Households on SNAP or cash assistance11.9%

Household income distribution

Under $10k4.7%
$10–15k3.5%
$15–20k5.2%
$20–25k6.0%
$25–30k5.2%
$30–35k5.3%
$35–40k4.6%
$40–45k2.7%
$45–50k6.0%
$50–60k10.1%
$60–75k10.8%
$75–100k11.9%
$100–125k7.0%
$125–150k7.0%
$150–200k3.7%
$200k or more6.4%

Income as declared to the IRS

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

Tax returns filed14,760
Mean adjusted gross income$58,888
Returns declaring $200,000 or more3.3%
Returns, under $25k40.2%
Returns, $25k–$50k24.2%
Returns, $50k–$75k12.5%
Returns, $75k–$100k7.7%
Returns, $100k–$200k12.1%
Returns, $200k or more3.3%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$372,800
Median gross rent$959
Rent as a share of household income30.7%
Owner-occupied38%
Vacant homes13.8%
Median year built2002

What the homes are

Detached house35.2%
Attached house4.3%
2 to 4 units12%
5 to 19 units20.8%
20 or more units23.1%
Mobile home4.7%
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$432,072as of 2026-07
Typical home value, 1 yearup 4.8%
Typical home value, 5 yearsup 21.2%
Typical home value, 10 yearsup 120.4%
Typical asking rent$1,140as of 2026-07
Typical asking rent, 1 yearup 0.1%
Typical asking rent, 5 yearsup 28.2%
Typical home value since 2000
200920172026$432,093$155,819

$185,045 in 2009 to $432,072 in 2026.

Typical asking rent
202120232026$1,140$889

$889 in 2021 to $1,140 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate8.4%
Bachelor's degree or higher39.7%
High school diploma or higher96.9%
Works from home11.4%
Drives to work alone58.5%
Takes public transport1%
Commutes 45 minutes or more7.3%
Health

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

Obesity28.6% 4.8 pts below the national average of 33.4%
Diagnosed diabetes5% 7 pts below the national average of 12%
Currently smokes11.8% 1.4 pts below the national average of 13.2%
High blood pressure18.8% 15.3 pts below the national average of 34.1%
Fair or poor general health18.6% 1.7 pts below the national average of 20.3%
No health insurance (18–64)13.3% 2 pts above the national average of 11.3%
Depression27.8% 5.9 pts above the national average of 21.9%
No leisure-time physical activity22.4% 3 pts below the national average of 25.4%
Arthritis13.2% 11.9 pts below the national average of 25.1%
Binge drinking15.2% 0.8 pts below the national average of 16%
Taking blood pressure medication49.2% 25.5 pts below the national average of 74.7%
Cancer (non-skin)3.5% 4.2 pts below the national average of 7.7%
Current asthma12.1% 1.7 pts above the national average of 10.4%
Coronary heart disease3.1% 3.1 pts below the national average of 6.2%
Routine check-up in past year66.9% 9.8 pts below the national average of 76.7%
Cholesterol screening60.9% 25 pts below the national average of 85.9%
Cognitive disability25.4% 10.6 pts above the national average of 14.8%
Colorectal screening57.5% 6.8 pts below the national average of 64.3%
COPD5% 1.6 pts below the national average of 6.6%
Visited a dentist55.9% 5.4 pts below the national average of 61.3%
Any disability37.8% 7.1 pts above the national average of 30.7%
Lacks emotional support21.3% 3.5 pts below the national average of 24.8%
Food insecurity23.3% 6.2 pts above the national average of 17.1%
Received food stamps19.1% 4.8 pts above the national average of 14.3%
Hearing disability6.3% same as the national average of 6.7%
High cholesterol22.2% 14 pts below the national average of 36.2%
Housing insecurity15.2% 1.4 pts above the national average of 13.8%
Independent living disability12.6% 4.2 pts above the national average of 8.4%
Lacks transport15.3% 6.1 pts above the national average of 9.2%
Loneliness36% 1.6 pts above the national average of 34.4%
Mammography use68.2% 7.7 pts below the national average of 75.9%
Poor mental health (14+ days)23.5% 6.7 pts above the national average of 16.8%
Mobility disability9.1% 4.9 pts below the national average of 14%
Poor physical health (14+ days)12.4% 1.1 pts below the national average of 13.5%
Self-care disability3.1% 0.9 pts below the national average of 4%
Utility shut-off threat11% 2.2 pts above the national average of 8.8%
Sleeps under 7 hours35.1% 1.3 pts below the national average of 36.4%
Stroke1.8% 1.6 pts below the national average of 3.4%
All natural teeth lost16.5% 3.5 pts above the national average of 13%
Vision disability6.3% 0.7 pts above the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments1,013
People employed11,420
Annual payroll$407,840,000
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 54.4% of US census tracts
FEMA ratingRelatively Low to Relatively High across the 12 census tracts this ZIP code covers
Expected annual loss62.8 out of 100
Community resilience43.3 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.

Lightning93.5Very High at its worst in this ZIP code
Cold wave89.2Very High at its worst in this ZIP code
Wildfire84.6Relatively Moderate at its worst in this ZIP code
Earthquake79.4Relatively High at its worst in this ZIP code
Drought78.2Relatively Low at its worst in this ZIP code
Volcanic activity78Very Low at its worst in this ZIP code
Winter weather73Very High at its worst in this ZIP code
Heat wave68.6Relatively High at its worst in this ZIP code
Avalanche66Very Low at its worst in this ZIP code
Landslide65.5Relatively Moderate at its worst in this ZIP code
Hail61.4Relatively Moderate at its worst in this ZIP code
River flooding59.2Relatively High at its worst in this ZIP code
Strong wind39Relatively Moderate at its worst in this ZIP code
Tornado10.1Relatively Low at its worst in this ZIP code
Ice storm10Relatively 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$57,701$74,636$78,538
Income per person$22,680$37,169$43,289
Poverty rate27.8%10.6%12.4%
Median home value$372,800$376,000$303,400
Median gross rent$959$1,150$1,348
Homeownership38%72.4%65%
Bachelor's degree or higher39.7%31.2%35%
Unemployment rate8.4%3.7%5.2%
Works from home11.4%12.2%13.5%
Born outside the US5.1%5.7%13.9%
Median age21.337.138.7
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 stationREXBURG BYU IDAHO, ID US0.2 km away
Rain in a year13 in

Average high and low by month

January29.5°F / 14.2°F1.22 in rain
February34.1°F / 16.9°F0.78 in rain
March45.8°F / 26°F0.92 in rain
April56.1°F / 33°F1.16 in rain
May66°F / 41°F1.81 in rain
June75°F / 47.1°F1.49 in rain
July85°F / 52°F0.59 in rain
August84.1°F / 50.2°F0.7 in rain
September74°F / 42.6°F1.04 in rain
October58.2°F / 33.1°F1.13 in rain
November42.1°F / 23.7°F0.71 in rain
December30.1°F / 15.1°F1.08 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 supermarket21% of this ZIP code's area
Far from a supermarket25% 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%.

This ZIP code is served by 2 school districts, so the address decides which one, not the ZIP code.

Madison School District 32170.2% of this ZIP code's land area
Sugar-Salem Joint School District 32229.6% 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 vulnerability24more vulnerable than 24% of US census tracts
Socioeconomic status39more vulnerable than 39% of US census tracts
Household characteristics19more vulnerable than 19% of US census tracts
Racial and ethnic minority status12more vulnerable than 12% of US census tracts
Housing type and transport30more vulnerable than 30% of US census tracts
Walkability6.4 out of 20Below average
Nearby ZIP codes

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

83460 Rexburg, ID1.8 km away
83441 Rexburg, ID8.7 km away
83448 Sugar City, ID8.8 km away
83451 Teton, ID14.3 km away
83438 Parker, ID16.8 km away
83436 Newdale, ID17.2 km away
83442 Rigby, ID17.8 km away
83434 Menan, ID18.2 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.

Madison County96.1% of this ZIP code's land area
Fremont County3.9% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area181.67 sq mi
Water area3.13 sq mi
Population density279 people per sq mi
Latitude, longitude43.8100, -111.7890

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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