83440 ZIP Code — Rexburg, ID
Madison County, Idaho
ZIP code 83440 is located in Rexburg, Idaho, within Madison County. It covers approximately 181.67 square miles and serves a population of 49,410 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 208.
About ZIP code 83440
The housing stock consists of a significant share of large multi-unit buildings. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $330,700. Renters make up the majority at 62%, typical of denser urban areas.
The gap between median ($52,131) and mean household income suggests income inequality — a small number of higher earners pull the average up. Poverty affects 31% of residents, above the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 15 minutes is near the national average.
Educational attainment is near the national average, with 39% of residents holding a bachelor's degree or higher.
49,410
population
181.67
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
83440 ZIP code map
Cities in ZIP code 83440
Below are the cities the US Postal Service accepts for ZIP code 83440. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Rexburg | Acceptable |
| Rexburg | Preferred |
Nearby ZIP codes
83448 Sugar City (4.8 mi)
83460 Rexburg (5.5 mi)
83441 Rexburg (6 mi)
83451 Teton (7.1 mi)
83442 Rigby (10.9 mi)
83436 Newdale (12.8 mi)
83443 Ririe (13.9 mi)
83434 Menan (17.2 mi)
83431 Lewisville (18.6 mi)
83401 Idaho Falls (19.4 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 49,410 |
| Population density | 272 / sq mi |
| State FIPS | 16 |
| County FIPS | 065 |
| Geography | |
|---|---|
| Land area | 181.67 sq mi |
| Water area | 3.13 sq mi |
| Latitude | 43.7782 |
| Longitude | -111.6889 |
| Timezone | Mountain (MT) |
| Area code | 208 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 55.9% | 55.6% | 41.8% |
| $50k – $100k | 25.9% | 25.7% | 34.0% |
| $100k – $200k | 14.7% | 15.0% | 19.5% |
| Over $200k | 3.5% | 3.7% | 4.7% |
Demographics & statistics
49,410
Population
272
People per sq mi
21.6
Median age
$52,131
Median household income
$21,139
Per capita income
$330,700
Median home value
$906
Median monthly rent
38.1%
Home ownership
31.4%
Poverty rate
7.7%
Unemployment
6,551
Housing units
38.9%
Bachelor's or higher
Age distribution
Male
Female
1,526
Under 5
1,884
1,064
5–9
1,314
958
10–14
1,183
5,769
15–19
7,123
5,646
20–24
6,971
2,937
25–34
3,626
1,238
35–44
1,529
969
45–54
1,197
437
55–59
539
479
60–64
592
590
65–74
729
344
75–84
424
153
85+
189
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 9,605 | 19.4% |
| 18 and over | 39,805 | 80.6% |
| 65 and over | 2,429 | 4.9% |
| Median age | 21.6 years | |
Race & ethnicity
White
83.9%
Hispanic or Latino
5.7%
Two or more races
5%
Other race
2.5%
Asian
1.8%
Black or African American
0.8%
American Indian / Alaska Native
0.3%
| Group | Count | % |
|---|---|---|
| White | 43,985 | 83.9% |
| Hispanic or Latino | 2,999 | 5.7% |
| Two or more races | 2,603 | 5% |
| Other race | 1,321 | 2.5% |
| Asian | 935 | 1.8% |
| Black or African American | 401 | 0.8% |
| American Indian / Alaska Native | 142 | 0.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 55.9% | 55.6% | 41.8% |
| $50k – $100k | 25.9% | 25.7% | 34.0% |
| $100k – $200k | 14.7% | 15.0% | 19.5% |
| Over $200k | 3.5% | 3.7% | 4.7% |
Under $10k
3.5%
$10k–$15k
5.7%
$15k–$25k
12.7%
$25k–$35k
10.5%
$35k–$50k
15.6%
$50k–$75k
19.2%
$75k–$100k
10.1%
$100k–$150k
14.4%
$150k–$200k
3.5%
$200k+
5.0%
| Range | % of households |
|---|---|
| Under $10k | 3.5% |
| $10k–$15k | 5.7% |
| $15k–$25k | 12.7% |
| $25k–$35k | 10.5% |
| $35k–$50k | 15.6% |
| $50k–$75k | 19.2% |
| $75k–$100k | 10.1% |
| $100k–$150k | 14.4% |
| $150k–$200k | 3.5% |
| $200k+ | 5.0% |
| Median income | $52,131 |
Housing
Home values
Under $50k
3.9%
$50k–$100k
3.5%
$100k–$150k
4.6%
$150k–$200k
6.0%
$200k–$300k
25.5%
$300k–$500k
37.3%
$500k–$1M
18.5%
$1M+
0.7%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $330,700 |
| Median rent / month | $906 |
| Owner occupied | 38.1% |
| Renter occupied | 61.9% |
| Vacant | 17.0% |
| Single-family detached | 34.0% |
| Large apartment buildings | 22.9% |
| Mobile homes | 3.9% |
| Median rooms | 4.9 |
| Avg household size (owned) | 4.48 |
Year built
| Era | % |
|---|---|
| 2020 or later | 1.6% |
| 2010–2019 | 30.6% |
| 2000–2009 | 24.8% |
| 1990–1999 | 10.6% |
| 1980–1989 | 7.7% |
| 1970–1979 | 11.7% |
| 1960–1969 | 5.5% |
| 1950–1959 | 3.1% |
| 1940–1949 | 1.1% |
| 1939 or earlier | 3.2% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 5.5% |
| 1 bedroom | 10.4% |
| 2 bedrooms | 29.8% |
| 3 bedrooms | 28.7% |
| 4 bedrooms | 12.5% |
| 5+ bedrooms | 13.1% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 3.0% |
| 1 vehicle | 23.7% |
| 2 vehicles | 42.8% |
| 3 or more | 30.5% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 55.5% |
| Electricity | 34.6% |
| Propane / LP gas | 5.7% |
| Fuel oil | 0.4% |
| Wood | 3.1% |
| Solar | 0.1% |
| No fuel used | 0.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 7,702 | 68.9% |
| Cohabiting couple | 614 | 5.5% |
| Male householder, no spouse | 815 | 7.3% |
| Female householder, no spouse | 2,053 | 18.4% |
| Households with children under 18 | 3,709 | 33.2% |
| Households with seniors (65+) | 1,478 | 13.2% |
| Average household size | 3.88 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 49.5% | 60.7% |
| Married | 47.8% | 34.7% |
| Separated | 0.9% | 0.3% |
| Widowed | 0.6% | 2.1% |
| Divorced | 1.1% | 2.3% |
Education
Less than 9th grade
0.2%
Some HS, no diploma
2.4%
HS graduate
16.6%
Some college, no degree
28.0%
Associate's degree
14.0%
Bachelor's degree
27.6%
Graduate / professional
11.3%
| Metric | % |
|---|---|
| HS diploma or higher | 97.4% |
| Bachelor's or higher | 38.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 580 | 2.0% |
| Kindergarten | 306 | 1.0% |
| Elementary school | 3,366 | 11.5% |
| High school | 3,152 | 10.8% |
| College / grad school | 21,803 | 74.6% |
Employment
Industry of employment
Education & healthcare
34.1%
Retail trade
16.1%
Arts, food & hospitality
14.2%
Professional & management
9.4%
Manufacturing
4.8%
Construction
4.3%
Finance & real estate
4.2%
Transportation & utilities
2.5%
Public administration
2.5%
Other services
2.3%
Wholesale trade
2.1%
Information
2.0%
Agriculture & mining
1.4%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 34.7% |
| Service | 27.2% |
| Sales & office | 22.8% |
| Natural resources & construction | 6.1% |
| Production & transportation | 9.2% |
Employment type
| Type | % |
|---|---|
| Private sector | 81.2% |
| Government | 15.7% |
| Self-employed | 2.8% |
| Unpaid family workers | 0.3% |
Commute
| Method | % |
|---|---|
| Drive alone | 58.9% |
| Carpool | 16.2% |
| Public transit | 1.1% |
| Walk | 10.7% |
| Work from home | 12.1% |
| Other means | 1.0% |
| Avg commute (minutes) | 15.1 |
Poverty
All people
31.4%
Under 18 years
16.3%
18 and over
35.7%
Married-couple families
15.2%
Female-led households
8.5%
Income support
| Source | % of households |
|---|---|
| Social Security | 15.4% |
| Retirement income | 10.9% |
| Supplemental Security | 2.1% |
| Cash public assistance | 3.7% |
| Food stamps / SNAP | 11.6% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 29.2% |
| High blood pressure | 18.0% |
| High cholesterol | 19.0% |
| Diabetes | 5.1% |
| Heart disease | 3.4% |
| Stroke | 1.7% |
| Asthma | 11.4% |
| Arthritis | 12.2% |
| Kidney disease | 1.9% |
| Pulmonary disease | 4.5% |
| Cancer | 3.1% |
| Behavior / access | % |
|---|---|
| Smoking | 14.0% |
| Binge drinking | 15.7% |
| No physical activity | 19.9% |
| Less than 7 hrs sleep | 29.1% |
| Depression | 23.4% |
| Fair or poor health | 11.6% |
| Poor mental health | 18.4% |
| Poor physical health | 8.8% |
| No health insurance | 16.0% |
| Visited doctor (checkup) | 63.3% |
| Visited dentist | 60.9% |
| Cholesterol screening | 72.8% |
| Teeth loss | 14.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 699 | 1.8% |
| Disability | % |
|---|---|
| Any disability | 6.6% |
| Under 18 | 1.7% |
| 18–64 years | 6.5% |
| 65 and over | 29.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 77.1% |
| Public insurance | 23.9% |
| No insurance | 6.3% |
| Uninsured under 19 | 2.1% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 46,000 | 93.1% |
| Spanish | 447 | 1.0% |
| Other Indo-European | 195 | 0.4% |
| Asian & Pacific Islander | 137 | 0.3% |
| Other languages | 115 | 0.3% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 47,445 | 96.0% |
| Born in same state | 47,120 | 95.4% |
| Born in different state | 18,823 | 38.1% |
| Foreign born | 325 | 0.7% |
| Naturalized citizen | 1,965 | 4.0% |
| Not a US citizen | 571 | 29.1% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| French | 15,880 | 32.1% |
| Arab | 2,828 | 5.7% |
| Dutch | 2,650 | 5.4% |
| Italian | 2,096 | 4.2% |
| Polish | 1,053 | 2.1% |
| Ancestry | Count | % |
|---|---|---|
| English | 533 | 1.1% |
| Norwegian | 28 | 0.1% |
| German | 18 | 0% |
| Irish | 17 | 0% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 22.6% |
| Internet access | 98.3% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 83440
What city is ZIP code 83440 in?
ZIP code 83440 is primarily assigned to Rexburg, Idaho.
What county is ZIP code 83440 in?
ZIP code 83440 falls within Madison County, Idaho.
What is the poverty rate in ZIP code 83440?
31% of residents in ZIP code 83440 live below the poverty line, above the national average.
Is ZIP code 83440 mostly rentals?
62% of occupied units in ZIP code 83440 are renter-occupied.
What is the typical home value in ZIP code 83440?
The median home value in ZIP code 83440 is $330,700.
What is the population of ZIP code 83440?
ZIP code 83440 has an estimated population of 49,410 residents, with a density of 272 people per square mile.
What timezone is ZIP code 83440 in?
ZIP code 83440 observes the MST timezone.