83429 ZIP Code — Island Park, ID

Fremont County, Idaho

ZIP code 83429 is located in Island Park, Idaho, within Fremont County. It covers approximately 494.60 square miles and serves a population of 643 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 208.

About ZIP code 83429

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $484,600.

Median household income is $88,750. The poverty rate of 4% is below the national average. 64% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with arts, entertainment, and food service as the leading industry. The average commute of 19 minutes is near the national average.

Educational attainment is high — 46% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Notable community characteristics include a notable veteran presence at 12% of civilians, above the national average of 7%.

Overall, ZIP code 83429 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

643
population
494.60
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
83429 ZIP code map
Cities in ZIP code 83429

Below are the cities the US Postal Service accepts for ZIP code 83429. Using any city not on this list may result in mail delivery delays.

City Status
Island Park Acceptable
Island Park Preferred
Demographics updated 06/2026
Population
Total population 643
Population density 1 / sq mi
State FIPS 16
County FIPS 043
Geography
Land area 494.60 sq mi
Water area 23.93 sq mi
Latitude 44.5047
Longitude -111.4063
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 36.4% 42.4% 41.8%
$50k – $100k 39.2% 37.8% 34.0%
$100k – $200k 20.7% 18.3% 19.5%
Over $200k 3.6% 1.5% 4.7%

Demographics & statistics

643
Population
1
People per sq mi
69.7
Median age
$88,750
Median household income
$49,614
Per capita income
$484,600
Median home value
$0
Median monthly rent
100.0%
Home ownership
4.2%
Poverty rate
3.0%
Unemployment
3,376
Housing units
46.3%
Bachelor's or higher

Age distribution

Male Female
0
Under 5
1
2
5–9
2
3
10–14
4
10
15–19
10
2
20–24
2
1
25–34
1
11
35–44
11
34
45–54
36
7
55–59
8
32
60–64
34
159
65–74
168
49
75–84
51
2
85+
3
← Male
Female →

Age summary

GroupCount%
Under 18274.2%
18 and over61695.8%
65 and over43267.2%
Median age69.7 years

Race & ethnicity

White 96.3%
Hispanic or Latino 1.8%
Other race 1.8%
GroupCount%
White63196.3%
Hispanic or Latino121.8%
Other race121.8%

Household income

Income range This ZIP County avg State avg
Under $50k 36.4% 42.4% 41.8%
$50k – $100k 39.2% 37.8% 34.0%
$100k – $200k 20.7% 18.3% 19.5%
Over $200k 3.6% 1.5% 4.7%
$15k–$25k 4.3%
$25k–$35k 4.9%
$35k–$50k 14.8%
$50k–$75k 15.4%
$75k–$100k 14.5%
$100k–$150k 39.8%
$150k–$200k 1.9%
$200k+ 4.3%
Range% of households
$15k–$25k4.3%
$25k–$35k4.9%
$35k–$50k14.8%
$50k–$75k15.4%
$75k–$100k14.5%
$100k–$150k39.8%
$150k–$200k1.9%
$200k+4.3%
Median income$88,750

Housing

Home values

Under $50k 1.9%
$100k–$150k 4.6%
$150k–$200k 4.0%
$200k–$300k 18.2%
$300k–$500k 23.1%
$500k–$1M 42.9%
$1M+ 5.2%

Housing overview

MetricValue
Median home value$484,600
Median rent / month$0
Owner occupied100.0%
Renter occupied0.0%
Vacant90.4%
Single-family detached90.6%
Large apartment buildings0.0%
Mobile homes6.3%
Median rooms5.2
Avg household size (owned)1.96

Year built

Era%
2020 or later0.5%
2010–20193.5%
2000–200926.6%
1990–199914.1%
1980–198915.7%
1970–197925.9%
1960–19696.1%
1950–19592.6%
1940–19494.4%
1939 or earlier0.5%

Bedrooms

Size% of units
No bedroom (studio)0.5%
1 bedroom8.8%
2 bedrooms23.2%
3 bedrooms33.3%
4 bedrooms25.7%
5+ bedrooms8.6%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle15.1%
2 vehicles62.3%
3 or more22.5%

Heating fuel

Fuel type%
Utility gas4.9%
Electricity18.2%
Propane / LP gas55.6%
Fuel oil2.2%
Wood19.1%

Households & families

Household typeCount%
Married-couple family26481.5%
Cohabiting couple92.8%
Male householder, no spouse268.0%
Female householder, no spouse257.7%
Households with children under 18319.6%
Households with seniors (65+)21967.6%
Average household size1.96

Marital status

StatusMaleFemale
Never married5.8%10.0%
Married86.5%83.5%
Separated0.0%0.0%
Widowed4.5%0.3%
Divorced3.2%6.2%

Education

Less than 9th grade 0.3%
Some HS, no diploma 3.0%
HS graduate 7.2%
Some college, no degree 29.3%
Associate's degree 13.8%
Bachelor's degree 27.8%
Graduate / professional 18.5%
Metric%
HS diploma or higher96.7%
Bachelor's or higher46.3%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool00.0%
Kindergarten00.0%
Elementary school413.8%
High school2275.9%
College / grad school310.3%

Employment

Industry of employment

Arts, food & hospitality 18.4%
Professional & management 17.3%
Retail trade 13.3%
Education & healthcare 12.8%
Construction 12.2%
Information 9.7%
Finance & real estate 6.6%
Agriculture & mining 4.1%
Public administration 3.1%
Transportation & utilities 2.0%
Other services 0.5%

Occupation

Category%
Management, business & arts43.4%
Service13.3%
Sales & office29.1%
Natural resources & construction12.2%
Production & transportation2.0%

Employment type

Type%
Private sector54.6%
Government27.6%
Self-employed17.9%
Unpaid family workers0.0%

Commute

Method%
Drive alone54.1%
Carpool7.1%
Public transit0.0%
Walk23.0%
Work from home15.8%
Other means0.0%
Avg commute (minutes)18.5

Poverty

All people 4.2%
Under 18 years 25.9%
18 and over 3.2%
Married-couple families 1.1%
Female-led households 0.0%

Income support

Source% of households
Social Security64.2%
Retirement income54.0%
Supplemental Security1.9%
Cash public assistance0.0%
Food stamps / SNAP0.0%

Health indicators

Condition%
Obesity31.1%
High blood pressure36.8%
High cholesterol37.1%
Diabetes11.3%
Heart disease7.7%
Stroke3.2%
Asthma8.5%
Arthritis28.6%
Kidney disease3.2%
Pulmonary disease6.4%
Cancer9.0%
Behavior / access%
Smoking11.8%
Binge drinking12.1%
No physical activity18.6%
Less than 7 hrs sleep27.7%
Depression16.3%
Fair or poor health11.8%
Poor mental health10.2%
Poor physical health10.1%
No health insurance10.8%
Visited doctor (checkup)73.7%
Visited dentist72.4%
Cholesterol screening93.0%
Teeth loss8.7%

Veterans & disability

VeteransCount%
Civilian veterans7311.9%
Disability%
Any disability15.9%
Under 180.0%
18–64 years25.0%
65 and over13.0%

Health insurance coverage

Type%
Private insurance59.6%
Public insurance74.3%
No insurance1.4%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only64299.8%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)63298.3%
Born in same state63298.3%
Born in different state15824.6%
Foreign born00.0%
Naturalized citizen111.7%
Not a US citizen872.7%

Ancestry

AncestryCount%
French23035.8%
Italian17727.5%
Polish6910.7%
Arab426.5%
AncestryCount%
Dutch325%
Norwegian152.3%
English20.3%

Technology access

Metric% of households
Computer access50.4%
Internet access95.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 83429

What city is ZIP code 83429 in?

ZIP code 83429 is primarily assigned to Island Park, Idaho.

What county is ZIP code 83429 in?

ZIP code 83429 falls within Fremont County, Idaho.

Does ZIP code 83429 have an older population?

67% of residents in ZIP code 83429 are 65 or older, above the national average of ~17%.

Does ZIP code 83429 have a large retiree population?

64% of households in ZIP code 83429 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 83429?

46% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 83429 have a large veteran population?

12% of civilians in ZIP code 83429 are veterans, above the national average of ~7%.

What timezone is ZIP code 83429 in?

ZIP code 83429 observes the MST timezone.

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