Ashton ZIP Code List — Fremont County, ID

There is one unique ZIP code in Ashton, Idaho and it is 83420. Area code: 208.

ZIP codes

410.77

sq mi land

4.28

sq mi water

208

area code

Ashton, ID ZIP code map

About Ashton, ID

Ashton, Idaho, is a charming town located in Fremont County, known for its scenic beauty and outdoor recreational opportunities. Nestled in the heart of the Idaho wilderness, Ashton serves as a gateway to some of the state's most picturesque landscapes, including nearby national parks. The town offers a tight-knit community atmosphere and a rich history that reflects the pioneering spirit of the American West.

Location & geography

Ashton is located in eastern Idaho, in close proximity to several other cities, including Rexburg, which is about 25 miles to the south, and Idaho Falls, approximately 40 miles to the southwest. The town covers a vast area with a land size of 410.77 square miles and a water area of 4.28 square miles. The landscape around Ashton is characterized by rolling hills and farmland, making it an attractive destination for outdoor enthusiasts.

Community & economy

The character of Ashton is deeply rooted in its agricultural heritage, with many residents involved in farming and ranching industries. Daily life in Ashton reflects a blend of small-town charm and a strong sense of community, with local events often centered around agriculture and the outdoors. The town also serves as a base for tourists visiting nearby attractions, including the Teton Mountains and Yellowstone National Park.

Transportation

Ashton is accessible via Idaho State Highway 47, which connects the town to the broader Idaho highway system. The nearest major airport is Idaho Falls Regional Airport, situated about 40 miles away, providing regional flights and services for travelers. Local transit options are limited, but the town's small size makes it conducive to biking and walking.

History

Founded in the late 19th century, Ashton became a key area for railroad expansion, facilitating commerce and movement in the region. The economy was historically based on agriculture and logging, which shaped the community's development and resilience. A notable event in Ashton's history is its role as a stagecoach stop, reflecting the town's importance in connecting settlers with emerging markets in Idaho.

Did you know?

One surprising fact about Ashton is that it hosts the annual Ashton Sheep Festival, which celebrates the area's rich sheep ranching tradition. Additionally, the town is located near the world-famous Mesa Falls, a stunning waterfall that attracts numerous visitors each year.

ZIP codes for Ashton, ID (1)

ZIP code	City	County	Map
83420	Ashton	Fremont	View map

Demographics & statistics

2,737

Population

47.2

Median age

$64,787

Median household income

$30,312

Per capita income

$271,700

Median home value

$781

Median monthly rent

82.2%

Home ownership

4.0%

Poverty rate

5.2%

Unemployment

1,163

Housing units

28.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

116

10–14

101

15–19

100

20–24

25–34

232

35–44

203

185

45–54

162

128

55–59

111

123

60–64

108

175

65–74

153

143

75–84

124

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	496	18.1%
18 and over	2,241	81.9%
65 and over	634	23.2%
Median age	47.2 years

Race & ethnicity

White 89.2%

Two or more races 6.2%

Hispanic or Latino 3.9%

Black or African American 0.3%

American Indian / Alaska Native 0.3%

Other race 0.1%

Group	Count	%
White	2,541	89.2%
Two or more races	177	6.2%
Hispanic or Latino	111	3.9%
Black or African American	9	0.3%
American Indian / Alaska Native	8	0.3%
Other race	2	0.1%

Household income

Under $10k 2.0%

$15k–$25k 12.4%

$25k–$35k 1.9%

$35k–$50k 14.2%

$50k–$75k 25.4%

$75k–$100k 16.5%

$100k–$150k 18.3%

$150k–$200k 7.5%

$200k+ 2.0%

Range	% of households
Under $10k	2.0%
$15k–$25k	12.4%
$25k–$35k	1.9%
$35k–$50k	14.2%
$50k–$75k	25.4%
$75k–$100k	16.5%
$100k–$150k	18.3%
$150k–$200k	7.5%
$200k+	2.0%
Median income	$64,787

Housing

Home values

Under $50k 6.5%

$50k–$100k 3.3%

$100k–$150k 9.1%

$150k–$200k 12.0%

$200k–$300k 25.6%

$300k–$500k 32.1%

$500k–$1M 9.3%

$1M+ 2.1%

Housing overview

Metric	Value
Median home value	$271,700
Median rent / month	$781
Owner occupied	82.2%
Renter occupied	17.8%
Vacant	27.6%
Single-family detached	85.0%
Large apartment buildings	0.0%
Mobile homes	12.4%
Median rooms	5.7
Avg household size (owned)	2.71

Year built

Era	%
2020 or later	0.7%
2010–2019	2.7%
2000–2009	10.5%
1990–1999	10.4%
1980–1989	12.6%
1970–1979	19.2%
1960–1969	9.7%
1950–1959	7.5%
1940–1949	6.7%
1939 or earlier	20.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	9.7%
2 bedrooms	21.6%
3 bedrooms	39.8%
4 bedrooms	15.7%
5+ bedrooms	12.5%

Vehicles per household

Vehicles	% of households
No vehicle	0.4%
1 vehicle	21.4%
2 vehicles	31.3%
3 or more	46.9%

Heating fuel

Fuel type	%
Utility gas	1.8%
Electricity	30.4%
Propane / LP gas	42.8%
Fuel oil	10.2%
Wood	12.4%

Households & families

Household type	Count	%
Married-couple family	723	74.8%
Cohabiting couple	29	3.0%
Male householder, no spouse	119	12.3%
Female householder, no spouse	95	9.8%
Households with children under 18	263	27.2%
Households with seniors (65+)	355	36.7%
Average household size	2.79

Marital status

Status	Male	Female
Never married	18.4%	10.5%
Married	73.1%	75.8%
Separated	0.0%	0.4%
Widowed	0.7%	4.0%
Divorced	7.9%	9.3%

Education

Less than 9th grade 4.9%

Some HS, no diploma 1.4%

HS graduate 23.7%

Some college, no degree 28.8%

Associate's degree 12.8%

Bachelor's degree 24.4%

Graduate / professional 4.1%

Metric	%
HS diploma or higher	93.8%
Bachelor's or higher	28.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	2.2%
Kindergarten	18	3.3%
Elementary school	359	66.4%
High school	81	15.0%
College / grad school	71	13.1%

Employment

Industry of employment

Education & healthcare 22.8%

Retail trade 13.9%

Construction 11.6%

Transportation & utilities 11.5%

Agriculture & mining 8.7%

Arts, food & hospitality 8.0%

Public administration 6.0%

Professional & management 5.9%

Wholesale trade 4.6%

Manufacturing 4.3%

Other services 2.0%

Finance & real estate 0.7%

Occupation

Category	%
Management, business & arts	30.4%
Service	18.2%
Sales & office	26.7%
Natural resources & construction	12.8%
Production & transportation	11.9%

Employment type

Type	%
Private sector	70.1%
Government	22.0%
Self-employed	7.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.6%
Carpool	6.6%
Public transit	0.0%
Walk	2.5%
Other means	0.2%
Avg commute (minutes)	20.7

Poverty

All people 4.0%

Under 18 years 4.4%

18 and over 3.9%

Married-couple families 4.7%

Female-led households 0.0%

Income support

Source	% of households
Social Security	40.2%
Retirement income	23.3%
Supplemental Security	1.8%
Cash public assistance	1.1%
Food stamps / SNAP	6.3%

Health indicators

Condition	%
High blood pressure	35.8%
High cholesterol	33.6%
Heart disease	8.5%
Stroke	4.0%
Asthma	9.9%
Arthritis	28.3%
Kidney disease	3.7%
Pulmonary disease	8.4%
Cancer	7.7%

Behavior / access	%
Binge drinking	12.8%
No physical activity	26.0%
Less than 7 hrs sleep	31.2%
Fair or poor health	17.6%
Poor mental health	13.7%
Poor physical health	13.2%
No health insurance	18.7%
Visited doctor (checkup)	70.5%
Visited dentist	59.7%
Cholesterol screening	86.8%
Teeth loss	17.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	155	6.9%

Disability	%
Any disability	18.8%
Under 18	16.5%
18–64 years	13.7%
65 and over	34.2%

Health insurance coverage

Type	%
Private insurance	63.9%
Public insurance	42.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,685	98.1%
Spanish	139	5.2%
Other Indo-European	139	5.2%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,558	93.5%
Born in same state	2,558	93.5%
Born in different state	1,633	59.7%
Foreign born	0	0.0%
Naturalized citizen	179	6.5%
Not a US citizen	61	34.1%

Ancestry

Ancestry	Count	%
French	665	24.3%
Italian	472	17.2%
Arab	163	6%

Ancestry	Count	%
Dutch	102	3.7%
Polish	66	2.4%
English	18	0.7%

Technology access

Metric	% of households
Computer access	35.3%
Internet access	96.0%

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

Frequently asked questions

What is the ZIP code for Ashton, ID?

Ashton, ID has one ZIP code: 83420.

What is the main ZIP code for Ashton, ID?

The primary ZIP code for Ashton, ID is 83420. The city uses area code 208 for phone service.

What county is Ashton, ID in?

Ashton is located in Fremont County, Idaho.

How many ZIP codes are in Ashton, ID?

Ashton, ID has 1 ZIP code.

What ZIP code should I use when mailing a package to a business in downtown Ashton near the Ashton-Atomic City Museum?

All mail to downtown Ashton, including the historic downtown area near the Ashton-Atomic City Museum, uses the ZIP code 83420.

What is the correct ZIP code for properties along the Henry's Fork area in Ashton, a popular fishing destination?

Residences and businesses along the Henry's Fork River in Ashton are located in ZIP code 83420.