Saint Anthony ZIP Code List — Fremont County, ID

There is one unique ZIP code in Saint Anthony, Idaho and it is 83445. Area code: 208.

ZIP codes

300.74

sq mi land

2.45

sq mi water

208

area code

Saint Anthony, ID ZIP code map

About Saint Anthony, ID

Saint Anthony, Idaho, is a quaint city located in the southeastern part of the state. It serves as the county seat of Fremont County and is known for its rich history and beautiful landscapes. With a welcoming community and a quiet atmosphere, Saint Anthony is an appealing place to live and visit.

Location & geography

The city is situated at a geographical point that allows easy access to the stunning natural beauty of Idaho. It is surrounded by other cities including Rexburg, which is about 20 miles to the southwest, and Idaho Falls, approximately 35 miles to the west. Saint Anthony covers a land area of 300.74 square miles and has a small water area of 2.45 square miles, providing a vast landscape for various outdoor activities.

Community & economy

Saint Anthony possesses a friendly, small-town character that fosters close-knit relationships among its residents. The local economy is primarily driven by agriculture, tourism, and service industries, contributing to a balanced daily life for its inhabitants. Residents enjoy a slower pace while partaking in outdoor activities and community events throughout the year.

Transportation

Transportation in Saint Anthony is facilitated by several highways, including U.S. Route 20, which connects the city to neighboring towns and cities. The nearest major airport is Idaho Falls Regional Airport, located about 35 miles away. Public transportation options are limited, making personal vehicles the primary mode of transit.

History

Saint Anthony was founded in the late 19th century and has since developed a rich history influenced by the surrounding agricultural landscape. Key industries have historically revolved around farming and ranching, with the town playing an essential role in supporting local agricultural ventures. Notable events include the historic development of the city as a railway hub, which contributed significantly to its early growth.

Did you know?

One surprising fact about Saint Anthony is that it is home to the famous Saint Anthony Sand Dunes, a popular destination for outdoor recreation enthusiasts. Additionally, the city is known for its local events, including the annual Fremont County Fair, which attracts visitors from surrounding areas.

ZIP codes for Saint Anthony, ID (1)

ZIP code	City	County	Map
83445	Saint Anthony	Fremont	View map

Demographics & statistics

7,213

Population

35.5

Median age

$60,352

Median household income

$23,672

Per capita income

$210,900

Median home value

$724

Median monthly rent

79.4%

Home ownership

15.3%

Poverty rate

4.0%

Unemployment

1,973

Housing units

15.8%

Bachelor's or higher

Age distribution

Male Female

204

Under 5

178

270

5–9

236

294

10–14

257

397

15–19

347

215

20–24

188

530

25–34

462

507

35–44

443

472

45–54

413

211

55–59

184

239

60–64

209

279

65–74

244

160

75–84

140

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,914	26.5%
18 and over	5,299	73.5%
65 and over	957	13.3%
Median age	35.5 years

Race & ethnicity

White 79.7%

Hispanic or Latino 8.1%

Other race 6.5%

Two or more races 2.9%

American Indian / Alaska Native 2.2%

Black or African American 0.4%

Asian 0.1%

Group	Count	%
White	6,257	79.7%
Hispanic or Latino	636	8.1%
Other race	511	6.5%
Two or more races	229	2.9%
American Indian / Alaska Native	175	2.2%
Black or African American	34	0.4%
Asian	7	0.1%

Household income

Under $10k 3.9%

$10k–$15k 5.0%

$15k–$25k 7.7%

$25k–$35k 12.0%

$35k–$50k 14.1%

$50k–$75k 21.2%

$75k–$100k 14.1%

$100k–$150k 15.6%

$150k–$200k 5.2%

$200k+ 1.4%

Range	% of households
Under $10k	3.9%
$10k–$15k	5.0%
$15k–$25k	7.7%
$25k–$35k	12.0%
$35k–$50k	14.1%
$50k–$75k	21.2%
$75k–$100k	14.1%
$100k–$150k	15.6%
$150k–$200k	5.2%
$200k+	1.4%
Median income	$60,352

Housing

Home values

Under $50k 14.5%

$50k–$100k 4.9%

$100k–$150k 11.4%

$150k–$200k 16.0%

$200k–$300k 22.5%

$300k–$500k 24.4%

$500k–$1M 6.1%

$1M+ 0.2%

Housing overview

Metric	Value
Median home value	$210,900
Median rent / month	$724
Owner occupied	79.4%
Renter occupied	20.6%
Vacant	11.0%
Single-family detached	72.4%
Large apartment buildings	0.1%
Mobile homes	21.3%
Median rooms	6.6
Avg household size (owned)	3.23

Year built

Era	%
2020 or later	0.0%
2010–2019	3.9%
2000–2009	15.6%
1990–1999	6.7%
1980–1989	12.6%
1970–1979	20.2%
1960–1969	9.4%
1950–1959	5.2%
1940–1949	8.6%
1939 or earlier	17.8%

Bedrooms

Size	% of units
No bedroom (studio)	2.2%
1 bedroom	2.9%
2 bedrooms	23.7%
3 bedrooms	38.7%
4 bedrooms	24.1%
5+ bedrooms	8.4%

Vehicles per household

Vehicles	% of households
No vehicle	2.7%
1 vehicle	17.3%
2 vehicles	36.0%
3 or more	43.9%

Heating fuel

Fuel type	%
Utility gas	38.0%
Electricity	27.3%
Propane / LP gas	22.1%
Fuel oil	0.7%
Wood	11.5%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	1,350	62.8%
Cohabiting couple	128	6.0%
Male householder, no spouse	257	12.0%
Female householder, no spouse	415	19.3%
Households with children under 18	831	38.7%
Households with seniors (65+)	622	28.9%
Average household size	3.14

Marital status

Status	Male	Female
Never married	32.3%	23.1%
Married	49.0%	55.3%
Separated	3.2%	0.6%
Widowed	1.4%	8.4%
Divorced	14.1%	12.6%

Education

Less than 9th grade 3.5%

Some HS, no diploma 8.6%

HS graduate 36.1%

Some college, no degree 23.4%

Associate's degree 12.5%

Bachelor's degree 12.6%

Graduate / professional 3.2%

Metric	%
HS diploma or higher	87.8%
Bachelor's or higher	15.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	64	3.2%
Kindergarten	108	5.4%
Elementary school	845	42.1%
High school	526	26.2%
College / grad school	465	23.2%

Employment

Industry of employment

Education & healthcare 17.9%

Retail trade 10.7%

Arts, food & hospitality 10.4%

Construction 10.3%

Manufacturing 9.7%

Public administration 8.2%

Transportation & utilities 8.0%

Professional & management 7.7%

Agriculture & mining 5.6%

Other services 4.4%

Finance & real estate 3.8%

Information 2.5%

Wholesale trade 0.6%

Occupation

Category	%
Management, business & arts	23.6%
Service	14.8%
Sales & office	20.8%
Natural resources & construction	16.8%
Production & transportation	23.9%

Employment type

Type	%
Private sector	76.0%
Government	16.3%
Self-employed	5.3%
Unpaid family workers	2.3%

Commute

Method	%
Drive alone	73.8%
Carpool	14.2%
Public transit	0.3%
Walk	1.2%
Other means	1.4%
Avg commute (minutes)	24.3

Poverty

All people 15.3%

Under 18 years 17.5%

18 and over 14.5%

Married-couple families 10.4%

Female-led households 17.7%

Income support

Source	% of households
Social Security	37.5%
Retirement income	25.2%
Supplemental Security	8.0%
Cash public assistance	2.1%
Food stamps / SNAP	11.4%

Health indicators

Condition	%
High blood pressure	29.5%
High cholesterol	29.0%
Heart disease	6.1%
Stroke	2.9%
Asthma	9.6%
Arthritis	22.4%
Kidney disease	2.7%
Pulmonary disease	6.3%
Cancer	5.9%

Behavior / access	%
Binge drinking	15.4%
No physical activity	22.8%
Less than 7 hrs sleep	31.5%
Fair or poor health	14.1%
Poor mental health	14.2%
Poor physical health	10.9%
No health insurance	18.6%
Visited doctor (checkup)	67.0%
Visited dentist	61.9%
Cholesterol screening	84.2%
Teeth loss	15.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	347	6.5%

Disability	%
Any disability	21.3%
Under 18	9.9%
18–64 years	20.4%
65 and over	46.5%

Health insurance coverage

Type	%
Private insurance	54.7%
Public insurance	42.1%
Uninsured under 19	6.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	6,831	94.7%
Spanish	276	4.0%
Other Indo-European	276	4.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,838	94.8%
Born in same state	6,821	94.6%
Born in different state	4,354	60.4%
Foreign born	17	0.2%
Naturalized citizen	375	5.2%
Not a US citizen	29	7.7%

Ancestry

Ancestry	Count	%
French	2,055	28.5%
Italian	403	5.6%
Arab	334	4.6%

Ancestry	Count	%
Dutch	297	4.1%
Polish	196	2.7%
English	171	2.4%

Technology access

Metric	% of households
Computer access	29.8%
Internet access	93.7%

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

Frequently asked questions

What is the ZIP code for Saint Anthony, ID?

Saint Anthony, ID has one ZIP code: 83445.

What is the main ZIP code for Saint Anthony, ID?

The primary ZIP code for Saint Anthony, ID is 83445. The city uses area code 208 for phone service.

What county is Saint Anthony, ID in?

Saint Anthony is located in Fremont County, Idaho.

How many ZIP codes are in Saint Anthony, ID?

Saint Anthony, ID has 1 ZIP code.

What is the ZIP code for downtown Saint Anthony, Idaho?

Downtown Saint Anthony, Idaho is located in ZIP code 83445, which serves as the primary ZIP code for the city's central business district and municipal area.

What ZIP code should I use for mailing to addresses near the Fremont County Fairgrounds in Saint Anthony?

The Fremont County Fairgrounds in Saint Anthony is located within ZIP code 83445, which covers all residential and commercial areas throughout the city.