Idaho · Census place 1671020

St. Anthony, Idaho

St. Anthony is a city in Fremont County, Idaho with an estimated 4,093 residents on July 1, 2024. It is the 40th largest of 86 incorporated places of 1,000+ people in the state.

Population 2024: 4,093; #40 of 86 in Idaho
Change since 2020: +10.4%; +386 people
Land area: 1.9 sq mi; + 0.04 sq mi water
Density: 2,121 / sq mi; State median 2,389

Orange pin: St. Anthony. Shaded: its county. Dark pin: Boise.

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Tools and pages that start from St. Anthony

St. Anthony population, 2020 to 2024

St. Anthony added 386 residents from July 2020 to July 2024, a change of +10.4%. In the latest year it moved by +48.

July 1 estimates. The April 2020 estimates base was 3,696. The axis starts above zero so yearly changes are visible.

St. Anthony covers 1.93 square miles of land and 0.04 of water, for 2,121 people per square mile of land. The median Idaho place of 5,000+ has 2,389, so St. Anthony is less dense than the typical town.

What county St. Anthony is in

All of St. Anthony's residents live in Fremont County, which had 14,399 residents in 2024. St. Anthony holds 28.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in St. Anthony

1 ZIP Code Tabulation Area (ZCTA) overlaps St. Anthony by at least 10% of the ZCTA's or the city's land: 83445. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where St. Anthony is

The Census internal point of St. Anthony is at 43.966100, -111.684500. Boise, the capital, is 227.2 miles W in a straight line. The nearest larger place is Rexburg, ID (40,695 people), 11.2 miles away. The nearest city of 100,000 or more is Billings, MT, 198.4 miles away.

Internal point

Decimal: 43.966100, -111.684500
DMS: 43°57'57.96"N 111°41'4.20"W
UTM: 12N 445089.5E 4868335.4N
Geohash: 9xbd4ecc4
Plus code: 85MCX888+C5

Daylight in St. Anthony

At 43.97° N, St. Anthony gets about 15 h 29 min of daylight around the June solstice and 8 h 53 min around the December solstice, a swing of 6 h 36 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near St. Anthony

The eight nearest incorporated places of 1,000+ in Idaho, measured between internal points. The closest is Sugar City, 7.2 miles away, with 2,395 people.

Questions people ask

What is the population of St. Anthony, ID?

4,093 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 386 (10.4%) from 3,707 in July 2020.

What county is St. Anthony in?

Fremont County. All of its residents live in that county.

What ZIP codes cover St. Anthony?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 83445.

How far is St. Anthony from Boise?

227.2 miles (365.7 km) in a straight line, heading W from St. Anthony.

What is the nearest larger city to St. Anthony?

Rexburg, ID, with 40,695 residents, 11.2 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

How every number is computed: methodology. Spotted a wrong figure? Report an error.