City vs city
Ammon vs St. Anthony, Idaho
Ammon has about 4.9 times as many people as St. Anthony. They are about 37 miles apart in a straight line.
The basics
Population
Source: U.S. Census Bureau population estimates (Vintage 2024) · July 1, 2024 estimate
20,095
4,093
County
Source: U.S. Census Bureau and USGS Geographic Names Information System · Checked Oct 3, 2026
Bonneville County
Fremont County
Elevation
Source: USGS Geographic Names Information System · Checked Oct 3, 2026
4,700 ft
5,000 ft
Distance to Boise (straight line)
Source: Straight line between the two town centers (USGS and Census coordinates) · Checked Oct 3, 2026
212 mi
227 mi
Price level (U.S. average = 100)
Source: U.S. Bureau of Economic Analysis regional price parities, all items, for the metro area (via FRED) · 2024 data, released Feb 19, 2026 · Towns outside a metro area use Idaho's statewide figure.
94.4
95.5
Public schools
Source: NCES Common Core of Data, operating public schools · 2024-25 school year
8
7
Work and getting around town
Local businesses listed
Source: Local businesses listed on Treasure Idaho · Updated Oct 1, 2026
20
1
Outdoors
Trails within 15 miles
Source: Trails listed on Treasure Idaho (OpenStreetMap and public land agencies) · Checked Oct 2, 2026
14
4
Things to do within 15 miles
Source: Things to do listed on Treasure Idaho (OpenStreetMap and USGS) · Checked Oct 2, 2026
14
11
Allergies, in a typical year
Wildfire smoke (days a year over AQI 100)
Source: EPA AirData: annual AQI by county · 2021 to 2025 average · St. Anthony has no air monitor in its county and uses Bonneville County.
Low, 2
Low, 2
Only figures both towns have are shown. Counts of communities, builders, jobs, businesses and stays are what Treasure Idaho lists today, not every one in town. Allergy ratings are typical, general guidance, not medical advice; each city page shows how its ratings were worked out.