Zip Code 83420 — Ashton, ID

ZIP Code 83420 is associated with Ashton, ID, in Fremont County. The listed population estimate is 2,580; estimated density is 2.4 people per square mile. Among records with population estimates, it ranks #2 of 6 in Fremont County and #95 of 276 in ID.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (44.060010, -111.322430)

Data MetricLocal Statistic
Postal / Zip Code83420
Primary CityAshton
State / ProvinceID
CountyFremont
Total Population2,580
Population Density2.4 people/sq mi
TimezoneAmerica/Boise

How 83420 Compares

MetricZIP 83420Fremont County recordsID records
Population estimate2,58011,766 (sum)1,933,906 (sum)
Population Density2.4 /sq mi----
County population rank#2 of 6----
State population rank#95 of 276----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in ID

ZIP CodeCityDistancePopulation estimate
ZIP 83421Chester11.5 mi220
ZIP 83424Felt12.5 mi168
ZIP 83436Newdale15.6 mi778
ZIP 83452Tetonia16.4 mi2,237
ZIP 83445Saint Anthony20.3 mi7,975

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →