Find the last 4 digits (ZIP+4) for an address in 83420

ZIP 83420, Ashton, ID is filled in. Just type the street address.

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ZIP Code 83420 – Ashton, ID

Ashton, Idaho · Fremont County · Mountain time

ZIP code83420
CityAshton
StateIdaho
CountyFremont County
Population2,580
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area410.77 sq mi
Center (lat, long)44.0595, -111.3248

Area codes in this area

208986

These are the area codes that most often serve ZIP 83420 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

83421 Chester · 11.7 mi83424 Felt · 12.6 mi83436 Newdale · 14.8 mi83452 Tetonia · 20 mi83451 Teton · 20.3 mi83445 Saint Anthony · 20.9 mi83438 Parker · 22.6 mi83414 Alta · 23.6 mi

About ZIP 83420

ZIP code 83420 is assigned to Ashton, Idaho. It lies in Fremont County. Its Census area covers about 410.77 square miles of land. The closest neighboring ZIP is 83421 (Chester), about 11.7 miles away.

Every address in 83420 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources