ZIP Code 83421

Zip Code: 83421
Type: POBox
Official USPS city name: Chester
Official USPS State Code: ID
Official State Name: Idaho
ZCTA: TRUE
Population: 356.0
Density: 9.6
Primary Official County Code: 16043
Primary Official County Name: Fremont
Official County Name: Fremont
Official County Code: 16043
Imprecise: FALSE
Military: FALSE
Timezone: America/Boise (03:01 AM Friday, September 25 2026-09-25 (GMT -0600))
Geo Point: 44.00502, -111.53798

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