Zip Code 83428 — Irwin, ID

ZIP Code 83428 is associated with Irwin, ID, in Bonneville County. The listed population estimate is 576; estimated density is 0.9 people per square mile. Among records with population estimates, it ranks #7 of 10 in Bonneville County and #193 of 276 in ID.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (43.383300, -111.160930)

Data MetricLocal Statistic
Postal / Zip Code83428
Primary CityIrwin
State / ProvinceID
CountyBonneville
Total Population576
Population Density0.9 people/sq mi
TimezoneAmerica/Boise

How 83428 Compares

MetricZIP 83428Bonneville County recordsID records
Population estimate576130,795 (sum)1,933,906 (sum)
Population Density0.9 /sq mi----
County population rank#7 of 10----
State population rank#193 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 83449Swan Valley10.4 mi273
ZIP 83455Victor15.4 mi6,173
ZIP 83443Ririe21.9 mi1,364
ZIP 83422Driggs22.5 mi3,847
ZIP 83285Wayan24.7 mi80

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 →