Irwin, ID

ZIP code 83428 is located in the rural town of Island Park, Idaho, nestled near the western border of Yellowstone National Park. This picturesque area is renowned for its stunning natural beauty, with landmarks such as Henrys Lake, Island Park Reservoir, and the Henrys Fork of the Snake River. Visitors often flock to this zip code for its world-class fishing, hiking, and wildlife watching opportunities.