It's a once-in-a-century event known as Grafton ZIP Code Day 53024

GRAFTON, Wis. (CBS 58) -- It's ZIP Code Day in Grafton. It's an event won't happen again in the village for 100 years.

To honor the day, the Grafton Area Chamber of Commerce is hosting an event at Paramount Plaza. There will be 20 vendors, 53024 swag, giveaways and items to purchase.

The event runs from 4 p.m. to 7 p.m. You have until 6 p.m. to participate in the scavenger hunt through the chamber. Once completed you'll be entered into a raffle to win $530.24.