The main purpose of this legislation is to require the United States Postal Service to assign a unique ZIP Code specifically for Wheatfield, New York. The objective is to improve mail delivery and address identification for residents and businesses in that area. The key provision of this legislation mandates that the Postal Service must establish this unique ZIP Code within 270 days after the law is enacted. This means that once the law is passed, the Postal Service has a set timeframe to complete the task. This legislation affects the residents and businesses of Wheatfield, New York.