It will vary on the mail type. Mail from Chicago, IL to New York City, NY can take 1-3 business days.
Priority Mail Express 1-Day
Priority Mail 2-Day
First-Class Mail® Stamped Letter (3 days)
You may calculate expected delivery date and domestic shipping costs using Usps.com's Postage Price Calculator.
For inquiries you may call USPS Customer Care Center on 1-800-ASK-USPS® (1-800-275-8777). Lines are available Monday to Friday from 8am to 8:30pm ET and Saturday from 8am to 6pm ET.
Tip! Make smart choices. Here's how mailing services can be combined to meet your needs shared by USPS.