There are 2 Post Offices in Crystal Lake, Illinois, serving a population of 40,331 people in an area of 19 square miles. There is 1 Post Office per 20,165 people, and 1 Post Office per 9 square miles.
In Illinois, Crystal Lake is ranked 1,083rd of 1547 cities in Post Offices per capita, and 1,086th of 1547 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Crystal Lake Post Offices.
United States Postal Service 301 East Congress Parkways Crystal Lake, IL Mailbox Rental, Mailing Service, Postal Services
Usps 301 East Congress Parkways Crystal Lake, IL