There are 2 Post Offices in Dahlgren, Illinois, serving a population of 492 people in an area of 1 square miles. There is 1 Post Office per 246 people, and 1 Post Office per square mile.
In Illinois, Dahlgren is ranked 264th of 1547 cities in Post Offices per capita, and 344th of 1547 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Dahlgren Post Offices.
US Post Office 200 South First Street Dahlgren, IL
United States Postal Service 203 South 1st Street Dahlgren, IL Mailbox Rental, Postal Services