There are 2 Post Offices in Irmo, South Carolina, serving a population of 11,950 people in an area of 7 square miles. There is 1 Post Office per 5,975 people, and 1 Post Office per 3 square miles.
In South Carolina, Irmo is ranked 324th of 496 cities in Post Offices per capita, and 255th of 496 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Irmo Post Offices.
US Post Office 7949 Broad River Road Irmo, SC Mailing Service, Postal Services
United States Postal Service 7821 Saint Andrews Road Irmo, SC Mailing Service, Postal Services