There are 2 Post Offices in Castle Rock, Colorado, serving a population of 57,274 people in an area of 34 square miles. There is 1 Post Office per 28,637 people, and 1 Post Office per 16 square miles.
In Colorado, Castle Rock is ranked 379th of 568 cities in Post Offices per capita, and 379th of 568 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Castle Rock Post Offices.
US Post Office 4612 Milestone Lane Castle Rock, CO Mailing Service, Postal Services
United States Postal Service 300 East Miller Court Castle Rock, CO Mailing Service, Postal Services