There are 2 Post Offices in Niwot, Colorado, serving a population of 4,445 people in an area of 4 square miles. There is 1 Post Office per 2,222 people, and 1 Post Office per 1 square miles.
In Colorado, Niwot is ranked 285th of 568 cities in Post Offices per capita, and 257th of 568 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Niwot Post Offices.
United States Government - Niwot Post Office 150 Murray Street Niwot, CO Air Cargo, Mailbox Rental, Mailing Service, Postal Services
United States Postal Service 150 Murray Street Niwot, CO Mailing Service, Postal Services