Colorado
6-3-25
Niwot Post Office, 150 Murray St., 80544-9997 — Temporarily closed May 23 through June 29, 2025. During this closure, customers mail and retail services will be offered at the Valmont Post Office, 2995 55th St., Boulder, 80301-9998. Window service hours are Monday through Friday, 9 a.m. to 6 p.m., Saturday 10 a.m. to 2 p.m. Customers are reminded to bring proper photo identification for mail and package pickups.