Niland customers via a mobile USPS unit, which provides mail and retail services at the Niland Fire Department on Mondays, Wednesdays, and Fridays from 11 a.m. to 3 p.m. Niland customers can collect their mail on Tuesdays and Thursdays at the Calipatria Post Office from 10:00 a.m. to 1 p.m. and 2 p.m. to 4 p.m. Customers are reminded to bring proper photo identification for mail and package pickups.