Los Alamos County 2019 property tax bills were mailed earlier in November. The first half of property taxes will become delinquent after Tuesday, Dec. 10. Payment must either be made in person at the Customer Care Center by 4:00 p.m. on Dec. 10 or postmarked by midnight that same day to avoid late payment penalty and interest charges.
The Customer Care Center is located in the Municipal Building lobby at 1000 Central Avenue. They are open from 8 a.m. to 4 p.m. Monday through Friday from 8:00 a.m. Payments should be mailed to P. O. Box 99, Los Alamos, NM 87544.