National Cryptologic Museum Hours of Operation
Monday - Friday
9:00 a.m. - 4:00 p.m.
Saturdays (1st and 3rd Saturdays of the month)
10:00 a.m. - 2:00 p.m.
Closed Sundays and Federal Holidays
Office - 301-688-5849
Gift Shop - 301-688-6857
Library - 301-688-2145
Fax - 301-688-5847
Email the Museum
Group tours should be scheduled in advance. A minimum of six people is required to schedule a tour.