All Houston, TX Post Offices receive hundreds of requests each month for the four postmarks popularly known as the “Space” postmarks, These Post Offices are now consolidating the canceling process to one Post Office™ so they can better serve their customers.
The new mailing address for all Houston, TX Space postmark requests has been changed to:
Space Postmark Requestc/o PostmasterSam Houston StationAttn: Mr. Kenneth Cooper1500 Hadley StreetHouston, TX 77002-9998
— Stamp Services, Marketing, 12-17-20
