Where are labs 1-256 if there is a 257

I'd hate to think what they do at the ones we don't know about

Thats an average of 5 top secret labs per state.

Or do they all belong to starving artits Who want to grow their own GMO corn

What about building 470??

Building 470, called the “Pilot Plant” or sometimes “Anthrax Tower”, was a notorious seven-story steel and brick building at Fort Detrick in Frederick, Maryland, USA, used in the small-scale production of biological warfare (BW) agents. The building, a Cold War era structure, was transferred from the Department of Defense to the National Cancer Institute-Frederick (a unit of the National Institutes of Health) in 1988, to which it belonged until 2003 when it was demolished.

1

It's probably like SEAL Team 6. There really aren't that many before it. The number was used to throw off our enemies into believing there were more than there actually were.