From a New York Times column by Peter Coy headlined “More Fun Facts About Jobs and Cities and States”:

I think I got more emails about my Monday newsletter — “Why Are There So Many Shampooers in New Jersey?” — than about anything else I’ve written since I started this newsletter in August. A large fraction of them concerned Maryland; Ocean City, N.J.; and shampooers.

So, first, my apologies for leaving Maryland off the list of states and territories in the first table. It was an oversight that we’ve fixed on the web. To fill in the blank: The occupation in Maryland with the highest location quotient is astronomer. That means astronomers are disproportionately common in Maryland’s work force, more so than any other occupation.