Strip clubs per capita....

Oregon has 93 such clubs, or 2.6 per 100,000 residents — second only to West Virginia's 53 clubs, or 2.9 per 100,000 residents.

In other words, you only need a population of 30-40,000 to support such an establishment. I figured the base would need to be higher. No word on what the national average is, and I'd love to see a "red-state/blue-state" breakdown...