Keene, New Hampshire has a population of 23,409, except during the months of July and August when campers flock in for the summer. Keene's violent crime index? 134.4, compared to a national average of 213.6. Most common crime? Theft. Good thing the federal Department of Homeland Security (DHS) gave Keene money to buy a BearCat, an armored counter-attack vehicle. What is Keene using its BearCat for? Good question.