(FORTUNE Magazine) – Where do the Service 500 live? In 42 states, the District of Columbia, plus a commonwealth. Home ranges from New York, where 71 companies are headquartered, to Puerto Rico, which boasts one, Banponce Corp., the nation's 67th-largest bank. How many of the 500 are in your state? And how do you reach them if you have something to sell or tell them? These tables provide phone numbers for ! the company headquarters. They are also an interesting sociological document. For all the worms in the Big Apple, New York City is by far the most popular service center, followed by Chicago. And some things never change. Hartford is still an insurance city: Eight of the ten service companies headquartered there are in the rainy day business.

CHART: NOT AVAILABLE CREDIT: NO CREDIT CAPTION: THE SERVICE 500 BY STATE WHERE THE HEADQUARTERS ARE