Arizona’s nine major military installations have a $9.1 billion economic impact, according to a study released June 21 by Gov. Janet Napolitano.

The study by the Maguire Co. and ESI Corp. using 2005 figures found that the more than 96,000 military, civil service, contractors and others employed through the installations totals more than the top five largest employers combined.

Besides the economic impact, people assigned to the installations provide $400 million a year to the state through a variety of taxes.

Fort Huachuca has the biggest impact, $2.38 billion annually with nearly 27,000 employees. Luke Air Force Base near Glendale was second on the list with an economic impact of $2.17 from 22,374 employees. Tucson’s Davis-Monthan Air Force Base was No. 3 at $1.75 billion and 19,179 employees.