Regions of the Nuclear Regulatory Commission

This oversight is done on several levels, for example: Headquartered in King of Prussia, Pennsylvania, Region I oversees 15 plants in the north-eastern United States.

Headquartered in Atlanta, Georgia, Region II oversees 18 plants in the south-eastern United States.

Headquartered in Lisle, Illinois, Region III oversees 15 plants in the northern mid-western United States.

Headquartered in Arlington, Texas, Region IV oversees 12 plants in the southern midwestern and the western United States.

[7] On April 4, 1994, NRC Region V was abolished, and the NRC Region IV office in Arlington, Texas was given expanded responsibilities to include the seven states formerly governed by Region V.[8][9] The former NRC Region V office in Walnut Creek remained open as the redesignated Walnut Creek Field Office, supporting resident inspection activities at power plants in the Pacific states of Washington, Oregon and California[8] until October 1, 1998, when the Walnut Creek Field Office was abolished to further reduce costs.