The Alturas English and Spanish congregations of Jehovah's Witness meet at this Kingdom Hall.
The Alturas English congregation currently serves central and eastern Modoc County and Madeline Plains in Lassen County, in California. Historically, the Alturas congregation has served all of Modoc and Lassen counties, and northern Washoe County, Nevada.
The Alturas Spanish congregation has served all of Modoc and Lassen counties, California, and Lake County, Oregon since about the year 2000.