Kamm married Caroline Augusta Gray on 13 September 1859 during the Pig War, on the PS "Eliza Anderson" steamer just outside Fort Hope, Canada. They had one son, Charles Tilton Kamm (1860-1906). Kamm was a Mason, being inducted at age 21 in St. Louis. In Portland, he was affiliated with the Multnomah Lodge in Oregon City, then the Willamette Lodge in Portland. He was also a Knights Templar and a Shriner.