Thomas J. "Cap" Sipple

Thomas J. "Cap" Sipple (1899-1904)

Was born in Delaware in 1846, his nickname commemorated his service during the Civil War as an officer. He married his wife Flora 1889, and like most of his predecessors, was involved in Boulder County's mining industry, working a claim near Jamestown.

He served as undersheriff to Sheriff O.C. Hansbrough, and ran unsuccessfully for election as a Republican against John A. Jester in 1891. He ran again in 1899 and was elected to Consecutive terms.

Sheriff Sipple died in Boulder in 1908. He and his wife are buried in Boulder's Columbia Cemetery.


Sheriff's Office

Main: 303-441-3600
Alternate: 303-441-4444
Fax: 303-441-4739
Emergency: 911


Sheriff's Headquarters

5600 Flatiron Parkway
Boulder, CO 80301
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Hours: 8:00 a.m.-5:00 p.m. M-F

Lobby Hours: 8:00 a.m.-5:00 p.m. M-F
11 a.m.-4 p.m. M-F (applicant fingerprinting)
8 a.m.-5 p.m.** (sex offender registration)
** By appointment only Tuesdays and Thursdays