Jefferson County Courthouse

Boulder, United States

Open to visitors

The interior is normally open, possibly ticketed.

Strollie cannot guarantee access — always check before you travel.

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The Jefferson County Courthouse in Boulder, Montana, is a two-story Richardsonian Romanesque structure completed in 1889 and designed by German immigrant architect John Paulsen. Built with local granite and locally manufactured brick, the building features a distinctive square tower crowned with an octagonal spire and two turrets, along with medieval-inspired gargoyles positioned at each corner beneath the eaves. The interior showcases extensive carved woodwork. Added to the National Register of Historic Places in 1980, it remains one of Montana's oldest courthouses still in active use, a testament to both the durability of its construction and the enduring design vision of its 1880s-era planning.