Mohave County Courthouse and Jail in Kingman: Arizona Territory on Route 66

The Mohave County Courthouse and Jail: Kingman’s Window Into Arizona Territory

In the heart of Kingman, Arizona’s historic downtown, just a few blocks from Route 66 on Spring Street at North 4th Street, stand two of the most historically significant structures in northwestern Arizona. The Mohave County Courthouse, completed in 1915, and the adjacent county jail, built in 1909, together form a remarkable tangible link to Arizona’s territorial era — the wild and formative years before statehood in 1912. Both buildings were listed on the National Register of Historic Places in 1983, and both tell stories of a frontier community growing up fast, forging its institutions through drama, humor, and genuine hardship.

Where Are the Courthouse and Jail?

Location: Spring Street at North 4th Street, Kingman, AZ 86401 (a short walk north of Andy Devine Avenue/Route 66)

The courthouse and jail are located a few blocks north of the Route 66 alignment through downtown Kingman, within easy walking distance of the Arizona Route 66 Museum at the Powerhouse, Locomotive Park, and the Santa Fe Railroad Depot. Both buildings are part of the Kingman historic district walking tour.

The History of Mohave County

To understand the courthouse and jail, it helps to understand the peculiar and tangled history of Mohave County itself. The Arizona Territory was established in 1862, and two years later Mohave, Pima, Yavapai, and Yuma counties were carved from the vast wilderness. Mohave County has the most labyrinthine early history of the four: its county seat moved no fewer than five times in less than twenty years — from Mohave City (1864) to Hardyville (1867) to Cerbat (1873) to Mineral Park near Chloride, and finally to Kingman in 1887.

The move to Kingman was not without controversy. Territorial newspapers in early 1887 reported outrage among Mineral Park residents, with rampant rumors that the vote to relocate the county seat had been fraudulent. Some accounts claimed that Kingman citizens had raided Mineral Park and carried off the county records. Whatever the truth, Kingman became the permanent county seat, the Mohave County Miner followed from Mineral Park (continuing to publish as the Kingman Miner), and within a decade Mineral Park was nearly abandoned.

The Jail (1909): A Pre-Statehood Relic

The Mohave County Jail was constructed between 1909 and 1910 by the Pauly Jail Building Company of Missouri — established in 1856, the oldest single family-owned correctional facilities contractor in the United States. The jail is one of the oldest cast-in-place concrete structures in Kingman and one of the last free-standing jails built before Arizona achieved statehood in 1912, making it a genuinely rare artifact of the territorial era.

Remarkably, the jail remained in use until 1965, when a new facility in the courthouse basement finally replaced it. Its 56-year service life speaks to either the durability of its construction or the limited municipal budget available for upgrades — probably both.

The jail’s history is not without dark humor. A newspaper account from the fall of 1907 reported that “Because all the prisoners in the Mohave County Jail, grown tired of the sameness of the menu, and their surroundings, walked away a short time ago. All of the fugitives face additional charges for the jail break. None of the escapees have yet been caught.” The jail’s reputation for insecurity was, apparently, well established even before the current building was completed. The county’s previous jail infrastructure had been similarly porous.

The Hanging of 1907

The courthouse grounds witnessed one of Arizona Territory’s most dramatic criminal cases. On January 19, 1907, C.C. Leigh was executed in the yard of the Mohave County Jail — reportedly the only hanging ever carried out on the courthouse square. Leigh had murdered his mistress in Goldroad (a mining camp now in ruins along Route 66 near Sitgreaves Pass) in September 1905. The case generated national headlines throughout Leigh’s two-year legal battle, and his execution drew enormous community attention. As the death warrant was read to him, the previously defiant Leigh reportedly fainted and had to be held upright as the noose was adjusted.

The Courthouse (1915): Neo-Classical Idealism in the Desert

The current Mohave County Courthouse, completed in 1915, was constructed just three years after Arizona achieved statehood — and its architectural ambitions reflect the new state’s desire to project civic dignity and permanence. The building has been deemed significant by historic preservationists “for its association with the national trend for construction of civic buildings in the Neo Classic style at the turn of the twentieth century.”

The Neo-Classical courthouse style was promoted nationally by the 1893 World’s Columbian Exposition in Chicago as a statement of democratic ideals, and Kingman’s courthouse embodied this ideology with particular relevance: Arizona had only achieved statehood two years before completion. The building’s imposing columns and classical proportions announced that this frontier territory had become a proper state, governed by the same civic traditions as the rest of the nation.

The World War I Memorial

Among the distinctive features of the Mohave County Courthouse is a unique World War I memorial — one that has its own dramatic story. The original memorial included a Colt 1895 machine gun, which was stolen at some point after installation. On June 29, 2019, a rededication ceremony commemorating the 101st anniversary of the Battle of Belleau Wood included the replacement of the stolen gun with a bronze replica sculpted by Sedona artist Clyde Ross Morgan. The story of the missing machine gun and its eventual replacement is itself a small but telling piece of Kingman’s layered history.

Visiting the Courthouse and Jail

Both buildings are part of the Kingman historic district and are included on the self-guided, narrated walking tour developed by Kingman Main Street in partnership with Route 66 historian Jim Hinckley. QR codes on plaques throughout the historic district link to audio narration by Hinckley, providing rich historical context at each stop. The courthouse remains an active county government building. The old jail currently serves as storage, with plans by the Mohave Museum of History and Arts to eventually open it for tours.

Both structures are visible and photographable from the public street, and their architectural contrast — the utilitarian concrete block of the 1909 jail versus the dignified Neo-Classical courthouse of 1915 — speaks volumes about the six years of growth and aspiration that separated their construction.

Tips for Visiting

Download the Kingman Main Street walking tour app or pick up a brochure at the Arizona Route 66 Museum before starting your historic district walk.
The Mohave Museum of History and Arts at 400 W. Beale Street provides excellent context for the courthouse’s history and the broader story of northwestern Arizona.
The courthouse and jail are most photographically rewarding in morning light, when the sun illuminates the building facades from the east.
Look for the World War I memorial with the bronze replica Colt 1895 machine gun on the courthouse grounds.
The full historic district walk also includes the Santa Fe Depot, Locomotive Park, Hotel Beale, and the Arizona Route 66 Museum — allow at least two hours for a thorough exploration.

Final Thoughts on the Mohave County Courthouse and Jail

The Mohave County Courthouse and Jail are not roadside attractions in the conventional Route 66 sense — they won’t offer you a root beer float or a kitschy souvenir. What they offer instead is something rarer: a direct physical connection to the rough, ambitious, sometimes comic, and occasionally tragic process by which this corner of the American frontier became a functioning civil society. For travelers interested in the deeper history beneath Route 66’s neon surface, these buildings are among the most rewarding stops in all of Kingman and one of the finest history experiences on Arizona’s Mother Road.