Unionville, Nevada, is a small unincorporated community and census-designated place (CDP) in Pershing County, located in Buena Vista Canyon on the eastern slope of the Humboldt Range. It sits south of Interstate 80, just west of State Route 400. As of the 2020 census, it had a population of 27.
It is often described as a living ghost town or semi-ghost town, with remnants of its mining past including old mill foundations, a historic cemetery, abandoned structures like a one-room schoolhouse and Mark Twain’s former cabin, and a few occupied homes.
Founding and Early History (1861)
Unionville originated during the early Nevada silver mining boom. In spring 1861, Paiute Indians brought silver ore samples from Buena Vista Canyon to Virginia City. Prospectors followed and confirmed rich deposits. The Unionville (or Buena Vista) mining district was organized shortly afterward, and the town was laid out in May 1861 in the upper part of the canyon.
Initially called Buena Vista (after the canyon) and then Dixie by Southern sympathizers, the name changed to Unionville around July 4, 1861 (or late 1861), as Northern and neutral factions gained dominance amid Civil War tensions. The town was divided into sections (e.g., Lower Town/Dixie for Southerners and Upper Town for Northerners), separated by “Centerville” as a sort of Mason-Dixon line.
In November 1861, Unionville became the county seat of the newly created Humboldt County, serving in that role until 1873.
Boom Years (1863–1870)
Unionville experienced its peak mining boom between 1863 and 1870. Exaggerated reports of riches drew prospectors, including Samuel Clemens (Mark Twain), who arrived in late 1861/1862 intending to strike it rich but left disappointed after limited success. He described the early camp as “eleven cabins and a liberty-pole” in Roughing It.
At its height, the population reached 1,000–1,500. The town stretched over two miles along the canyon and featured over 200 houses, ten stores, nine saloons, six hotels, four livery stables, a brewery, and other businesses. Two newspapers served the area: the Humboldt Register and Silver State. An omnibus line ran hourly between sections of town. The Arizona Mine (discovered 1862) was a major producer, along with others like the Henning and Pfluger. Three stamp mills operated in the early 1870s to process lower-grade ores.
Silver was the primary commodity, with some gold. High-grade ore was sometimes shipped to Wales for processing. The town acted as a supply and distribution center.
Social Issues and Challenges
Like many Western mining towns, Unionville had tensions. In January 1869, an Anti-Chinese League forcibly expelled around 35–50 Chinese residents (miners and laborers), transporting them to Mill City on the railroad. This reflected widespread anti-Chinese sentiment in Nevada; federal indictments followed, but few convictions resulted. Some Chinese miners later returned to work claims in the area into the early 20th century.
Decline (1870s Onward)
By 1870, rich surface ores were largely depleted, and deeper mining proved less profitable. A major fire in 1872 caused significant damage. The completion of the Central Pacific Railroad through the Humboldt Valley (bypassing Unionville and favoring Winnemucca as a trade hub) accelerated the decline. In 1873, the Humboldt County seat moved to Winnemucca. By 1880, the population had dropped to around 200. Mining continued on a smaller scale into the 1880s, but Unionville never recovered its former prominence.
Pershing County was created in 1919 from part of Humboldt County (named after General John Pershing); Unionville fell within the new county but was too small to compete for the county seat (Lovelock became the seat). By 1920, only about 70 people remained.
Modern Unionville
Today, Unionville is a quiet hamlet with a small permanent population (around 20–27). It features scattered ruins, preserved sites like Twain’s cabin, a historic cemetery, and some modern structures. There is limited tourism, including a tourist inn, but no formal local government. It serves as a reminder of Nevada’s early mining history.
Unionville highlights the classic boom-and-bust cycle of Nevada mining towns, shaped by mineral wealth, Civil War politics, transportation changes, and shifting economic centers. Its brief but vibrant history contributed to the development of Humboldt and Pershing counties in the American West.
Nevada State Historic Marker 232
Nevada Historical Marker 232
Reunion in Unionville
SR 400 in in County Park
UnionvilleReunion in Unionville
Across the road and down about 300 feet was the original Unionville school. Built in 1862, this adobe building was the first public structure in the county. Used by such organizations as the Union League, Knights of the Golden Circle, the Masons and the Ancient and Honorable Order of E. Clampus Vitus, it served the community until its demolition in 1871.
Exactly 109 years later, members of the E.C.V. gathered here to hold a reunion in commemoration of this propitious event. To the rear of this marker are the remains of Mark Twain’s cabin. Also a member of E.C.V., he built this structure in 1861 and lived here before moving to Virginia City.