Fort Sedgwick (Sedgwick County, Colorado)

Sedgwick County · Colorado · Indian Wars

Quick BriefFort Sedgwick, originally established as Camp Rankin in 1864, was a U.S. military post that operated until 1871 in Sedgwick County, Colorado. Renamed to honor Civil War general Major General John Sedgwick, it grew into a full military installation with company quarters, stables, and a corral by 1866. The post guarded the Overland Stage Route and telegraph lines against Plains Indian attacks.
Open to visitors
Fort Sedgwick, Colorado

History & Significance

Camp Rankin was established near Julesburg in 1864 with sod huts in response to increased skirmishes with Plains Indians. The post was renamed Fort Sedgwick in honor of Major General John Sedgwick, a Union Army officer.

On January 7, 1865, approximately 1,000 Cheyenne and Sioux warriors attacked the fort in retaliation for the Sand Creek massacre, killing several Native Americans and soldiers, with extensive food supplies looted from nearby Julesburg. Further attacks occurred in 1865, including the burning of Julesburg in February.

In June 1867, General William Tecumseh Sherman ordered George Armstrong Custer and the 7th Cavalry to patrol near Fort Sedgwick and along the South Platte and Smoky Hill Trails. The post was abandoned in May 1871, and soldiers interred there were reburied at Fort McPherson National Cemetery in Nebraska. Fort Sedgwick's history is preserved at the Fort Sedgwick Museum in Julesburg.

Key Facts

StateColorado
LocationSedgwick County
Established1864
Decommissioned1871
War / eraIndian Wars
Current statusMuseum / Historic Site
Coordinates40.93888889, -102.3783333

Map

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🧳 Visiting

What you’ll see when you visit:

  • 1864 military post protecting the Overland Stage Route during Plains Indian Wars
  • Sand Creek massacre context and 1865 Cheyenne and Sioux attack site
  • Museum exhibits in nearby Julesburg covering fort history and era
  • Historical markers at the original fort location near Julesburg
Best time to visitSpring (April-May) and fall (September-October) offer pleasant weather; summer can be hot and dry, while winters are cold across the Colorado plains.
Getting thereNearest commercial air service is Sidney Municipal Airport (SNY), approximately 54 km away; the fort site is located near Julesburg, Colorado.
From the nearest major airportDenver International Airport (DEN)🚗 168 mi by road⏱️ ≈ 2 hr 55 min drive

Sources

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