Historedia
AmericasEvent

The Johnson County War breaks out in Wyoming

When
1892
Where
Cheyenne and Douglas; Powder River Country
Episodes
2

The Johnson County War, also called the War on Powder River or Wyoming Range War, was a range war in Northern Wyoming from 1889 to 1893. Its culminating phase came in April 1892, when large cattle ranchers hired gunmen to invade Johnson County against smaller settlers. Historians dispute the war's boundaries: some date it strictly to the April 5–13, 1892 invasion, while others extend it from July 20, 1889 to May 24, 1893. The legacy April 1, 1892 outbreak date is not supported by the supplied passages.

Episodes

  1. March 1892 · Cheyenne and DouglasRecruitment and Preparation

    Cattlemen recruited gunmen from Texas in March 1892 to invade Johnson County, organizing in Cheyenne and cutting telegraph lines to prevent alarm.

  2. April 8–12, 1892 · Powder River CountryThe Invasion and Siege

    Hired gunmen invaded Johnson County, surrounding a ranch on April 8, 1892, leading to a siege that prompted Governor Barber to request federal help.

Background and detail

Background. Competition for land and water rights intensified as homesteaders, known as 'nesters' or 'grangers', moved into Wyoming. Large cattle companies, or 'cattle barons', monopolized open ranges and excluded smaller settlers from annual round-ups. The Maverick Act of 1884 further aggravated tensions by assigning all unbranded cattle to the large ranchers, creating an uneasy relationship that eventually led to violent persecution of alleged rustlers.

Outbreak. By spring 1892, small settlers formed the Northern Wyoming Farmers and Stock Growers' Association in Buffalo. In March, cattlemen recruited gunmen from Texas to invade Johnson County. The group organized in Cheyenne, traveled to Casper, and proceeded by horseback, cutting telegraph lines north of Douglas to prevent alarm. The invasion began in April, with specific dates varying among historians.

Immediate Course. The invasion culminated in a siege at a ranch on April 8, 1892. Governor Barber telegraphed President Harrison for help on April 12. The conflict's chronology is disputed, with some defining it strictly as the April 5–13 invasion, while others extend it from 1889 to 1893. The term 'Johnson County War' was used as early as April 23, 1892.

People involved

Sources

  1. Johnson County War Wikipedia, revision of 2026-10-10

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.