Jaeger City, then in San Diego County, California, was the first and largest settlement near the fort until 1862. It began as a stockade for defense of the ferry and its operators against the Quechan, and a collection of tents. It was a station of the San Antonio-San Diego Mail Line from 1857 to 1860. At its height it consisted of the Fort Yuma Station of the Butterfield Overland Mail and its local office, a hotel, two blacksmiths, two stores and other dwellings. Colorado City begun in 1853 lay across the river and Arizona City lay a mile above it across from Fort Yuma.
Jaeger City was destroyed, along with Colorado City across the river, in the Great Flood of 1862. Jaeger City was never rebuilt. Jaeger's Ferry was rebuilt and Colorado City also, on higher ground as part of Arizona City, later renamed Yuma, Arizona, in 1873, and the ferry relocated there across from the fort.
The site today
The site is located southeast of Winterhaven, California. All trace of the settlement has been washed away by the flooding of the river since 1862.
Los Angeles – Located 12 miles southeast of Cahuenga Station in the pueblo of Los Angeles. The 2nd Division headquarters was in a brick building, consisting of an office, blacksmith shop, stables and sheds.
Sackett's Wells – a later station, located 171⁄2 miles east southeast of Carrizo Creek Station, 15 miles west northwest of Indian Wells.
Indian Wells Station – Located 32 miles southeast of Carisso Creek, near present day Heber, no water except at station.
New River Station – a later station, located 15 miles southeast of Indian Wells Station, in Baja California, 14 miles west of Alamo Mocho Station, in present day Mexicali.
Alamo Mocho Station – Located south of the Mexican border in Baja California, 38 miles east of Indian Wells Station, no water except at station.
Gardner's Wells Station – a later station, located south of the Mexican border in Baja California, 9 miles east of Alamo Mocho and 9 miles west of Seven Wells.