Lathrop, in San Joaquin County, California, United States, is a city located 9 miles (14 km) south of Stockton. The 2010 Census of the United States recorded that the population of Lathrop was 18,023. The town is located at the junction of Interstate 5 and SR 120 in the San Joaquin Valley in Northern California.
When the transcontinental railroad was extended up to that point around 1868, Lathrop was platted. Since 1871, a post office has been in operation at Lathrop. The town was named after Jane Stanford, née Lathrop, Leland Stanford’s wife.
The San Joaquin River Bridge at Mossdale crossing at Lathrop was completed by Western Pacific on September 6, 1869, four months after the golden spike ceremony of the first transcontinental railroad at Promontory Summit. The last connection of the transcontinental railroad to the Pacific coast was finally completed, with the first train from Sacramento arriving at the Alameda Wharf in San Francisco Bay that evening.
On August 14, 1889, at the train station in Lathrop, former California Chief Justice David S. Terry attacked United States Supreme Court Justice Stephen J. Field. United States Marshal David Neagle (formerly assigned to Tombstone, Arizona), Field’s bodyguard, shot and killed Terry. The events culminated in the In re Neagle decision of the United States Supreme Court, which extended immunity from state prosecution to federal officers operating within the scope of their federal authority.