1868History
In 1868, John Rowland and William Workman divided Rancho La Puente, leaving Rowland the eastern half and Workman the western half.
1895History
In 1895, the first U.S.
1908History
In 1908, the post office name was changed to Walnut.
1959Government
The City of Walnut is a general law city incorporated on January 19, 1959.
1960History
== Demographics ==
Walnut first appeared as a city in the 1960 U.S.
2000Infrastructure
reported that Chinese (21.0%) and Mexican (14.6%) were the most common ancestries in the 2000 census.
2008Military
=== Proposed NFL stadium ===
In April 2008, billionaire land developer and co-owner of the Los Angeles Lakers and Kings Edward P.
2009Civil Rights
In March 2009, Walnut filed a lawsuit opposing construction of the stadium, but dropped those charges in September.
2017Infrastructure
According to the city's 2017 Comprehensive Annual Financial Report, the principal employers in the city are:
== Sports ==
=== Mt.
2022History
The City Manager, Tom Weiner, runs the day-to-day operations of the agency, and has served in this role since 2022.
2023History
In 2023, the US Census Bureau estimated that the median household income was $133,762, and the per capita income was $51,555.