1850History
The first proprietor of Lemon Grove, Robert Allison, arrived in the region in 1850, coming from Sacramento.
1886Architecture
Allison became a director and stockholder of the San Diego and Cuyamaca Railroad in 1886 and built the Allison Flume.
1892History
Allison's son Joseph filed subdivision maps for "Lemon Grove" in 1892.
1928Architecture
Treganza, the lemon was originally built as a parade float for the 1928 Fourth of July Fiesta de San Diego parade, carrying the town's first Miss Lemon Grove, Amorita Treganza, ...
1930History
In 1930, the float was plastered to create a permanent sculpture and displayed near its current location.
1977Government
The city was finally incorporated on July 1, 1977, becoming California's 414th city.
2023History
The median household income in 2023 was $79,278, and the per capita income was $35,402.
2025Government
== Government ==
As of October 2025, the city council includes Mayor Alysson Snow, and council members Yadira Altamirano, Jessyka Heredia, and Jennifer Mendoza.