Leland Grove is a city in Sangamon County, Illinois, United States, located adjacent to Springfield.

The city had an initial population of 1,060 people, and later grew by annexing additional subdivisions in the area.

[3] The new city succeeded in paving nine miles of roads in its first year and half, although this led to a significant budget deficit.

[3][4] The first city government, consisting of a mayor, clerk, treasurer and six aldermen, was voted in without opposition on June 20, 1950.

[8] In 2022, the summer kitchen outbuilding from the farmhouse was moved from the site to Washington Park in Springfield.

[11] Subsequent efforts by Springfield to annex Leland Grove and neighboring villages followed in 1960, 1971 and 1976, but were also unsuccessful.

[13] Initially traffic enforcement was handled by residents calling the city government to report if a delivery truck had violated traffic laws, and then a city officer would contact the delivery company to report the violation.

SMTD provides bus service on Route 8 connecting Leland Grove to downtown Springfield and other destinations.