Jalahalli is a locality located in the northern part of Bangalore, which is the capital city of the Indian state of Karnataka. It is situated near National Highway 75 and is about 14 kilometers away from the city center. Jalahalli is primarily a residential area and is home to several residential colonies, including the Jalahalli East and Jalahalli West areas.

Jalahalli is also known for its industrial area, which houses several public sector defense organizations like Bharat Electronics Limited (BEL), Hindustan Aeronautics Limited (HAL), and the Indian Ordnance Factory. These organizations play a crucial role in India's defense sector and are known to produce various types of defense equipment.

The area is well-connected to the rest of the city through various modes of public transport, including buses and trains. The Jalahalli railway station is located nearby, and the Kempegowda International Airport is around 30 kilometers away. Jalahalli is also known for its educational institutions, including the Indian Institute of Science Education and Research (IISER), which is located in the vicinity.