Silao is a city and a notified area in Nalanda district in the Indian state of Bihar. It is known for the excellent Khaja made by its Halwais. It is also the headquarters of a Block, a small administrative unit, by the same name.

Silao is located at 25°04′52″N 85°25′41″E / 25.081°N 85.428°E / 25.081; 85.428. It has an average elevation of 60 metres (196 feet).

As of 2001 India census, Silao had a population of 20,177. Males constitute 52% of the population and females 48%. Silao has an average literacy rate of 52%, lower than the national average of 59.5%: male literacy is 60%, and female literacy is 43%. In Silao, 19% of the population is under 6 years of ag

Banks

• Allahabad Bank
• Madhya Bihar Gramin Bank
• State Bank of India
• Punjab National Bank
• Sub Post Office
• Kisan market, silao
• Union Bank of India