Location : Southern Karnataka                     Area in Sq.Kms : 10,598 
Percent of State's Area : 5.53                      Population in 1991 : 2,305,819 
Rank : 9                                                      Numder of Taluks : 10 
Number of Grama Panchayats : 325             Number of Taluk and Urban 
Distance from Bangalore :  70kms               Agglomerations : 12 

Important jatra : 

Place	Month	Deity/Saint	No of days	Approximate attendence
Siddaganga	February	Siddhalingeshwara	10	50,000
Yadiyur	April	Siddhalingeshwara	7	50,000

Tumkur is the district headquarters.It is called 'Tummugere' in a 10th Century record.The oldest temple here is Lakshminarayana built in 1560.It came under Mysore during the 17th century when a Maruti temple was built.Nearby Kyatsandra has the siddhaganga Kshetra on a hill.There is s Veerashaiva Matha at Siddhaganga known for its unique educational services.It runs a free hostel feeding nearly 5000 students.It also runs many educational institutions including an engineering college.Siddhaganga has the samadhi of Siddhalingeshwara, a Veerashaiva saint and there is a natural spring called Siddhaganga.