*Disclaimer: Districts are categorized into three classes based on the sector-wise incentives offered to them. To learn about the sector-wise incentives offered to various district-class, click here.
District Category
A Category Districts (4 districts)
Chengalpattu , Chennai, Kancheepuram and Tiruvallur.
B Category Districts (12 districts)
Coimbatore, Erode, Karur, Krishnagiri, Namakkal, The Nilgiris , Ranipet, Salem, Tiruchirappalli, Tirupattur, Tiruppur, and Vellore.
C Category Districts (22 districts)
Ariyalur, Cuddalore, Dharmapuri, Dindigul, Kallakurichi, Kanniyakumari, Madurai, Mayiladuthurai, Nagapattinam, Perambulur, Pudukkottai, Ramanathapuram, Sivagangai, Tenkasi, Thanjavur, Theni, Thiruvarur, Thoothukudi, Tirunelveli, Tiruvannamalai, Villupuram and Virudhunagar.