| Description | 
Bangalore | 
Chennai | 
Hyderabad |  Thirvanantha Puram |
| Founded | 1537 A.D | 1640 A.D | 1591 A.D | 800 A.D |
| Area | 484 square kms | 172 square kms | 1,864 square kms | 74 square kms |
| Population | 7.2 million | 6.9 million | 63 lakh | 5.2 lakh |
| Road-Length | 840 kilometres | 1,800 kilometres | 545 kilometres | 292.173 kilometres |
| Public Transport | 1,800 (Number of buses) | 2,200 (Number of buses) | 2,600 buses,56kms of suburban railway track | 510 buses |
| Peak Pollution Levels | SO2:8 Microgram/Meter Cube,
SPM:362 Microgram/Metre Cube | SO2:2.7 Microgram/Meter Cube,
SPM: 683 Microgram/Meter Cube | SO2:3.0 Microgram/Meter Cube
SPM: 597 Microgram/Meter Cube | SO2: less than 30 Microgram/Meter Cube
SPM: less than 30 Microgram/Meter Cube |
| Industrial Load Shedding | 4 hours/day(average) | Nil | Nil | Nil, since October 2000 |
| Residential Load Shedding | 2 hours/day(average) | Nil | Nil | Nil, since October 2000 |
| Power Tariff | Rs. 4.15 per unit(industrial)
Rs. 2.55 per unit(residential) | Rs. 4.15 per unit(industrial)
Rs. 2.30 per unit(residential) | Rs. 4.30 per unit(industrial)
Rs. 2.20 per unit(residential) | Rs. 3.00 per unit(industrial)
Rs. 1.50-2.50 slab rate per unit(residential) |
| Piped water supply per day | 4 hours | One hour | 2 hours every alternate day | 24 hours |
| Cummuting Time | 45 minutes from Jaynagar to M.G Raod | 35 minutes from Chennai Central to Adyar,by auto;and 45 minutes by bus | 1 hour from Abid to Vanasthalipuram | From city bus stand to Technopark:by autorickshaw 15 minutes;by a combination of bus and auto, 30 minutes |
| Cost of Domestic Help | Rs.800 per month | Rs.550 per month | Rs.300 per month | Rs.600 per month |
| Cost of Petrol | Rs.32.17/litre | Rs.30.67/litre | Rs.31.93/litre | Rs.31.33/litre |
| Commercial Real Estate Rates | Rs. 4,000/sq.foot (average) | Rs. 2,500/sq.foot (average) | Rs. 7,000/sq.foot (average) | Rs. 2,000/sq.foot (average rental) |
| Residential Real Estate Rates | Rs. 1,800/sq.foot (average) | Rs. 2,600/sq.foot (average) | Rs. 1,800/sq.foot (average) | Rs. 1,000/sq.foot (average rental) |
| Teledensity (phones per 1000 people) | 104.46 | 155 | 140 | 70 |
