(i) The reasons for the relative success of Tamil Nadu lie in extending social policies to cover most of the population.
(ii) For instance the Public Distribution System, midday meals and public health infrastructure have near-universal coverage.

Coimbatore is referred to as "the pump city" as it supplies two thirds of India's requirements of motors and pumps. The city is one of the largest exporters of Jewellery, wet grinders and auto components and the term "Coimbatore Wet Grinder" has been given a geographical indication.

Thoothukudi is known as "Gateway of Tamil Nadu" because Thoothukudi is the major chemical producer in the state.

Coimbatore is also called as "the pump city" because it supplies two thirds of India's requirement of motor and pumps.

Developed economies are those countries which are Industrialised utilised their resources efficiently and have high per capita income.

Maharashtra has the highest number of internet subscribers in the country at 29 million, followed by States like Tamil Nadu, Andhra Pradesh and Karnataka.
According to government data, India had a total of 342.65 million internet subscribers at the end of March, 2016. Tamil Nadu had 28.01 million subscribers, while its neighbours Andhra Pradesh and Karnataka had 24.87 million and 22.63 million, respectively.

Tamil Nadu ranks third in cement production in India (First Andhra Pradesh, Second Rajasthan). Among 10 largest cement companies in India as on 2018, Ramco Cement and India Cement find prominent place. And also Tamil Nadu stands second in number of cement plants with 21 units against 35 units in Andhra Pradesh.

Tamil Nadu accounts for 30 percent of leather exports and about 70 percent of leather production in the country. Hundreds of leather and tannery industries are located around Vellore, Dindigul and Erode. Every year the State hosts the India International Leather Fair in Chennai.

Maharashtra has the highest number of internet subscribers in the country at 29.47 million followed by states like Tamil Nadu, Andra Pradesh and Karnataka. According to government data, India had a total of 342.65 million internet subscribers at the end of March 2016. Tamil Nadu had 28.01 million subscribers while its neighbours Andra Pradesh and Karnataka had 24.87 million and 22.63 million respectively.

The Micro, Small and Medium Enterprises are defined under the MSME Act 2006. The enterprises based on the investment in plant, machinery and equipment (excluding land and building).
Tamil Nadu accounts of 1507% Micro, Small and Medium Enterprises (highest among states) with 6.89 lakhs registered MSMEs. Producing over 8000 varieties of product for a total investment of more than Rs.32,008 crores.
MSMEs produce a wide variety of products in almost all sectors. The prominent among them are the engineering, electrical, chemical, plastics, steel, paper, matches, textiles, hosiery and garment sector. Around 15.61 lakh entrepreneurs have registered providing employment opportunity to about 99.7 lakh persons with total investment of Rs.1,68,331 crores.

Banking, insurance, energy, transport and communications fall under tertiary sector.i.e., services.
Banking: In Tamil Nadu, Nationalised banks account for 52% with 5,337 branches, Private Commercial Banks 30% (3,060) branches, State Bank of India and its associates 13(1,364), Regional Rural Banks 5% (537) branches and the remaining 22 foreign bank branches.
Education:
(a) School Education: Tamil Nadu is grouped among high Gross Enrolment Ratio (GER) States. It ranks third next only to Kerala (81%)and Himachal Pradesh (74%). The all India average is 43%and the world average is 59%.
(b) Higher Education: In Gross Enrolment Ratio under higher education (Tertiary level) Tamil Nadu continues to be at the top level well ahead of other states. The GER is 46.9% in Tamil Nadu which is far higher against national average and all other States.
Tamil Nadu has 59 Universities, 40 Medical colleges, 517 Engineering colleges, 2,260 Arts and Science colleges, 447 Polytechnics and 20 dental colleges. Tamil Nadu produces nearly four lakh engineering and polytechnic students every year, the highest in the country.
Educational Loans: As far as educational loans disbursed by Public Sector Banks under priority sector are concerned, 20.8% of the total amount was disbursed in Tamil Nadu between 2013-14 and 2015-16.
Health: Tamil Nadu has a three-tier health infrastructure comprising hospitals, primary health centres, health units, community health centres and sub-centres. As of March 2015, the State had 34 district hospitals, 229 sub-divisional hospitals, 1,254 primary health centres, 7,555 Sub-centres and 313 community health centres.
Communication: Maharashtra has the highest number of internet subscribers in the country at 29.47 million, followed by States like Tamil Nadu, Andhra Pradesh and Karnataka.
Transport: Tamil Nadu has a well established transportation system that connects all parts of the State.
(a) Road: There are 28 national highways in the State, covering a total distance of 5,036 km. The State has a total road length of 167,000 km, of which 60,628 km are maintained by Highways Department. It ranks second in India with a share of over 20% in total road projects under operation in the public-private partnership (PPP) model.
(b) Air: Tamil Nadu has four major international airports. Chennai International Airport is currently the third largest airport in India after Mumbai and Delhi. Other international airports in Tamil Nadu include Coimbatore International Airport, Madurai International Airport and Tiruchirapalli International Airport. It also has - domestic airports at Tuticorin, Salem, and Madurai which connect-several parts of the country.
(c) Ports: Tamil Nadu has three major ports; one each at Chennai, Ennore, and Tuticorin, as well as one intermediate port in Nagapattinam, and 23 minor port.

The Micro, Small and Medium Enterprises are defined under the MSMEDAct 2006. The enterprises are classified as Manufacturing and Service enterprises based on the investment in plant and machinery and equipment (excluding land and building) the classification of Micro; Small and Medium Enterprises is given. 
Tamil Nadu accounts of 15.07% Micro, Small and Medium Enterprises (MSMEs) in the country(the highest among all States) with 6.89 Iakhs registered MSMEs. Producing over 8000 varieties of product for a total investment of more than Rs 32,008 crores.
MSMEs produce a wide variety of products in almost all sectors. The prominent among them are the engineering, electrical, chemicals, plastics, steel paper, matches, textiles, hosiery and garments sector. Around 15.61 lakhs entrepreneurs have registered, providing employment opportunities to about 99.7 lakhs persons with total investment of Rs 1,68,331 crores.

Agriculture:
(i) Tamil Nadu, with seven agro-climatic zones and varied soil types, is better suited for the production of fruits, vegetables, spices, plantation crops, flowers and medicinal plants.
(ii) The State is the largest producer of loose flowers and the-third largest producer of fruits.
(iii) Tamil Nadu has historically been an agricultural State. At present, Tamil Nadu is the India's second-biggest producer of rice, next only to West Bengal.
(iv) The state is one of the major producers of turmeric. It is also the leading producer of Kambu, Com, Groundnut, Oilseeds and Sugarcane.
(v) It ranks first in production of plantation crops and banana and coconut, second in rubber and cashew nut, third in pepper and fourth in sugarcane.
(vi) The gross cropped area under all crops was 58.97 lakh hectares in the year 2013-14. The area under food crops account for 72.9% and that of non-food crops is 27.1%.
(vii) Among the food crops paddy takes a major share. Among the non-food crops, groundnut and coconut take a major share.
(viii) Net sown area has been gradually declining; and, rural land, labour and capital are moving towards urban projects. As a result, villages are emptied and cities are overcrowded and congested, leading to spatially unbalanced bulging.

Per capita Income :
(i) The Per capita GSDP of Tamil Nadu is $ 2,200 which is higher than that of many other States in India.
(ii) Per capita GSDP of Tamil Nadu is nearly 1.75 times higher than the national average, as per 2018 data
(iii) In term of the per capita income in Tamil Nadu was Rs.1,03,600 in 2010-11 and it has increased to Rs.1,88,492 in 2017-18 as per the Budget figures 2018.