Bavani Sankara Thevan, the illegitimate son of Ragunatha Sethupathy, aligned with the Rajah of Tanjore to attack Ramnad.

Though Bavani won, he did not honor the earlier decision to cede some portions of the empire to the King of Tanjore.

Kattaya Thevar divided the kingdom into five provinces and gave two to Sasivarna, who became the first king of Sivaganga.

As per legend, Sasivarna built the Teppakulam and fort around the spring "Sivaganga", where he met his spiritual guru Sathappan Servai.

From 1863 to 1877 Kathama Nachiar, a daughter, succeeded in winning the claim, but did not attempt to rule with full autonomy and faced ongoing challenges.

[7] Supported in her litigation by George Frederick Fischer, a local cotton merchant, Kathama eventually succeeded in securing an 1863 Privy Council decision which granted her the title.

[12] As per the religious census of 2011, Sivaganga had 84.75% Hindus, 10.07% Muslims, 4.66% Christians, 0.02% Sikhs, 0.01% Buddhists and 0.49% following other religions.

The functions of the municipality is devolved into six departments: General, Engineering, Revenue, Public Health, Town planning and the Computer Wing.

[25][26] The current Member of Legislative Assembly (MLA) of the constituency is Cholan CT. Palanichamy from the AIADMK Party.

[27] Road Buses that connect the nearby villages and smaller towns (e.g. Devakottai, Kalayarkoil, Thirupathur, Illayankudi, Thiruvadanai) terminate at the Sivagangai bus-stand.

The State Transport Corporation runs long-distance buses to Coimbatore, Chennai from Sivagangai bus-stand.

From Sivagangai all mofussil buses that connect towns such as Karaikudi, Manamadurai, Trichy, Sivakasi, Aruppukottai, Dindigul, Oddanchatram, Palani, Pattukottai, Thanjavur, Theni, Erode, Aranthangi, Nagore, Thiruvarur, Velankanni, Rameshwaram, Ramanathapuram, Kalayar Kovil, Paramakudi, Dharapuram, Pudukottai, Nagapattinam, Tiruppur, Coimbatore (TNSTC), terminate at the bus-stand.

Train Sivaganga railway station is located in the east side of town, where the railway line of Trichy-Rameshwaram join and this is serving as Guard line for Virudhunagar to Tiruchirapalli Jn for southern districts trains to reach Chennai Egmore and also operating for goods service due to reduce the rush in main line (Virudhunagar, Madurai Jn, Dindigul, Tiruchy).

[28] Several Express trains and passenger trains are passing through the town and connecting with the cities such as Karaikudi, Rameshwaram, Ramanathapuram, Tiruchirapalli, Coimbatore, Erode, Tiruppur, Chennai Egmore, Thanjavur, Viluppuram, Cuddalore, Pudukottai, Virudhachalam, Varanasi, Bhuvaneswar, etc.

So There are direct trains from Madurai connecting the important cities in Tamil Nadu such as Chennai, Coimbatore, Kanyakumari, Trichy, Tirunelveli, Karaikudi, Mayiladuthurai, Rameswaram, Thanjavur and Virudhachalam.

There is connectivity available to major cities such as Chennai, Delhi, Mumbai, Hyderabad, Bangalore and internationally such as Dubai, Singapore, and Colombo.

TAMIN has over 600 acres of graphite bearing land in Pudupatti, Kumaripatti and Senthiudayanathapuram of Sivaganga taluk, Sivagangai District, Tamil Nadu.

Tamil Nadu Agricultural University plans to set up the State's first Red Soil Dryland Research Centre in Sivaganga district.

Moser Baer Clean Energy Limited has commissioned a 5 MW grid connected solar PV project at Sivaganga, Tamil Nadu.

Ltd., a wholly owned subsidiary of MBCEL, through a competitive bidding process conducted by the Tamil Nadu Renewable Development Agency.

The project is implemented under the 50 MWp generation based incentive scheme of the Ministry of New and Renewable Energy, Government of India.

Alangara Annai Cathedral is the major church and headquarters for Roman Catholic Diocese of Sivagangai.

[citation needed] The church has architecture style like "Fish structure" from the bird eye view.