Vellore, also spelled Velur, is a sprawling city and the administrative headquarters of Vellore district in the Indian state of Tamil Nadu. It is strategically located on the banks of the Palar River, surrounded by the Javadi Hills in the northeastern part of Tamil Nadu, and lies on the Mumbai–Chennai arm of the Golden Quadrilateral. The city is a significant hub for medical tourism due to institutions like the Christian Medical College & Hospital, and is renowned as India's largest exporter of finished leather goods. Vellore boasts a rich history dating back to the ninth century, evidenced by ancient inscriptions and its historic Vellore Fort, which played a pivotal role in various dynastic periods and British colonial history, including the Vellore Mutiny of 1806.

The city is governed by a Municipal Corporation, underlining its importance as a regional center [1].

• Vellore has a tropical savanna climate (Köppen climate classification Aw), with temperatures ranging from 13°C (55°F) to 39.4°C (102.9°F) [1].
• The city receives an average of 1,034.1 mm (40.71 in) of rainfall annually, primarily during the southwest (June to September) and northeast (October to December) monsoons [1].
• As per the 2011 census, Vellore city had a population of 504,079, with a sex ratio of 1,009 females per 1,000 males, higher than the national average [1].
• The literacy rate in Vellore is 87.09%, surpassing the national urban average of 85% [1].
• The religious demographic in 2011 showed Vellore to be 80.09% Hindu, 14.28% Muslim, and 4.79% Christian, with Tamil being the official language spoken by 93.45% of the population [1].
• The GDP of Vellore was $4 billion as of 2020 [1].

Vellore serves as the municipal headquarters of the Vellore district. The city was initially established as a third-grade municipality in 1866, gradually advancing to a first-grade municipality in 1947, a selection-grade in 1970, and finally elevated to a municipal corporation on August 1, 2008. The Vellore Municipal Corporation oversees six key departments: General Administration/Personnel, Engineering, Revenue, Public Health, Planning, and Information Technology (IT), all managed under the executive control of a municipal commissioner. Legislative authority resides with a 60-member body of elected councilors, led by an elected mayor and a deputy mayor.

Vellore is represented in the Tamil Nadu Legislative Assembly through the Vellore, Katpadi, and Anaicut constituencies, and in the Lok Sabha through the Vellore and Arakkonam constituencies [1]. Law enforcement is managed by the Vellore subdivision of the Tamil Nadu Police, which includes four police stations, one dedicated to women, alongside specialized task forces [1].

Vellore's economy is notably driven by its strong tertiary sector, which accounts for approximately 83.35% of the workforce in transport, services, and commerce, while manufacturing and household industries employ 13.52%. The city is widely recognized as India's "leather hub," with numerous leather and tannery facilities in and around Vellore, Ranipet, Ambur, and Vaniyambadi, contributing over 37% to India's total leather and leather-related product exports. Major industrial presences include Bharat Heavy Electricals Limited (BHEL) and Tamil Nadu Industrial Explosives Limited (TEL), Asia's largest explosives manufacturing company. International brands like EID Parry, Mitsubishi, and MRF also have manufacturing units in the region.

The Christian Medical College & Hospital (CMCH) is Vellore's largest private employer, significantly boosting the local economy through medical tourism and allied businesses. Rural industries such as weaving, beedi making, and matchstick rolling also contribute to the local income, with military spending from numerous recruits in the Indian Armed Forces providing another substantial economic source [1].

Vellore benefits from a well-developed transportation network, featuring extensive road and rail connectivity. The municipal corporation maintains over 104 km of roads, and major National Highways (48, 38, 40, 75) pass through or terminate in the city, linking it to major urban centers across Tamil Nadu, Andhra Pradesh, and Karnataka. The city's bus service operates from two main terminals, and a new integrated bus terminus was completed in January 2022. Vellore has three main railway stations, with Katpadi Junction being a major hub on the Chennai-Bangalore line, facilitating extensive rail links across India with over 250 trains halting daily. Vellore Airport, established in 1934, is undergoing revival under the Regional Connectivity Scheme (RCS) to accommodate commercial flight operations, with initial tests successfully conducted in September 2023.

Utility services include electricity supplied by the Tamil Nadu Electricity Board (TNEB) and water from the Palar River. The municipal corporation manages solid waste collection, though an underground drainage system is absent, relying on septic tanks and open drains. The city also provides healthcare facilities through 24 government and private hospitals and maintains street lighting and a daily market [1].