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According to the 2001 census, the taluk of Gangavalli had a population of 148,780 with 75,169 males and 73,611 females. There were 979 women for every 1000 men. The taluk had a literacy rate of 63.81. The total number of households was 38,163.
- "Primary Census Abstract - Census 2001". Directorate of Census Operations-Tamil Nadu.