Mahadeva Pattinam I is a village in Mannargudi tehsil in district of Thiruvarur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mahadeva Pattinam I was 3,577 which includes 1,804 males and 1,773 females. Mahadeva Pattinam I covers 573.48 ha area. Pincode of Mahadeva Pattinam I is 614018.