Ullikottai 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 Ullikottai I was 5,260 which includes 2,683 males and 2,577 females. Ullikottai I covers 494.81 ha area. Pincode of Ullikottai I is 614018.