Ambagarathur is a village in Thirunallar Taluk tehsil in district of Karaikal, Puducherry, India. As per the data provided by Census of India in 2011, total population of Ambagarathur was 7,391 which includes 3,615 males and 3,776 females. Ambagarathur covers 413.4 ha area. Pincode of Ambagarathur is 609601.