Hartar Santar is a village in Tyuni tehsil in district of Dehradun, Uttarakhand, India. As per the data provided by Census of India in 2011, total population of Hartar Santar was 620 which includes 323 males and 297 females. Hartar Santar covers 270.85 ha area. Pincode of Hartar Santar is 248196.