According to census 2001 it has a population of 5728, of which 3003 are males and 2725 are females. The number of households is 1102.

Sudhar is divided into the vague and somewhat overlapping areas of Sudhar village, Sudhar Bazaar, Gurusar Sudhar, and Pul Sudhar. It is located nearly at the middle of the road connecting Mullanpur and Raikot; and is flanked by the townships/villages of Halwara, Ghuman, Hissowal, Aitiana, Akalgarh, Rattowal, Toosa, Sidhwan and Bhora. The Abohar Canal, which is a distributary of Satluj rivers and a tributary of Indus river, flows through it.

The place is home to G.H.G. Khalsa College (since 1948), G.H.G. Khalsa College of Pharmacy (1984), G.H.G. Khalsa College of Education (1955), Khalsa Collegiate Public Senior Secondary School and G.H.G. Khalsa Senior Secondary School which are counted amongst the pioneering institutions of education in rural Punjab. The bhangra team of G.H.G college is famous for being one of the best in the country and has won several competitions. The first bhangra team was established in 1968 and its captain was Sardar Jarnail Singh Gill . It also has a couple of primary and secondary schools. The two Kendriya Vidyalayas, one Air Force School and Jatindera Greenfield School are well respected schools and attract a large number of students from the region.