Salanpur is a community development block that forms an administrative division in Asansol subdivision of Paschim Bardhaman district in the Indian state of West Bengal.

Rupnarainpur, a gram panchayat in Salanpur CD Block, is located at 23°49′05″N 86°53′20″E / 23.818°N 86.889°E / 23.818; 86.889.

Salanpur CD Block is bounded by Jamtara and Nala CD Blocks, in Jamtara district of Jharkhand, on the north, Barabani CD Block on the east, Asansol (municipal corporation) and after that Neturia CD Block, in Purulia district, on the south and Nirsa and Baliapur CD Blocks, in Dhanbad district of Jharkhand, on the west.

Salanpur CD Block has an area of 135.05 km² (52.14 sq mi). It has 1 panchayat samity, 11 gram panchayats, 96 gram sansads (village councils), 74 mouzas and 69 inhabited villages. Chittaranjan and Salanpur police stations serve this block. Headquarters of this CD Block is at Rupnarayanpur.

Gram panchayats of Salanpur block/panchayat samiti are: Achhra, Alladi, Basudevpur-Jemari, Dendua, Ethora, Fulberia-Bolkunda, Jitpur-Uttarrampur, Kallya, Rupnarayanpur, Salanpur and Samdi.

As per the 2011 Census of India Salanpur CD Block had a total population of 160,357, of which 101,360 were rural and 61,697 were urban. There were 83,796 (51%) males and 79,261 (49%) females. Population below 6 years was 17,118. Scheduled Castes numbered 39,294 (24.10%) and Scheduled Tribes numbered 17,084 (10.48%).

As per 2001 census, Salanpur block had a total population of 156,338, out of which 82,741 were males and 73,597 were females. Salanpur block registered a population growth of 9.64 per cent during the 1991-2001 decade. Decadal growth for Bardhaman district was 14.36 per cent. Decadal growth in West Bengal was 17.84 per cent. Scheduled castes at 35,898 formed around one-fifth the population. Scheduled tribes numbered 17,143.

Census Towns in Salanpur CD Block are (2011 census figures in brackets): Chittaranjan (39,098) and Hindusthan Cables Town (22,599).