Marar is a census town in the Ramgarh CD block in the  Ramgarh subdivision of the Ramgarh district in the Indian state of Jharkhand.
 Marar is located at 23°40′23″N 85°30′25″E﻿ / ﻿23.6730°N 85.5070°E﻿ / 23.6730; 85.5070.
 Ramgarh has a vibrant coal-mining sector. The map alongside provides links to five operational areas of Central Coalfields spread across South Karanpura Coalfield, Ramgarh Coalfield and West Bokaro Coalfield. Four of the six CD blocks in the district have coal mines – Patratu, Ramgarh, Mandu and Chitarpur. The high concentration of census towns in these blocks are noticeable on the map. Only two blocks, Gola and Dulmi, are totally rural areas. Ramgarh district lies in the central part of the Chota Nagpur Plateau. The Damodar valley covers most of the district. The forested areas in highlands to the north and the south of the valley can be seen in the map (mark the shaded areas). "Chotanagpur has a charm of its own... The entire area forms one of the most charming series of views imaginable. The far-off hills in the background in exquisite tints of blue or purple as the light falls, the nearer hills picturesquely shaped and luxuriant in every shade of green with their bold escarpments in black or grey, and the brown plains below furnishing their quota of colours."
 Note: The map alongside presents some of the notable locations in the district. All places marked in the map are linked in the larger full screen map.
 According to the 2011 Census of India, Marar had a total population of 5,298, of which 2,777 (52%) were males and 2,521 (48%) were females. Population in the age range 0-6 years was 715. The total number of literate persons in Marar was 3,781 (82.50% of the population over 6 years).
 As per 2011 Census of India, Ramgarh Urban Agglomeration had a total population of 132,441, of which males were 70,871 and females 61,562. Ramgarh Urban Agglomeration is composed of Ramgarh Cantonment (Cantonment Board), Sirka (CT), Marar (CT) and Barkakana (CT).
 As per 2011 census the total number of literates in Ramgarh UA was 95,734 (82.97 per cent of total population) out of which 55,352 (89.57 percent of males) were males and 40,362 (75.35 percent of females) were females.
 According to the District Census Handbook 2011, Ramgarh, Marar covered an area of 4.436 km2. Among the civic amenities, it had 12 km roads with open drains, the protected water supply involved uncovered well, hand pump. It had 917 domestic electric connections, 1 road lighting point. Among the medical facilities, it had 5 hospitals, 4 dispensaries, 4 health centres, 8 family welfare centres, 9 maternity and child welfare centres, 5 maternity homes, 6 nursing homes, 6 charitable hospital/ nursing homes, 10 medicine shops. Among the educational facilities it had 7 primary schools, 4 middle schools, 2 secondary schools, 1 senior secondary school, the nearest general degree college at Ramgarh Cantonment 6 km away. Three important commodities it produced were cement, saria, fire bricks. It had the branch offices of 2 nationalised banks,  8 agricultural credit societies, 8 non-agricultural credit societies.
 There is a station nearby at Ranchi Road on the Barkakana–Netaji S.C.Bose Gomoh line.
 Chotanagpur (CN) College, at Marar, affiliated with Vinoba Bhave University, offers courses in arts, science and commerce.