Tanac is located in the municipality Jasenovac, in Sisak-Moslavina County at an elevation of 95 meters above sea level and it covers the area of 4.29 km² (1.66 sq. miles). According to the 2011 census report, there were 129 inhabitants. It is predominantly populated by Croats (99%), but also. Nearby places: Višnjica, Uštica, Jasenovac, Drenov Bok, Košutarica, Krapje, Donji Cerovljani, Gornji Cerovljani, Hrvatska Dubica and Plesmo.