Uttar Kalas is a census town within the jurisdiction of the Magrahat police station in the Magrahat II CD block in the Diamond Harbour subdivision of the South 24 Parganas district in the Indian state of West Bengal.

In the eastern portion of the subdivision (shown in the map alongside) there are 24 census towns.

Dhamua, Shyampur and Nainan form another cluster of census towns closeby in the Magrahat II CD block.

[7] According to the 2011 Census of India, Uttar Kalas had a total population of 6,474, of which 3,382 (52%) were males and 3,092 (48%) were females.

Among the civic amenities, it had 15 km roads with open drains, the protected water supply involved overhead tank.

Three important commodities it produced were: feather duster, magic items and embroidery.