Yamunanagar, is a city and a municipal corporation in Yamunanagar district in the Indian state of Haryana. This town is known for the cluster of plywood units and paper industries. It provides timber to larger industries. The older town is called Jagadhri. The Yamunanagar-Jagadhri railway station (YJUD) services the city. Despite its name, Jagadhri Railway Station is situated in Yamunanagar. There is also another railway station called Jagadhri Workshop in Yamunanagar.

Yamuna Nagar has the river Yamuna (its namesake) running through the district, which forms the eastern boundary with the neighbouring Saharanpur district. This boundary is also a state boundary, as Saharanpur is in the state of Uttar Pradesh. The district also separates the Yamuna system from the Satluj river system.

From Yamuna Nagar, Yamuna river enters plain area for the first time. The historical river Saraswati also originates from Adi badri, also located in the district. Towards its northern edge is a sub-mountainous region, which has more forest cover and many streams; it is the area where the river Yamuna flows out of the hills and into the plains. The northern boundary is also an interstate boundary with the state of Himachal Pradesh to the north. Sirmour in Himachal is the district to its north with the towns of Nahan and Paonta Sahib close to the boundary with Yamunanagar.

As per provisional data of census 2011, Yamunanagar urban agglomeration had a population of 383,318, out of which males were 205,346 and females were 177,972. The population in the age range 0 to 6 years was 40,950. The total number of literates were 293,475, of which males were 163,791 and females were 129,684. The effective literacy rate. that is of population above 7 years of age was 85.72 percent.