Jhajjar is one of the 21 districts of Haryana state, India. Jhajjar district, Haryana was carved out of Rohtak district on July 15, 1997. The district headquarter is situated in its namesake, Jhajjar town at a distance of about 65 kms. from Delhi.  The town is said to have been founded by Chahaju and the name Chhajunagar was changed to Jhajjar subsequently. Another legend is that the name is derived from Jharnanagar - a place of a natural fountain. 

Other towns in the district are Bahadurgarh and Beri. Bahadurgarh was founded by Rathi Jats and formerly known as Sharafabad. It is situated 29 kms. from Delhi and had developed into an important industrial centre.

Location: Jhajjar is located 65 kms. from Delhi and is centrally connected to the main districts like Gurgaon, Rewari, Delhi and other neighbouring towns.

Linking Roads: Jhajjar is very well-connected to the Highway No. 10 through Bahadurgarh and is also connected to National Highway No. 8 through Gurgaon and Farukh Nagar.

Postal Code: 124103 | Longitude: 76° 28' 45" W and 76° 84' 15" E | Latitude: 28° 33' N and 28° 42' S | Area: 1834 square Kms | Population: 956,907 (Census 2011) | Literacy Rate: 80.80% | STD Code: 01251 | Villages 247 | Language: Hindi, English | Best season to visit: All seasons to visit.