The smallest district of Haryana is Panchkula. It has a population of 1,002,575 and an area of 1,118 square kilometers. It is located in the southern part of the state and is bordered by the districts of Ambala, Kurukshetra, and Mohali. The district headquarters is Panchkula city.
Panchkula is a developed district with a good infrastructure. It is home to many educational institutions, hospitals, and industries. The district is also a popular tourist destination.
The other options are incorrect because they are not the smallest districts of Haryana. Gurugram is the most populous district of Haryana, with a population of 3,101,819. Bhiwani is the second most populous district, with a population of 2,194,155. Faridabad is the third most populous district, with a population of 2,136,567.