Haryana has been divided in 22 districts by its Government. When Haryana became a state on 1st of November 1966 , then it has only 7 districts. These are :
- Ambala
- Gurugram
- Hisar
- Jind
- Karnal
- Mahendergarh
- Rohtak
Later on , these are further divided and now Haryana has a total of 22 districts. These districts with their date of establishment , their area and population (according to 2011 census) are as :
Ambala
- Established on 1st of November 1966
- Area : 1574 sq. Km
- Population : 11,36,784
Gurugram
- Established on 1st of November 1966
- Area : 1253 sq. Km
- Population : 15,14,085
Hisar
- Established on 1st of November 1966
- Area : 3983 Sq. Km
- Population : 17,4,815
Jind
- Established on 1st of November 1966
- Area : 2702 Sq. Km
- Population : 13,32,042
Karnal
- Established on 1st of November 1966
- Area : 2520 Sq. Km
- Population : 15,06,323
Mahendergarh
- Established on 1st of November 1966
- Area : 1859 Sq. Km
- Population : 9,21,680
Rohtak
- Established on 1st of November 1966
- Area : 1745 Sq. Km
- Population : 10,58,683
Bhiwani
- Established on 22nd of December 1972
- Area : 4778 Sq. Km
- Population : 16,29,109
Sonipat
- Established on 22nd of December 1972
- Area : 2122 Sq. Km
- Population : 14,80,080
Kurukshetra
- Established on 23rd of January 1973
- Area : 1530 Sq. Km
- Population : 9,64,231
Sirsa
- Established on 26th of August 1975
- Area : 4277 Sq. Km
- Population : 12,95,114
Faridabad
- Established on 15th of August 1979
- Area : 1792 Sq. Km
- Population : 17,98,954
Kaithal
- Established on 1st November 1989
- Area : 2317 Sq. Km
- Population : 10,72,861
Panipat
- Established on 1st November 1989
- Area : 1268 Sq. Km
- Population : 12,02,811
Rewari
- Established on 1st November 1989
- Area : 1582 Sq. Km
- Population : 8,96,129
Yamunanagar
- Established on 1st November 1989
- Area : 1768 Sq. km
- Population : 12,14,162
Panchkula
- Established on 15th of August 1995
- Area : 898 Sq. Km
- Population : 5,58,890
Fatehabad
- Established on 15th of July 1997
- Area : 2538 Sq. Km
- Population : 9,41,522
Jhajjar
- Established on 15th of July 1997
- Area : 1834 Sq. Km
- Population : 9,56,907
Nuh
- Established on 4th of April 2005
- Area : 1874 Sq. Km
- Population : 10,89,406
Palwal
- Established on 15th of August 2008
- Area : 1359 Sq. Km
- Population : 10,40,493
Charkhi Dadri
- Established on 18th of September 2016
- Area : 1370 Sq. Km
- Population : 5,02,276