In the Kanwari archaeological mound, Painted Gray Ware (PGW) and later historic artifacts were found.

[7] The PGW Culture corresponds to the middle and late Vedic period, i.e., the Kuru-Panchala kingdom, the first large state in the Indian subcontinent after the decline of the Indus-Saraswati Valley civilisation.

[10] The earliest extant historical reference to the Tomaras rule in Haryana occurs in the Pehowa inscription issued during the reign of the Pratihara king Mahendrapala I (r. c. 885-910 CE).

[12][broken footnote] F. Kielhorn suggested that this Tomara family actually resided in Delhi: they may have visited Pehowa on pilgrimage, and built a temple there.

Kanwari also has an old Baba Shri Giri Shiva temple with a monastic akhara for the sadhus (Hindu mystics).

A Gurjara‐Pratihara period 13x10x8.5 cm buff-colored statute of standing Jina in kayotsarga yoga pose in a pillared niche, with makaramukha on its right side, was found.

As per a July 2010 official report,[15] Kanwari has 1,147 households with a total population of 5,733 with 1,196 Scheduled Caste inhabitants.

[16] Kanwari is covered by The Mahatma Gandhi National Rural Employment Guarantee Act and 135 Job cards were issued under this legislation as of July 2010.

Places in clock-wise direction from Kanwari are:[18] To North is Hisar (city) 24 km on Hisar-Tosham-Bhiwani MDR 108 (Major District Road 108).

[6] Kanwari is an administrative unit and has a democratically elected panchayat samiti (village council).

Government of India e-governance services can be availed online at their website for various govt departments including land & revenue (land rights and ownership records), transport (driving license and vehicle registration), health (birth and death certificates), public health (water and sewage connection), food (ration cards), Power (electricity connection) and HUDA or Municipal Committee/council (house tax and building plans), etc.

Kanwari is a semi-arid region and agriculture is supported mainly by canals and ground water irrigation.

Kanwari lies 2 kilometres (1.2 mi) away from the northeast edge (bagar tract) of the Thar Desert.

Hisar experiences a weak monsoon, from late June to September, with about 15 inches (380 mm) of rain.

Winter starts in November and is mild and sunny, although temperatures may reach freezing on some nights.

Animals and bird of various species are found including sparrow, large Indian parakeet, parrot, crow, rat, rabbit, nilgai (state animal of Haryana), pied crested cuckoo, koel, pheasant, kingfisher, bulbul and Indian magpie robin.