Sogdian coin, from Kelpin, 8th century, British Museum In 1902, a
xiancheng () was created at Kalpin. In 1930, a
xianzhi () was created at Kalpin. According to
Radio Free Asia, in 2008, Chinese authorities demolished a Uyghur mosque from the Upper Kumtagh village in Kalpin County because the mosque was said to be illegally built and said to have been conducting illegal religious activities. On February 20, 2009, a 5.2 magnitude earthquake struck at a location from the county seats of Kalpin and
Akqi counties. 207 aftershocks had been recorded by 11 AM on February 22. More than ten thousand houses were damaged and 182 were destroyed. Forty tents were set up and 12,400 people were relocated. The county received one million
CNY in rescue funds from nearby government offices. On April 12, 2014 at 11:40 PM, Abdulbasit Ablimit (Abdubasit Ablimit), 17, of Qum'eriq village in Yurqi (Yurchi, Yu'erqi), was shot and killed by police while riding a motorcycle. Two other Uyghurs were injured. Four to five hundred people from their village participated in a protest at the county office demanding that the police officer be punished according to law. More than thirty of the protesters were detained and some were beaten.
Tianshannet reported that on the following Wednesday, a man in
Urumqi was detained by police for spreading rumors about the incident. The
Uyghur American Association condemned the killing. On April 3, 2015, Aqal (ئاچال Aqiale, Achal), then a township, was made a town. According to research presented in
The Diplomat, Xinjiang Nuodun Garment Co., Ltd. (), a company based in Kalpin County, was founded in July 2017. The company has made shipments of men and women's trousers to four companies in the United States. The company is also mentioned in the context of
Aksu Prefecture's wider policy related to
re-education camps in the
Aksu Daily. ==Geography==