The 43-year-old reality star sustained a facial injury after an incident in Essex in the early hours of Monday morning.
Police said that a 32-year-old man has been arrested on suspicion of assault.
A spokesperson for the force said: “We were called by colleagues in the ambulance service to reports of an assault in The Meadows, Little Canfield, shortly after 1.30am this morning, Monday August 23.
“We arrived and found a woman had sustained a facial injury which required hospital treatment.
“A 32-year-old man was arrested a short time later on suspicion of assault. He remains in custody.”
Price is a former model and one of Britain’s best-known reality stars. She started her modelling career at 17, under the pseudonym Jordan and rose to fame during the late 1990s. During her modelling career, she starred in a number of TV documentaries including Jordan: The Truth About me and Jordan: The Model Mum.
In 2004, Price went back to using her legal name and competed on reality shows including I’m a Celebrity, Get me out of Here! and Celebrity Big Brother, which she won in 2015.
She has also starred in her own reality series including Katie & Peter, which documented her life with husband, singer Peter Andre, and What Katie Did Next which followed the reality star after she and Andre had separated.
The mother-of-five is also engaged in a number of business ventures. She has authored six autobiographies and eleven novels, one of which topped The Sunday Times bestseller list. She has also released a number of clothing lines, a perfume and a haircare line.
Earlier this year Price announced that she was engaged to former Love Island star Carl Woods.