Lauren Bone took over vulnerable people's homes in the city and used them to sell drugs.
Bone headed up a county drugs line - which originated in London but established itself in Oxford.
Police raided a property that the 21-year-old was living at on Iffley Road back in June 2019.
They also attended a second address in Spencer Crescent in July 2019 and seized heroin, cash, knives and mobile phones.
Bone - who's from Kelsall Croft in Birmingham - was charged on July 3rd 2020 and later admitted two counts of possession with intent to supply class a drugs.
She was sentenced at Oxford Crown Court on Friday (8/10) to three years in prison.
Police say she also exploited vulnerable people who were living at the addresses she took over in Oxford.
A second person - 28-year-old Mustafah Ahmed from Swinburne Road in Oxford - was also convicted as part of the Thames Valley Police investigation.
He pleaded guilty to one count of possession with intent to supply class A drugs and was sentenced to one year and nine months, suspended for two years.
Ahmed was also sentenced to 140 hours of unpaid work.
Police carried out the 2019 raid after a man contacted officers to alert them to drug dealers working out of his Iffley Road property.
When they arrived, officers found wraps of drugs in the toilet, which were confirmed as Heroin. They searched the flat and also found equipment which is used in dealing drugs.
Investigating officer, PC Chris Kidd, of the Stronghold Team, based at St Aldates police station, said: “Bone was arrested following an investigation into a county drugs line, originally from London which had established themselves in Oxford.
“Bone was the main facilitator for this drugs line within the Oxford area and was also involved in the exploitation of vulnerable people who were living at the addresses she took over.
“The information from the public around drug supply offences in Oxford played an important role in developing information into a proactive investigation.
“If you have any information, we would encourage you to report it to us by calling 101 or through the online reporting on our website.”