Education is the leading industry for Oxford workers, with almost a quarter of the city's working population employed in the sector.
This is according to 2021 Census data analysed by income protection firm Eleos.
More than 17,000 residents are in the education sector, followed by the human health and social work sector, which employs close to 14,000 people.
The professional, scientific and technical activities sector, with 6,886 people, comes third.
The wholesale and retail trade, and the information and communication sectors round out the top five.
CEO of Eleos, Kiruba Shankar Eswaran said: "The number of economically active people is a key metric in assessing the overall economic health of a city.
"High levels of economic activity often correlate with a vibrant and growing economy, while low levels may indicate economic challenges.
“Person-facing roles, such as customer service, healthcare, education, and hospitality, are integral to the functioning of society.
"Monitoring these roles helps identify shifts in societal needs and preferences."
The study also revealed that just less than half of Oxford's approximately 70,771 economically active residents are in work and another 2.2 per cent are job hunting.
Meanwhile, 59,049 residents are economically inactive, with full-time students constituting the largest group.
Though the majority of workers, 70.6 per cent, work full-time, there is a significant part-time workforce of 21,574 people - 29.4 per cent.
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