The £5 charge will apply to car drivers only, with permits available for carers, traders, blue badge holders and those commuting to or living in a central area of the city.
The county council said it made the proposal because of delays to a planned trial of traffic filters, which cannot be introduced until Botley Road is reopened.
The charging points for the congestion zone will be in the same places as the planned traffic filters in Hythe Bridge Street, St Cross Road, St Clement’s Street, Thames Street, Marston Ferry Road and Hollow Way.
A six-week consultation is currently under way.
