The building was closed in November for refurbishment and was due to reopen in March.
However, delays in the work meant police officers were not able to return to the station until last month and it has been reopened to the public.
The police has rebranded the public service at the station, calling it a 'Police Information Point (PIP)’.
This will provide the public with a range of advice on crime reduction and community safety.
Staffed by trained volunteers, it is on Mondays 2-4pm, and Wednesdays 10am-2pm and, according to officers, it provides an opportunity for interaction between the police and community.
Previously, the station was open to the public on Tuesday and Thursday from 10am-2pm. Superintendent Kate Ford, local police commander for Windsor and Maidenhead, said: “The decision to reopen Ascot police station as a PIP was taken following careful consideration and analysis based on its minimal footfall and high costs.
“However, I would like to reassure the residents of Ascot that the availability and visibility of police officers to attend incidents will not be affected by the police station offering a PIP service. My team of dedicated neighborhood officers will for example continue to be based and work out of Ascot police station, therefore being available to speak to residents and engage with the community as part of their normal day-to-day patrol plan.
“Due to PIPs relying heavily on being staffed and run by trained volunteers, there is a need for more volunteers to be recruited as this will undoubtedly help increase its opening days and hours.
“At present, we have four trained volunteers but I would reach out to the community of Ascot and ask more people to get in touch if interested.
“All police volunteers receive specific training and are considered to be an integral part of the policing family.”
Police have been operating out of the station since Royal Ascot week in June.
The PIP cannot be used to report crime, which must still be done by ringing 101, or by visiting a nearby police station. The nearest stations are Windsor police station, in Alma Road, or Bracknell police station, located in The Broadway.
To volunteer to help run the service, you must be aged 18 or above. App-ications can be found at www.thamesvalley.police.uk.