Northamptonshire Police is responsible for policing the county of Northamptonshire, covering 914 square miles with a population of around 683,800. The Force responds to incidents 24-hours-a-day, seven days a week and receives more than a million phone calls every year. More than 120,000 of these are emergency 999 calls requesting immediate police attention. Police officers and staff operate from the Police Headquarters and police stations based in Brackley, Corby, Daventry, Kettering, Oundle, Northampton, Rushden, Wellingborough, alongside some of the county's major routes into the county. The Force operates 16 Safer Community Teams and numerous specialist policing units to tackle crime across the county and support the policing of high profile annual events, such as the British Grand Prix at Silverstone, which attracts thousands of people to the county.