* Annual estimated passenger usage based on sales of tickets in stated financial year(s) which end or originate at Brookmans Park from Office of Rail Regulation statistics. Methodology may vary year on year.
The station has four platforms in total, two island platforms on both sides, but only platforms 1 & 4 are used regularly, platforms 2 & 3 are only used during line disruption or engineering work. The west side serves northbound services and another island platform serving southbound services which lies to the east. The station car park parallels the island platforms to the east.
The platforms are reached by a steep footbridge, the station building (an LNER survivor) being a part-time booking office at the NW extremity of the station. 
Ticket Office Opening Times & Station Staffing Hours
Below are the current opening and staffing times for Brookmans Park, as of 2010[update].