A system and method for analyzing a queue. The method may comprise defining a queue and evaluating a series of still images of the queue zone at periodic intervals over a predefined period of time. The method may further comprise approximating an estimated average number of people in the queue over the interval during which the still image was taken to be a number of people counted in the queue zone minus one person who is assumed to be engaged in a transaction. The method may further comprise calculating an estimated average number of the people in the queue over the predefined period by averaging estimated average number of people over intervals within the predefined period. The method may further comprise determining a measure of a queue length based on the estimated average number of people in the queue over the predefined period.