This article presents a preliminary analysis of a sample of 40.393 ancient Greek graves that are correlated to the data of geographic distribution, palaeodemography and burial customs from the Mesolithic epoch up to the Byzantine era. The sample can be considered statistically large for most of the scientific topics presented here and thus it results to a satisfactory approach to the general picture. The interrelation between the different chronological periods and the various burial traditions, such as the grave types, the degree of kterisis and the grave orientation, cannot be accidental. The various interpretations given to related issues are open to further debate, considering also that a more extensive analysis is required in order to be clarified specific and general conjectures, in relation to their chronological settings.