Population growth of an area over a period of time is likely to create dynamic spatial mosaic. Such spatio-temporal demographic dynamics may be perceived through size and density growth of population in the concern area through different statistical measures. All the different measures prompt concentration, de-concentration and spilling of population in different segments of the area over time. This enquiry attempts to capture the reality of block wise size and density growth of Bankura district from 1951 to 2011. Apparently silent up to 1981, the district is showing spilling of population in different parts, except the Western most blocks marked by hilly terrain, forest cover and thinner soil surface.