The demography of firms approach studies changes in the amount and composition of large populations of firms on a regional or national level. In this paper, a micro level approach is applied. For a group of 2, 000 firm establishments in the Netherlands, changes inexistence, names, locations and network participation for individual firm establishments are recorded and examined from year to year for a period of 5 years (1998-2003). The results show that after five years, 30% of the firms have closed down altogether and another 16% has moved to a new location. Also, 5% of the firms have adopted a complete new name. The micro level changes in the economic landscape are therefore impressive. This study confirms the 'liability of age' rule: older establishments have a lower risk of closing down; also, older firms relocate much less often than younger firms. The firm death rate is related to the urbanization level of the business environment, as larger cities experience higher firm death rates than rural areas. Firms on average reach the age of 18 years, but the deviation around this average is considerable. The majority of firm relocations is over short distances. Although the observable dynamism in the economic landscape is considerable, it can be assumed that the underlying organisational internal dynamics – in organisational structures, in production processes, in production factors and in management, to name a few– are even more impressive. The study of such more non-visible firm internal factors could help explain the visible changes in the economic landscape.