In 1980, the pattern was towards urbanization. This was due to the pull of newly installed infrastructures, particularly roads, and the sporadic growth of trade in strategically situated municipalities that have better economic opportunities. The 1990 growth originated from the strong attraction of employment opportunities in established urban centers, which have become a source of growth of adjacent municipalities. This situation was highly evident in Naga and Legazpi areas, whose surrounding municipalities exhibited high growth rates. Unmistakably, the spill-over effects of development permeated those initial high growth areas.