One of the indicators of population distribution is gross population density, which is expressed as the number of persons per unit of land area, usually in hectares (has.) or square kilometers (sq.kms.). Historically, Santa Rosa had a density of 1,749 and 3,351 persons per square kilometer of land area in the year 1990 and 2000 respectively. In 2013, Santa Rosa had a population density of 5,347 persons per square kilometer of land area (Table 5-8).
Among the 18 barangays of Santa Rosa, Brgy.Malusak is the densest barangay at 39,097 persons per square kilometer of land area. This barangay also has the smallest land area of 0.14 square kilometer, with a dominantly residential land use. (Table 5-9), On the other hand, Brgy. Santo Domingo is the least dense barangay in the city at 411 persons per square kilometer of land area. This southwest barangay borders neighboring Silang municipality in Cavite.
Urban - Rural Distribution
Another indicator of population distribution is the extent of urbanization. This is consistent with the morphology (internal structure) of most Philippine municipalities/cities characterized by a compact urban area (poblacion) and scattered villages (barrios) (HLURB, 2007).
The NSO defines an urban area as (1) a barangay that has a population size of 5,000 or more; or (2) a barangay has at least one establishment with a minimum of 100 employees; or (3) a barangay has 5 or more establishments with a minimum of 10 employees and 5 or more facilities within the two- kilometer radius from the barangay hall (NSCB, 2003).
Based on these criteria on urban areas, population data and number of establishments with th e required number of employees, all barangays in the City of Santa Rosa are classified urban.
In terms of population size, majority of th e barangays (83) have a population of 5,000 or more. The rest of the barangays (17) have less than a 5,000 population count. These barangays are Brgy.lbaba, Brgy.Kanluran, and Brgy.Sto.Domingo.
However, the presence of NUVALI Solenad 1 &2, master-planned communities in Brgy. Sto.Domingo, the strategic location of Brgy. Ibaba and Brgy. Kanluran at the heart of Santa Rosa where many fast food chains 24/7 convenience stores commercial, retail, and financial establishments are situated, these barangays satisfy the other requirements of an urban area.