Kollin Pata belongs to the Santa Rosa group of sites, together with Sonaji (T-271) and Kumi Kipa (T-272). Of these three sites, Kollin Pata was the only one to experience appreciable growth during the Tiwanaku Period. Sector C has a population index value of 693 (11.73 ha), as opposed to 246 for the LF2 Sector B. This is an annual growth rate of 0.16%. This is twice the Taraco Peninsula phase average (see Table 8.1). Like Kumi Kipa, the ceramics seem to indicate a predominantly domestic occupation.