Janko Kala continued to grow steadily through the Late Chiripa phase. Sector C covers 7.5 ha and has a population index of 429. It is one of the four first-tier Late Chiripa sites. The growth rate of Janko Kala in the Middle Formative was 0.09%, somewhat below the phase average. It also seems to be the only one of the large MF villages which is lacking clear evidence of public architecture.