Today, more than ever, it is becoming evident that Gross Domestic Product (GDP) alone is not sufficient in guiding national development strategies. In this sense, measuring the social progress of a country can provide an additional lens on national performance, which would eventually help policymakers to not only gain an advanced understanding of the ways that would unleash greater long-term economic success, but also be able to propose strategies that would create the conditions for all individuals in a society to reach their full potential, enhancing and sustaining the quality of their lives. In this paper, we propose a method to measure social progress at the sub-national level, with an application to the Peruvian regions. As such, this paper builds a unified envelopment-based model for integrating a two-stage process of the index generation. We compare and contrast the radial and non-radial envelopment approaches; it is evident from the model that the non-radial approach provides better insights when compared to the radial approach.