This document discusses factors that affect the location choices of street vendors in Science City, Muñoz, Nueva Ecija, Philippines. It first provides background on the role and importance of street vendors in the Philippines' economy, noting that they make up 72.5% of employment in the informal sector. It then reviews literature on the evolution of markets and consumer behavior, the role of ethnicity, and the roles of government in regulating street vending. The purpose of the study is to provide baseline data on how street vendors choose locations and to help minimize their costs of competition by understanding the key determinants of their location decisions.