This document provides an introduction to a well-being index created for New York City neighborhoods. It begins with background on well-being and why indices are used to measure it, noting that income alone does not capture quality of life. The authors developed a methodology using 6 domains (Education, Health, Economic Security, Housing, Safety, Infrastructure) and corresponding indicators. Statistical analysis was conducted to create composite scores for each domain and neighborhood. The results show variation in well-being across NYC with some neighborhoods scoring significantly above or below average. The index provides an overview of well-being between 2009-2013, limited by 5-year ACS data.