Measuring isolation across space and over time with new tools: Evidence from Californian metropolitan regions

Abstract

Studies of segregation continue to explore analytic tools to engage with patterns of separation within cities. In recent work, scale has emerged as an important dimension of understanding segregation – simply put, separation is strongly affected by the scale which is used in the measurement process. Levels of segregation are also influenced by the time in which the analysis takes place. We outline an approach to separation which has four dimensions – (1) using bespoke neighborhoods – who do you meet at varying scales, (2) measuring the size of the change in separation over time, (3) estimating the rate of change in separation across space and time and (4) visualizing the change, mapping changing levels of contact. The themes are explored using data from the diverse, multi ethnic neighborhoods in Californian metropolitan areas. The result of a bespoke neighborhood approach to segregation provides a more complete demonstration of the pattern of ethnic segregation. We know that there are declining overall levels of segregation, but while levels are decreasing for Whites they are increasing for Hispanics and Asians but at different rates depending on local contexts. Viewing assimilation in a multi-scalar visual context expands our understanding of segregation and assimilation.