Residential income segregation is a spatial manifestation of social inequality and is an important factor that influences access to resources, services, and amenities. In general, past research analyzing income segregation has applied index-based methods to describe the separation of low-income households at one spatial scale; however, existing studies have not yet considered how income segregation varies across multiple income classes, spatial scales, and local contexts. This study applies a multilevel multigroup modeling approach to explore the global and local patterns of income segregation between dissemination areas (micro-scale), census tracts (meso-scale), and neighborhoods (macro-scale) in Toronto, Canada. A global model that estimates the overall multiscale segregation of five income classes finds that the most affluent families had the highest levels of segregation and that the segregation of all income classes was strongest at the macro- and micro-scales. A local model that allows the micro-scale segregation measures to vary geographically shows that higher-income families were less segregated in the city center than in the inner suburbs, that middle-income families were highly segregated in areas serviced by public transit, and that almost all income classes had high levels of segregation in disadvantaged neighborhoods prioritized for investment by local policymakers. The methodological and substantive contributions of this study for understanding the complex patterns of income segregation are discussed.

居民收入隔离是社会不平等的空间表现，是影响获取资源、服务和便利设施的重要因素。总的来说，过去分析收入隔离的研究采用基于指数的方法来描述一个空间尺度上低收入家庭的隔离；然而，现有研究尚未考虑收入隔离如何在多个收入类别、空间尺度和当地环境中变化。本研究应用多级多组建模方法来探索加拿大多伦多的传播区域（微观尺度）、人口普查区（中尺度）和社区（宏观尺度）之间的全球和地方收入隔离模式。一个估计五个收入阶层整体多尺度隔离的全球模型发现，最富裕的家庭的隔离水平最高，所有收入阶层的隔离在宏观和微观尺度上最强。一个允许微观隔离措施因地域而异的地方模型表明，高收入家庭在市中心的隔离程度低于内郊区，中等收入家庭在有公共交通服务的地区高度隔离，并且在当地决策者优先投资的弱势社区，几乎所有收入阶层都存在高度隔离。讨论了这项研究对理解收入隔离的复杂模式的方法论和实质性贡献。