Objectives Labor market concentration, or niching, is a process by which individuals are concentrated in particular sectors often by racial or ethnic group, gender, or economic standing. Niching limits economic upward mobility for certain groups, particularly African Americans and Latinos, and processes encouraging niching may change over time. Methods This study examines African‐American and Latino occupational niching in New Orleans and Houston in 2000 and 2008–2012 using confidential microdata and in relation to both individual and neighborhood characteristics. Results Individual and local human capital levels are found to play important roles in niching likelihood, in addition to other individual characteristics, such as foreign‐born status and neighborhood conditions, specifically local co‐racial and co‐ethnic population percentages. Conclusions Results overall highlight the importance of place‐ and group‐specific approaches to both policy and research related to improving economic outcomes for racial and ethnic groups. These customized efforts are particularly important in metropolitan areas undergoing rapid economic, social, and demographic growth and restructuring such as New Orleans and Houston.