The TIES-NL data, as part of the overall TIES Project (see also the TIES website), surveyed respondents aged 18-35 who are native-born children of Turkish and Moroccan immigrants (the second generation) and their peers without an immigration background (the ‘comparison group’) in two main Dutch cities, Amsterdam and Rotterdam. The overall aim of the project is to collect valuable and comparable information on specific second-generation groups in 15 European cities, in order to measure their level of integration in many spheres (such as, but not limited to, education and the labour market) and the impact of context on integration.The survey comprises the following modules: education, labour market, partner, parents, housing and neighbourhood, social relations and political participation, gender roles and child care, identity, religion, income and psychosocial, personal relations. See also the file with the questionnaire for more details. Relevant data at neighbourhood and municipality level for Rotterdam and Amsterdam were collected from CBS Statline and added to the dataset. Note that the data is coded to fit the international questionnaire, in order to facilitate comparisons with the other TIES surveys.