Approximately 6 million cervical cancer screening tests (FCU) are performed annually in France, but only 10% of women undergo screening within the recommended interval. It is therefore important to study the socio-territorial inequalities in this screening, both for their own sake and because they may serve as a model for the use of opportunistic medical screening. Using 2010 data from the SIRS (Health, Inequalities, and Social Disruptions) cohort conducted in the four central departments of the Île-de-France region, we examined the territorial determinants of Pap smear screening, taking into account certain individual characteristics of women (age, education level, health insurance coverage, relationship status, area of activity) and paying particular attention to the different neighborhoods they might frequent on a daily basis. A stratified analysis based on their daily activity area shows that living in a neighborhood with a low density of general practitioners and gynecologists was not associated with a significantly higher risk of delayed screening compared to women whose daily activity was restricted to their residential neighborhood. Among working and mobile women, the medical density of none of the three frequented neighborhoods studied was associated with their use of the FCU, but residing in and regularly visiting low-income neighborhoods was associated with a higher risk of delay. Taking contextual effects into account to better understand intra-urban health inequalities is a research challenge that, although it draws on rapidly evolving concepts and methods, already offers insights for public health. Our results thus highlight the specific situation of the most disadvantaged and least mobile women, for whom local healthcare access is crucial, and demonstrate, for others, the limitation of focusing solely on neighborhoods of residence when analyzing contextual factors related to healthcare utilization.