Translate the following English sentence to French:
"These areas of our cities are often home to single-parent families, elderly people who receive a pension and no longer carry out productive activity, and families facing difficulties; sometimes they are families which have broken down and which are excluded from mainstream society."
Dans ces quartiers de nos villes vivent fréquemment des familles monoparentales, des personnes du troisième âge qui perçoivent une pension de retraite et n'exercent plus d'activité productive ainsi que des familles connaissant des situations difficiles, parfois de désintégration et de déstructuration.