Studies on contraceptive behaviours mainly focus on rural urban differentials. A very few studies have focused on contraceptive behavior among slum and n slum dwellers in urban areas. Accordingly this study examines level, differential, and determinant of contraceptive use and unmet need for contraception among slum and n-slum dwellers in selected cities of India, using the third round of National Family Health Survey data, conducted during 2005-06. Bivariate and tabulation, multivariate analysis (binary logistic regression, multimial logistic regression) has been deployed in the study. Results show a smaller difference in contraceptive use between slum and n-slum women in cities. Interestingly, women belonging to the Muslim religion are more likely to use modern contraceptive methods irrespective of slum and n-slum dwellers. Spatial variation shows women of Delhi, Kolkata, and Chennai are more likely to use modern contraceptive methods in both slum and n-slum areas.