INTRODUCTION: mammography has the potential for identifying high risk women with breast cancer. Early detection is important in reducing mortality and morbidity, and crucial for better prognosis. Mammography is poorly practiced in Nigeria. This study assessed the association between socio-demographic characteristics and uptake of mammography among women ≥40 years. METHODS: a cross-sectional descriptive study design was employed and data was collected from 365 consenting participants in Calabar, Nigeria, using pre-tested questionnaire. SPSS Version 20 was used for data entry and analysis. The results were descriptively presented by frequencies and percentages. Pearson Chi-Square (χ2) analysis was performed to detect the association between variables at 5% level of significance (p-value of ≤0.05). RESULTS: only 9.9% of participants had a mammography, majority 90.1% never had. Uptake was highest among respondents with tertiary education, married, Civil/Public Servants, and those in the high income level categorization. Educational status, marital status, occupation and age were not statistically significantly associated with mammography uptake (p>0.05). Only religious denominational affiliation (p = 0.02) and income level (p = 0.002) were statistically significantly associated with uptake. Barriers to uptake were poor knowledge about mammography (49.8%), psychosocial (37.8%), economic (17.1%) and health systems (11.5%). Key facilitators to uptake were encouragement/counselling by health workers (44.0%) and presence of breast problems (37.4%). CONCLUSION: mammography uptake in Calabar, Nigeria was extremely low. Therefore, regular awareness campaigns targeting women at faith-based settings, and provision of mammography screening services at subsidized rates will enhance knowledge level and uptake of mammography.