Objectives: The aim of this study was to evaluate the affecting factors for contraceptive method usage among the women aged between 15-49. Materials and Methods: This descriptive, cross-sectional study was carried out between 1 July – 31 March 2017 at Terme Kozluk, Canik Basalan, Vezirkopru Bahcekonak, Ladik, Ikadim Yesilkent, Carsamba Yesilirmak Health Care Centers in Samsun. This study consisted of 4464, 15-49 aged women who applied to these primary health care units with any complaint during this study period. In a face to face questionnaire, their socio-demographic characteristics and experiences with contraceptives were asked. The data were evaluated by the SPSS 20.00 program. Pearson's Chi-Square was used in the evaluation of the data. p<0.05 was considered significant. Results: The participants had a mean age of 32.61 years (SD±7.42), and have 2.80 children (SD±1.61).4464 women that 47.58 % use a method of birth control and 52.42 % do not use any method. 68.36% of all the participants using a birth control method were using a modern contraceptive method where as 31.64% traditional protection methods. The choice for modern contraceptive methods were; 11.18 % of the women use tubal ligation, 10.78% of the women’s partners use condoms, 7.49% of the women use intrauterine devices, 2.17% of the women take oral contraceptives, 0.98% of the women make estrogen injections. It was found that the most traditional protection method used was the withdrawal method (14.77%). The causes of not using the protection methods were; 6.11% of the women were breast-feeding, 28.33% of the women did not want to use any contraceptive method, 13.46% of the women wanted to get pregnant, 6.04% of the women were pregnant, 27.05 % of the women were single, 19.01% of the women were post-menopausal. Conclusion: Family planning services are important in primary care services regarding the needs of the society. The presentation of this service may be monitored by following their usage rates. The rate of using family planning methods was rather high among the women. In our study, it is observed that the rate for using modern family planning methods increases as the women’s education levels increase.