Background: Anti- malarial self-medication practice in Africa is very common. It is considered as an alternative way for people who cannot afford the cost of health care services. This study was conducted to assess the magnitude and factors associated with anti-malarial self-medication practice among residents of Kasulu Town Council. Materials and methods: The study was a descriptive cross sectional study. Two hundred and eighty consenting respondents were selected by systematic random sampling and interviewed with the aid of a semi structured questionnaire to assess anti-malarial self- medication practice. A p value of less than 0.05 was considered statistically significant, at 95% confidence interval. Results: Prevalence of anti-malarial self-medication was (69.6%). Majority of the respondents (83.1%) reported that, they did not get better after self- medication. About 36% of the respondents metioned time taken in health facilities as the main factor for self- medication. Conclusion: This study revealed that, self-medication practice is very common among community members in Kasulu district. The main reasons identified for self-medication was long time taken to get treatment in health facilities.