The purpose of this study is to investigate the awareness level of myocardial infarction (MI) symptoms for the residents in the underserved and deserved emergency medical services areas and verify the effect of the existence of residence in the underserved emergency medical services areas on the awareness of MI symptoms. Methods: This is a cross sectional study by using the data of the 2017 Korea Community Health Survey. The residence in the underserved emergency medical services areas is defined as being targeted to the residents in 101 areas notified in 『Emergency Medical Service Act』. The awareness of MI symptoms was classified as being aware of all five items of MI symptoms. Adjusted odds ratios (aOR) and 95% confidence intervals (CI) are computed by multivariable logistic regression. Results: Of the total 195,246 subjects, 43.6% were aware of MI symptoms (43.7% and 43.6% of underserved and deserved emergency medical services areas, respectively). The residence in the underserved emergency medical services areas was associated with the awareness of MI symptoms (aOR 1.15, 95% CI=1.11-1.18). In addition, this study has found that gender, age, education level, income level, occupation, subjective stress level, drinking frequency, current smoking, and diagnosis of hypertension and diabetes were factors influencing the awareness of MI symptoms. Conclusions: Continuous efforts are needed to increase the awareness of MI symptoms for the residents in the underserved and deserved emergency medical services areas. Education and promotion should be conducted in consideration of gender, age, education level, income level, and occupation to improve the awareness of MI symptoms.