This study aimed to analyze the influence of the existence of Larea-Rea Port on economic growth in Sinjai Regency and to evaluate its effectiveness in supporting regional economic activities. The study employed a mixed-method sequential explanatory approach using linear regression and Input–Output (I-O) analysis. Data were collected through observations, interviews, and secondary data, including Gross Regional Domestic Product (GRDP), cargo handling volume, and ship arrivals. The results indicated that the existence of Larea-Rea Port had not significantly affected regional economic growth, with a coefficient of determination (R²) of 0.007, although cargo handling activities showed a partial significant effect. The Input–Output analysis revealed that the port sector had strong intersectoral linkages and the highest output multiplier value of 6.67, indicating its strategic potential to stimulate regional economic growth. The limitation of this study was the limited scope of economic variables analyzed. These findings provide important implications for port infrastructure development policies and contribute to the understanding of the port’s role as a driver of regional economic growth.
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