Rapid urbanization and demographic expansion have significantly transformed Ahmedabad District into one of the fastest-growing regions in Gujarat. Accurate population forecasting is therefore essential for effective planning, infrastructure development, and policy formulation. This study estimates the population of Ahmedabad District for the period 2022–2027 using both curve estimation models (quadratic, growth, exponential) and time-series analysis (ARIMA (1,2,0)). Statistical measures such as R², standard error, and significance levels are used to evaluate model performance. The quadratic model, with an R² value of 0.999, emerges as the most reliable model for medium-term projections, while ARIMA captures short-term fluctuations. The results highlight variations in projected growth patterns across models and emphasize the importance of selecting appropriate forecasting techniques for realistic demographic planning.