Ahvaz City, situated on the southern side of the Zagros folded belt, is classified as a region with moderate seismic hazard according to the Iranian Code of Practice for Seismic Resistant Design of Buildings (Standard No. 2800). Although the quaternary active Ahvaz fault traverses the city, can posing a significant seismic hazard in this area. This study employs an artificial statistical method to compile a comprehensive historical seismic catalog for Ahvaz City and its surrounding area. Under the assumption of stationarity, missing earthquakes are identified and incorporated into the catalog. A stochastic synthetic seismic catalog (SSSC) is constructed, including the initial catalog and added earthquakes. The seismicity parameters of the Gutenberg-Richter law are calculated, yielding values of a = 6.17 and b = 1.03. The results indicate a substantial number of missing earthquakes in the historical and early instrumental period in the Ahvaz region. This highlights the importance of incorporating these events into the seismic hazard assessment. The high number of missing earthquakes underscores the need for more comprehensive and accurate seismic hazard mapping in this region. Given its political and economic significance, Ahvaz City warrants increased attention in the fields of seismic hazard and risk assessment. The findings of this study can inform the development of more effective seismic risk mitigation strategies and enhance the resilience of the city's infrastructure and population.