Over a two-month period, contributed to the BigData2025-Rev/p3 repository by enhancing data pipelines and developing analytics tools focused on demographic data. Delivered features in Python and PySpark, including improvements to the DataCleaner pipeline that mapped region codes to descriptive labels, categorized urban and rural areas, and introduced a total adult population metric to improve downstream analytics. Developed a PySpark-based script for regional population analysis, which read ORC files, filtered and aggregated data by year and region, and exported race-based breakdowns as CSVs. Work emphasized data cleaning, transformation, and engineering, supporting scalable, interpretable demographic reporting and future analytical extensions.