International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

This study presents a data-driven exploration of the demographic evolution of Veliko Tarnovo from 1878 to 2024. By compiling population data from official census records and statistical yearbooks, the project builds a unified dataset covering nearly 150 years of urban development. The analysis focuses on population dynamics by gender and total population growth, identifying key periods of expansion and decline. The visualizations were developed using Power BI, providing an interactive and intuitive dashboard that enables users to explore trends, compare periods, and observe long-term demographic shifts. The study highlights a sharp population increase during the socialist era (1950s–1980s), followed by a significant decline in the post-1990 period, interpreted in the context of socioeconomic transformations and migration processes. The research offers both historical insight and a modern methodological approach, demonstrating how business intelligence tools can be effectively applied in urban demographic analysis and digital heritage projects.