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U.S. Population Density (1999)
This project visualizes population density across the contiguous United States using a choropleth classification scheme that highlights the 20% most and least densely populated states. By normalizing population data by land area, the map reveals clear regional settlement patterns while incorporating capitals, state boundaries, and major lakes for context. The result is a cartographic snapshot of how population distribution varied across the U.S. at the close of the 20th century.
Key Metrics
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Created a choropleth map of population density using normalized 1999 population by state area.
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Classified states into five ranges to emphasize the 20% densest and 20% least dense.
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Added state capitals with labels and symbolized major U.S. lakes for geographic context.
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Used state abbreviations for clarity without overcrowding the map.
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Exported a final professional-quality map to 300 dpi PDF with neatline, scale bar, north arrow, and legend.
Insights
Analysis
Which U.S. states had the highest population density in 1999, and how do they compare to the least dense?
Economics
How do regional settlement patterns (e.g., Northeast vs. Mountain West) reflect historical and economic development?
Reflection
What role do geography and land area play in shaping state-level density differences?
Certifications
Through Esri’s Basics of Map Projections course, Allison deepened her knowledge of cartographic principles that underpin modern GIS work. By exploring how projections shape the accuracy and interpretation of maps, she expanded her skills in transforming raw geographic data into clear, reliable visual narratives.