My Geographic Map of Florida COVID-19 Cases by ZIP Code
Introduction
For this mapping exercise, I chose to visualize Florida COVID-19 data from 2020, specifically examining the distribution of cases across ZIP codes throughout the state. This dataset provides a comprehensive view of how the pandemic affected different geographic regions of Florida during the early stages of the outbreak.
The map reveals fascinating patterns about population density, urban centers, and the geographic spread of COVID-19 cases across the Sunshine State.
Dataset and Process
Data Source: Florida COVID-19 data by ZIP Code(2020).
.https://drive.google.com/file/d/1fNyh8DCZAkJuXGEi0XuQGjKpR5lsGPEK/view
Challenges Faced
My biggest hurdle was Tableau Public repeatedly crashing. Since starting this project on September 1st, the app consistently froze and closed whenever I dragged fields to create the map. After multiple restarts and attempts, it finally worked properly.
The dataset used ZIP codes rather than street addresses, but this actually worked better for visualizing COVID patterns across geographic regions.
The Geographic Visualization
The map displays 1,005 ZIP codes across Florida, with each point color-coded to represent the intensity of COVID-19 cases. The darker blue dots indicate areas with higher case counts, while lighter dots represent areas with fewer cases.
Would point size or color scales help?
Yes. Adding point size variation would create dual-encoding - making high-case areas both darker AND larger. A red color scale might show differences more clearly than blue.
Could adding text labels or tool tips guide the viewer?
Definitely. City labels for Miami, Orlando, Tampa, and Jacksonville would provide geographic context. Tooltips showing ZIP code and exact case counts would make the data more accessible.
How does proximity or similarity group patterns?
Nearby ZIP codes show similar case levels, creating visible urban clusters. The color coding groups areas by intensity, revealing Florida's population corridors and metropolitan boundaries through natural clustering patterns.

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