U.S. COVID-19 County Data Source URLs

URLs for state and county-level web sources used by the CDC to compile aggregate COVID-19 case and death counts. The collection process compiled data from state-wide and individual county sources, using a composite approach to select maximum reported values. This dataset is archived and was last updated by data.cdc.gov in February 2025.

Use Cases

• Audit data provenance by mapping State and County names to their original Source1, Source2, and Source3 URLs.
• Reconstruct the CDC's composite data collection methodology by analyzing source overlap for specific State and County entries.
• Identify data gaps by checking for null entries in the Source columns for particular State or County jurisdictions.

Strengths

• Covers all U.S. states plus select jurisdictions and territories.
• Documents the composite methodology for reconciling local and state-level sources.

Limitations

• Contains no actual case or death count metrics, only source URLs.
• Dataset is archived and no longer updated, reflecting data collection methods only up to May 2023.

Provenance

Source

data.cdc.gov

Collection Method

URLs were compiled from jurisdictional and state partners for the CDC's aggregate county data collection process.

Time Range

Covers the period of active COVID-19 Public Health Emergency data collection, ending May 2023.

Freshness

Archived; last update recorded as February 2025, but data collection ceased in May 2023.

Geography

United States, including states, select jurisdictions, and territories at the county level.