California ZIP Code COVID-19 Vaccine Coverage and Equity Metrics

Data shows full, partial, and at least one dose vaccine coverage rates by ZIP Code Tabulation Area (ZCTA) for California. It includes Vaccine Equity Metric score quartiles that combine health index measures with state-derived scores. The dataset extends back to January 5, 2021.

Use Cases

• Analyze vaccine coverage rates by ZCTA to identify geographic disparities in full, partial, and at least one dose metrics.
• Map Vaccine Equity Metric quartiles against coverage rates to assess the relationship between community health conditions and vaccination progress.
• Track changes in ZCTA-level vaccination denominators over time as eligibility criteria shifted from age 16+ to all ages.

Strengths

• Includes Vaccine Equity Metric quartiles derived from the Healthy Places Index and state scores.
• Historical data extends back to January 5, 2021, capturing policy and eligibility changes.
• Data sources include the California Immunization Registry and American Community Survey 2015-2019 5-Year data.

Limitations

• Excludes doses administered by federal agencies like Indian Health Service and Veterans Health Administration.
• Vaccination coverage for some ZTCAs may exceed 100% due to reporting discrepancies or population estimate issues.
• CDPH-derived quartiles for the Vaccine Equity Metric are not indicative of the original HPI score for excluded zip codes.

Provenance

Source

California Department of Public Health via Data.gov

Collection Method

Aggregated from the California Immunization Registry and American Community Survey data.

Time Range

From January 5, 2021 onward

Freshness

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Geography

State of California, by ZIP Code Tabulation Area (ZCTA)