Monthly COVID-19 Vaccination Coverage by Age Group and Jurisdiction

Monthly cumulative vaccination coverage data is aggregated from U.S. jurisdictions' Immunization Information Systems and submitted to the CDC. The dataset tracks persons who received one or more COVID-19 vaccine doses, segmented by season, age group, and jurisdiction. It is published by data.cdc.gov and was last updated in March 2026.

Use Cases

• Analyze vaccination rate trends over time using the Month and current_season columns.
• Compare coverage disparities across jurisdictions using the Jurisdiction and Estimate columns.
• Assess vaccination uptake by demographic segments using the Age_group_label and Child or adult columns.
• Calculate vaccination percentages for specific populations using the Numerator and Population columns.

Strengths

• Data is aggregated from official Immunization Information Systems (IIS) across multiple U.S. jurisdictions.
• Provides demographic segmentation via Age_group_label and Child or adult columns.
• Offers cumulative monthly estimates for tracking progress over a season.

Limitations

• National estimates are not provided as not all U.S. jurisdictions report data to the CDC.
• Sample size, row count, and specific time range are not specified in the provided metadata.

Provenance

Source

data.cdc.gov, sourced from U.S. jurisdictions' Immunization Information Systems (IIS).

Collection Method

Aggregated monthly submissions from jurisdictions to the CDC.

Time Range

Cumulative from July 1 of each season through the reported month.

Freshness

Updated monthly; last updated March 2026.

Geography

United States, including states, some localities, and territories that report data.