At a glance
Children and Adults COVID-19 Vaccination Administration and Coverage
COVID-19 vaccination coverage for children and adults is assessed through U.S. jurisdictions' Immunization Information Systems Resources (IIS) data, submitted from jurisdictions to CDC monthly in aggregate by age group.
COVID-19 vaccination coverage estimate numerators include the number of people receiving at least one dose of the updated 2024─25 COVID-19 vaccine since August 2024, based on information that state, territorial, and local public health agencies report to CDC. Some jurisdictions may report data submitted by tribes; however, CDC is unable to report estimates by tribe. Estimates include persons who are deceased but received a vaccination since August 2024. People receiving doses are attributed to the jurisdiction in which the person resides unless noted otherwise. Quality and completeness of data may vary across jurisdictions. COVID-19 vaccination coverage denominators are obtained from 2020 U.S. Census Bureau population estimates.
Monthly estimates shown are cumulative, reflecting all persons vaccinated from August 2024 through a given month. Cumulative estimates include any historical data reported since the previous submission. National estimates are not presented since not all U.S. jurisdictions are currently reporting their IIS data to CDC. Jurisdictions reporting data to CDC include U.S. states, some localities, and territories.
Because IIS data are intended to capture all vaccinations administered within a jurisdiction rather than a sample, standard errors are not calculated.
Laws and policies regarding the submission of vaccination data to an IIS vary by state, which may impact the completeness of vaccination coverage reflected for a jurisdiction.
Coverage estimates based on IIS data are expected to differ from National Immunization Survey (NIS) estimates for children and adults because NIS estimates are based on a sample that may not be representative after survey weighting and vaccination status is determined by survey respondent rather than vaccine records or administrations, and quality and completeness of IIS data may vary across jurisdictions. In general, NIS estimates tend to overestimate coverage due to overreporting and IIS estimates may underestimate coverage due to incompleteness of data in certain jurisdictions.
IIS coverage estimates reported on jurisdictions' dashboards may use different criteria for numerators and denominators (e.g. jurisdictions may use IIS-based denominators instead of census population) and thus may differ from those reported on CDC's Weekly Flu Vaccination dashboard.
- Figure 4A. Monthly Cumulative Number and Percent of Children 6 Months–17 Years Who Received 1+ updated 2024-25 COVID-19 Vaccination Doses*,† by Season, Age Group, and Jurisdiction, United States. Data Source: Jurisdictional Immunization Information Systems (IIS).
- Figure 4B. Monthly Cumulative Number and Percent of Children 6 Months–17 Years Who Received 1+ updated 2024-25 COVID-19 Vaccination Doses and Comparison between 2024─25 and 2023─24 Seasons*,†, by Age group and Jurisdiction, United States. Data Source: Jurisdictional Immunization Information Systems (IIS).
- Figure 4C. Monthly Cumulative Number and Percent of Adults 18 Years and Older Who Received 1+ updated 2024─25 COVID-19 Vaccination Doses*,† by Season, Age Group, and Jurisdiction, United States. Data Source: Jurisdictional Immunization Information Systems (IIS).
- Figure 4D. Monthly Cumulative Number and Percent of Adults 18 Years and Older Who Received 1+ updated 2024─25 COVID-19 Vaccination Doses and Comparison between 2024─25 and 2023─24 Seasons*,†, by Age group and Jurisdiction, United States. Data Source: Jurisdictional Immunization Information Systems (IIS).
Download data for Figures 4A & 4C
Download data for Figures 4B & 4D
*Some jurisdictions' data are not displayed if they were not available by data retrieval timelines. Data displayed include both valid and invalid doses, persons with last known addresses in the jurisdiction, and persons with unknown addresses within the jurisdiction. Data excludes people whom a provider has indicated have left the jurisdiction. A period in time assessment is used to calculate COVID-19 vaccination coverage which requires all individuals to be at least 6 months old by October 1, 2024. Number of doses administered and coverage estimates for a given month may change over time for some jurisdictions. New York City (New York) and Philadelphia (Pennsylvania) report data separately from their respective states. New York state data exclude New York City and Pennsylvania state data exclude Philadelphia County. Chicago is a funded jurisdiction; however, their data are reported with Illinois due to lack of a comparable denominator to calculate coverage.
†Figure 4A and 4C (line graph) will not display any lines for jurisdictions whose data have not been submitted to CDC; these jurisdictions appear gray in the Figures 4B and 4D. Some Pacific Island jurisdictions' vaccination programs may be aligned to regional virus circulation patterns (i.e., they may vaccinate on a different schedule than the continental U.S.).