At a glance
2023 CHILD Participation Table and Map
Percentage of U.S. Children < 6 years with 2+ Immunizations in IIS
Percentage of children aged <6 years participating in an immunization information system (IIS) in the United States (including all 50 states, five cities, the District of Columbia, and eight territories) in 2023.
National coverage: 100% (excluding territories)
Map of this data (printable version) [319 KB, 1 page]
| State/City | Percentage |
|---|---|
| Alabama | 67.5% |
| Alaska | 89.1% |
| Arizona | 104.0% |
| Arkansas | 99.9% |
| California | 97.9% |
| Chicago, IL | 103.7% |
| Colorado | 104.9% |
| Connecticut | 102.8% |
| DC | 118.8% |
| Delaware | 104.1% |
| Florida | 101.0% |
| Georgia | 103.5% |
| Hawaii | 71.4% |
| Houston, TX | 132.9% |
| Idaho | 94.4% |
| Illinois* | 98.8% |
| Indiana | 97.9% |
| Iowa | 97.0% |
| Kansas | 93.0% |
| Kentucky | 100.0% |
| Louisiana | 105.3% |
| Maine | 98.7% |
| Maryland | 101.4% |
| Massachusetts | 109.1% |
| Michigan | 96.2% |
| Minnesota | 96.9% |
| Mississippi | 105.0% |
| Missouri | 90.8% |
| Montana | 92.9% |
| Nebraska | 96.2% |
| Nevada | 101.8% |
| New Hampshire | 83.2% |
| New Jersey | 99.9% |
| New Mexico | 101.3% |
| New York* | 101.7% |
| New York City, NY | 109.4% |
| North Carolina | 103.1% |
| North Dakota | 91.6% |
| Ohio | 94.5% |
| Oklahoma | 92.9% |
| Oregon | 99.3% |
| Pennsylvania* | 92.8% |
| Philadelphia, PA | 135.5% |
| Rhode Island | 103.4% |
| San Antonio, TX | 92.5% |
| South Carolina | 105.6% |
| South Dakota | 97.3% |
| Tennessee | 98.7% |
| Texas* | 103.5% |
| Utah | 101.2% |
| Vermont | 102.1% |
| Virginia | 108.0% |
| Washington | 100.9% |
| West Virginia | 94.8% |
| Wisconsin | 96.5% |
| Wyoming | 101.4% |
| Territories | Percentage |
|---|---|
| American Samoa | 120.1% |
| Guam | 52.4% |
| Marshall Islands | 62.4% |
| Federated States of Micronesia | 101.8% |
| Northern Mariana Islands | 82.2% |
| Palau | 87.5% |
| Puerto Rico | 97.1% |
| Virgin Islands | 62.8% |
Footnotes
- City-based IIS participation rates are reported separately from their respective states; state rates do not include city data in their values.
Reported annual fluctuations in child participation may be due to programmatic and/or technical changes to the immunization information system. The denominator used to calculate child participation numbers are drawn from the 2023 Census estimates for each state and city.
Source: Immunization Information System Annual Report, CY2023
2023 ADOLESCENT Participation Table and Map
Percentage of U.S. Adolescents 11-17 years with 2+ Adolescent Immunizations in IIS
Percentage of adolescents aged 11-17 years participating in an immunization information system (IIS) in the United States (including all 50 states, five cities, the District of Columbia, and eight territories) in 2023.
National coverage: 90% (excluding territories)
Map of this data (printable version) [719 KB, 1 page]
| State/City | Percentage |
|---|---|
| Alabama | 64.8% |
| Alaska | 77.6% |
| Arizona | 104.7% |
| Arkansas | 95.6% |
| California | 81.6% |
| Chicago, IL | 105.0% |
| Colorado | 93.0% |
| Connecticut | 87.9% |
| DC | 118.8% |
| Delaware | 93.0% |
| Florida | 71.0% |
| Georgia | 115.3% |
| Hawaii | 63.1% |
| Houston, TX | 145.2% |
| Idaho | 78.0% |
| Illinois* | 94.1% |
| Indiana | 92.4% |
| Iowa | 88.0% |
| Kansas | 86.8% |
| Kentucky | 90.1% |
| Louisiana | 96.2% |
| Maine | 113.2% |
| Maryland | 91.1% |
| Massachusetts | 103.8% |
| Michigan | 86.6% |
| Minnesota | 88.3% |
| Mississippi | 90.5% |
| Missouri | 76.6% |
| Montana | 80.2% |
| Nebraska | 85.9% |
| Nevada | 93.8% |
| New Hampshire | 69.9% |
| New Jersey | 98.8% |
| New Mexico | 96.6% |
| New York* | 100.0% |
| New York City, NY | 116.0% |
| North Carolina | 90.0% |
| North Dakota | 85.7% |
| Ohio | 82.3% |
| Oklahoma | 76.1% |
| Oregon | 86.4% |
| Pennsylvania* | 87.9% |
| Philadelphia, PA | 110.9% |
| Rhode Island | 93.0% |
| San Antonio, TX | 88.1% |
| South Carolina | 88.4% |
| South Dakota | 96.7% |
| Tennessee | 75.0% |
| Texas* | 93.7% |
| Utah | 83.1% |
| Vermont | 92.5% |
| Virginia | 116.1% |
| Washington | 95.3% |
| West Virginia | 84.2% |
| Wisconsin | 84.7% |
| Wyoming | 85.2% |
| Territories | Percentage |
|---|---|
| Guam | 70.5% |
| Marshall Islands | 68.6% |
| Federated States of Micronesia | 102.0% |
| Northern Mariana Islands | 92.3% |
| Palau | 60.8% |
| Puerto Rico | 91.7% |
| Virgin Islands | 54.6% |
Footnotes
- City-based IIS participation rates are reported separately from their respective states; state rates do not include city data in their values.
Reported annual fluctuations in child participation may be due to programmatic and/or technical changes to the immunization information system. The denominator used to calculate child participation numbers are drawn from the 2023 Census estimates for each state and city.
Source: Immunization Information System Annual Report, CY2023
2023 ADULT Participation Table and Map
Percentage of U.S. Adults 19+ years with 1+ Adult Immunizations in IIS
Percentage of adults aged 19+ years participating in an immunization information system (IIS) in the United States (including all 50 states, five cities, the District of Columbia, and eight territories) in 2023.
National coverage: 100% (excluding territories)
Map of this data (printable version) [719 KB, 1 page]
| State/City | Percentage |
|---|---|
| Alabama | 80.6% |
| Alaska | 95.1% |
| Arizona | 108.2% |
| Arkansas | 120.4% |
| California | 91.5% |
| Chicago, IL | 116.7% |
| Colorado | 113.1% |
| Connecticut | 99.3% |
| DC | 121.1% |
| Delaware | 111.7% |
| Florida | 123.4% |
| Georgia | 128.5% |
| Hawaii | 73.8% |
| Houston, TX | 65.5% |
| Idaho | 100.1% |
| Illinois* | 111.5% |
| Indiana | 109.4% |
| Iowa | 94.0% |
| Kansas | 116.9% |
| Kentucky | 102.8% |
| Louisiana | 107.7% |
| Maine | 104.7% |
| Maryland | 86.0% |
| Massachusetts | 137.6% |
| Michigan | 105.6% |
| Minnesota | 123.3% |
| Mississippi | 103.2% |
| Missouri | 105.7% |
| Montana | 111.2% |
| Nebraska | 114.3% |
| Nevada | 131.6% |
| New Hampshire | 82.7% |
| New Jersey | 21.1% |
| New Mexico | 112.9% |
| New York* | 102.5% |
| New York City, NY | 119.4% |
| North Carolina | 71.5% |
| North Dakota | 94.4% |
| Ohio | 102.3% |
| Oklahoma | 100.9% |
| Oregon | 126.8% |
| Pennsylvania* | 108.9% |
| Philadelphia, PA | 129.3% |
| Rhode Island | 89.8% |
| San Antonio, TX | 58.9% |
| South Carolina | 104.8% |
| South Dakota | 117.6% |
| Tennessee | 94.6% |
| Texas* | 48.6% |
| Utah | 119.5% |
| Vermont | 110.0% |
| Virginia | 138.2% |
| Washington | 118.2% |
| West Virginia | 111.1% |
| Wisconsin | 112.8% |
| Wyoming | 113.1% |
| Territories | Percentage |
|---|---|
| American Samoa | 140.8% |
| Guam | 106.2% |
| Marshall Islands | 76.1% |
| Federated States of Micronesia | 108.6% |
| Northern Mariana Islands | 109.5% |
| Palau | 58.2% |
| Puerto Rico | 99.5% |
| Virgin Islands | 73.8% |
Footnotes
- City-based IIS participation rates are reported separately from their respective states; state rates do not include city data in their values.
Reported annual fluctuations in child participation may be due to programmatic and/or technical changes to the immunization information system. The denominator used to calculate child participation numbers are drawn from the 2023 Census estimates for each state and city.
Source: Immunization Information System Annual Report, CY2023