| Immunization Action Plan (IAP) Areas Separately Sampled in the National Immunization Survey, Q1/2005-Q4/2005 | |
| IAP | Major City Included |
| AL-Jefferson County | Birmingham |
| AZ-Maricopa County | Phoenix |
| CA-Alameda County | Oakland |
| CA-Los Angeles County | Los Angeles |
| CA-San Bernardino County | San Bernardino |
| CO-Denver* | Denver |
| District of Columbia | Washington, D.C. |
| FL-Duval County | Jacksonville |
| GA-Fulton/DeKalb Counties | Atlanta |
| IL-City of Chicago | Chicago |
| MD-City of Baltimore | Baltimore |
| MI-City of Detroit | Detroit |
| MO-St. Louis City/County | St. Louis |
| NV-Clark County | Las Vegas |
| NJ-City of Newark | Newark |
| NY-City of New York | New York |
| OH-Cuyahoga County | Cleveland |
| OH-Franklin County | Columbus |
| PA-Philadelphia County | Philadelphia |
| TN-Davidson County | Nashville |
| TN-Shelby County | Memphis |
| TX-Bexar County | San Antonio |
| TX-City of Houston | Houston |
| TX-Dallas County | Dallas |
| TX-El Paso County | El Paso |
| WA-King County | Seattle |
| WI-Milwaukee County | Milwaukee |
| * Adams, Arapahoe, Denver and Douglas Counties | |