Where does site data come from?
The data comes from a variety of state and national sources, including the National Cancer Institute, the Centers for Disease Control, the American Community Survey and many state-specific sources. Most of the data is reported on an annual basis. Each indicator page includes the source of the data, the URL of the source, and when this data was last updated.
Below is a list of data sources that have historically been consistent in the frequency with which they update. This list can help provide a general update timeline for those curious about when the next update for a specific source will be. Please note that this list is only comprised of national data sources. State specific data source update frequencies vary across state.
| Source | Update Frequency |
| American Community Survey (ACS) 1-Year |
Annual |
| American Community Survey Supplemental Estimates | Annual |
| American Community Survey (ACS) 5-Year | Annual |
| American Lung Association (ALA) | Annual |
| Bureau of Labor Statistics (BLS) | Quarter |
| BRFSS | Varies by State |
| CDC (WONDER) | Annual |
| CDC (Diabetes Atlas) | Annual |
| CDC (Heart Disease and Stroke Atlas) | Annual |
| Centers for Medicare & Medicaid Services (CMS) | Annual |
| Claritas Consumer Buying Power | Annual |
| County Health Rankings (CHR) | Annual (varies by indicator) |
| County Business Patterns | Annual |
| Environmental Protection Agency (EPA) | Annual |
| Fatality Analysis Reporting System (FARS) | Annual |
| Feeding America | Annual |
| Food Atlas (USDA) | Annual (varies by indicator) |
| Institute for Health Metrics and Evaluation (IHME) | Annual |
| National Cancer Institute (NCI) | Annual |
| National Center for Education Statistics (NCES) | Annual |
| National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention (NCHHSTP) | Annual |
| National Survey on Drug Use and Health (NSDUH) | Every Other Year (Even Years) |
| Small Area Health Insurance Estimates (SAHIE) | Annual |
| U.S. Census Quickfacts | Annual |
| USDA Census of Agriculture | Every 5 Years (last update: 2014) |
| Youth Risk Behavior Survey (YRBS) | Every Other Year (Even Years) |
