Variables, and the values they represent, may change over time. If you have used variables in prior year releases, check the ACS product changes webpage for source table changes. If the variable you have been using comes from a table that has changed from the prior year, check the variables list (variables.html) and compare the variable concept and label to be sure you are requesting the correct estimate. For information on these changes, visit:
Using the Census API with the American Community Survey Webinar
Discover how to access ACS datasets through the U.S. Census Bureau's Application Programming Interface (API) to create custom apps.
Need help? Check out our Developer Forum to submit questions, share your apps, and provide feedback.