Due to the increased awareness surrounding the 2010 Census activities, response to the American Community Survey (ACS), a continuous survey conducted every month by the Census Bureau, was expected to be affected during early 2010. The 2010 ACS mail check-in rates were compared to the 2009 rates to provide an assessment of the impact that the 2010 Census publicity may have had on public awareness and cooperation and also to provide feedback on changes in the ACS workloads due to the 2010 Census. Mail check-in rates were also examined by each of the eight segmentation groups to determine if some groups benefitted more from the advertising used to promote the 2010 Census. The differences in the 2010 and 2009 rates at the national level as well for each of the segmentation groups show a clear trend during the first half of 2010.

In addition to tracking the 2010 ACS mail response, ACS mail form completeness was also studied as another measure of respondent cooperation. Differences in the completeness of the 2009 and 2010 ACS mail forms were considered at the national level and for each of the eight segmentation groups. As with the ACS mail check-in rates, a common theme can be seen that indicates the willingness of the American public to fully participate in the ACS.