The American Community Survey (ACS) has traditionally used a horizontal grid to collect basic demographic data. In other words, the household member names are listed down the left side of the page and the questions are listed across the top. Responses are provided in the cells of the grid formed by crossing the names by question. The 2010 Census collects these same data and plans to use a sequential format where each person’s data are in a distinct column, and within each column, the names are at the top and the questions are listed down the page. Ideally, the Census Bureau would like to be consistent in the wording and presentation of these questions between the ACS and the 2010 Census. Therefore, the ACS survey methods research area tested whether changing the layout for these questions affects response. More specifically, does changing from the grid to the sequential format affect data quality indicators and the response distributions for the basic demographic questions?