Page setup

Since you chose this format when setting your layout, your map has a landscape orientation (the long edge is horizontal). You will keep this orientation for this map layout, but for future reference, this can be changed in the Layout Properties:

1. Right-click the virtual page outside of any selected data frames and click Properties. Select Page Setup (you can also access this from the Page Setup section of the layout ribbon). Verify your page size and other settings here:

While we're here, let's update the name of our layout:

1. In Layout Properties, select General on the left. Change the Name to US Counties Layout. Click OK and note that the name updates on the tab at the top of the layout window.