Note about downloading ACS Summary Files using Internet Explorer version 7 or earlier.
 
Microsoft has installed a limitation in IE 7 and earlier versions in terms of the size of the files that can 
be download. IE 7 cannot download files larger than 4GB. IE 6 cannot download files larger than 2 GB.
The file Tracts_Block_Groups_Only.zip will generate an error if using IE 6 due to the 2.6 GB file size. 
The file All_Geographies_Not_Tracts_Block_Groups.zip will generate an error if using IE6 or IE 7 due to 
the 7.5 GB file size. 
 
Please note that there are no limitations when using IE 8 and current versions of Firefox. Other older 
browsers may also contain the same limitations as described above for IE6 and IE7. 

Workarounds:
 
(1) Download the large files using either an FTP client, Internet Explorer 8, or the current version of Firefox.

(2) Order a free DVD set. The entire ACS 5-year Summary File is available in comma delimited text format on a set of DVDs. 
Email your name and mailing address to acso.dvd.order@census.gov for more information.