Microsoft Windows XP

 

History, Downloads and Cookies
C:\Documents and Settings\{user}\Local Settings\Application Data\Google\Chrome\User Data\Default\
Cache
C:\Documents and Settings\{user}\Local Settings\Application Data\Google\Chrome\User Data\Default\Cache\

Microsoft Windows Vista / 7 / 8

 

History, Downloads and Cookies
C:\Users\{user}\AppData\Local\Google\Chrome\User Data\Default\
Cache
C:\Users\{user}\AppData\Local\Google\Chrome\User Data\Default\Cache\

Apple Macintosh OS X

 

History, Downloads and Cookies
/Users/{user}/Library/Application Support/Google/Chrome/Default/
Cache
/Users/{user}/Library/Caches/Google/Chrome/Default/Cache/

GNU / Linux

 

History, Downloads and Cookies
/home/{user}/.config/google-chrome/Default/
Cache
/home/{user}/.cache/google-chrome/Default/Cache/