In the home search on Trulia, there is a selection of foreclosure. These properties come from Realtytrac and include Notice of Defaults. Homes on the site do not include an address without having a Realtytrac account but do include street name. I believe most homes also map correctly. This will at least help you narrow down the area for any home before you need to physically check at the clerks office.
This information is publicly available through your local county government office. It is also published in local newspapers, and sometimes taped to a foreclosure's door in many localities.
Hope this helps!
Tni LeBlanc, JD, MA, e-PRO