The 2010 rebound for the zip code is probably an anomaly based on a small sample size. Sussex County values are basically stable from 2009 to 2010. Median for the county was $257,000 in 2009 and is $250,000 for the first 10 months of 2010.
So if you bought in 2008, your home value is down about 10% plus or minus in general. However, every home is an individual case based on location, condition, recent improvements, etc.
Century 21 Joe Tekula Realtors
Phone (direct): (973) 584-4235
Coolest map-based home search: http://www.marcpaolella.com
I am not sure I have enough information to answer your question. Pricing can be very, very local, right down to a particular neighborhood. If you contact me we can discuss your question in detail and I will be happy to help you.