Here is a link for more details :-
http://www.mortgagemarketguide.com/download/2009loanlimits.pdf
A snippet from the report for New Jersey, based on County:-
Metropolitan Statistical Areas, Micropolitan Statistical Areas and Rural Counties where Loan Limits are Set Based on High-Cost Area Provisions of HERA
(Areas where one-unit loan limit exceeds $417,000 in continental U.S. or is above $625,500 for locations in Alaska, Hawaii, Guam, and U.S. Virgin Islands)
Fannie Mae and Freddie Mac conforming loan limits for the high cost areas below may not exceed the corresponding levels listed. These loan limits apply to loans purchased between January 1, 2009 and December 31, 2009. For a one-unit property, the maximum loan limit is calculated as 1.15 times the median house price for the highest priced county in the property’s metropolitan or micropolitan area or the median house price for the property’s county if it is in a rural county. Regardless of the area median home price, the loan limit cannot, in general, exceed $625,500 (1.50 times the 2009 conforming loan limit). The exceptions are properties in Alaska, Hawaii, Guam, and the Virgin Islands, where that range is 50 percent higher ($625,500 to $938,250). The 2009 conforming loan limit of $417,000 is in place everywhere else. Loan limits for 2-4 unit properties are proportional to the 1-unit limits.
NJ New York-Northern New Jersey-Long Island, NY-NJ-PA (Metropolitan Area)
Component Counties (NJ):
Bergen, Essex, Hudson, Hunterdon, Middlesex, Monmouth, Morris, Ocean, Passaic, Somerset, Sussex, Union
$625,500 *
*Limit 1- Unit property
Source ;-http://www.ofheo.gov/media/cll/HighCostLoanLimits2009.pdf


