Are there any income data available at the postal code level. If yes, can you point me in the right direction?
The Profile for Canada, Provinces, Territories and Forward Sortation Areas, 2006 Census (94-581-XCB2006003) provides income data at the FSA level (first three characters of the postal code).
The 2006 Census Census Tract Profiles include income data and have a search by postal code option which may be of interest to your client.
Please let me know if these products don't meet your user's needs and I will be pleased to look into this further and to recommend other products.