Trudy,

Here is a summary of who usually needs to be notified:

Goverment and Public Agencies

• US Post Service (http://moversguide.usps.com)
• IRS (http://www.irs.gov/pub/irs-pdf/f8822.pdf)
• Department of Motor Vehicles
• Social Security Immigration Services (USCIS)
• County Tax Collectors (tax liens holders)

Financial Institutions

• Banks
• Credit Card Companies
• Investment Companies/Brokers
• Loan Agencies (car, mortgage)
• Financial Planner
• PayPal
• Credit Unions

Retirement Plans

• 401K
• IRA / Roth IRA / SEP

Insurance Agencies

• Health
• Life
• Home
• Auto / Motorcycle/ Boat

Utilities

• Electric company
• Gas / Oil company
• Municipal services - water, sewer, trash, recycling
• Telephone service provider
• Wireless phone provider
• Internet Service Provider
• Cable / Satellite Television company
• Website Hosting Provider

Professional Services

• Lawyers
• Accountant
• Doctors
• Dentist
• Veterinarian

Miscellaneous accounts

• Air miles memberships
• Auto mechanic
• Video Rental Stores
• Gardner / Lawn care services
• Department stores loyalty cards
• Pharmacy
• Dry Cleaner

Publications

• Newspapers
• Magazines
• Newsletters
• Professional Publications (eg. architect monthly)
• Fraternal Organizations (e.g. alumni news)

On-line

• Address in signatures on email services
• Social networking sites
• Shopping sites (e.g. Amazon.com, eBay)

Personal

• Your Friends and Family
• Children's Friends
• House of Worship
• Children's Schools
• Charitable Organizations (for tax receipts)