I'll walk you through where you can update the information, gs4.

You can change the business address or work location in the Payroll Settings section in QuickBooks Online. Here's how: 

1. Click the Gear icon in the upper-right hand corner, then click Payroll Settings.
2. Look for Work Locations under the Company and Account section and click on it.
3. Click the address that you need to change.
4. Enter the new address and click Save.

See my screenshots below for additional details. You can also reply to this thread if you need an extra help.