Formatting Large List of Names & Addresses

If the list is very regular, you could use GREP and next-style to do a first formatting pass.

I'm sure a script could be developed as well. My approach, though, would probably be to use Word and some on the fly macros to apply styles, then import.

@Launch Design

Import / place this list as TABLE - otherwise, you're in big trouble. 

To each column - apply dedicated ParaStyle. 

Convert this table to text - with both separators as "paragraph". 

Run Text  Find&Change - "^p^p" -> "^p".

What is the source of the VLL? If it is in spreadsheet you might start with a data merge and then thread all the resulting frames. Apply char styles during data merge setup.