You can take the information in a mailing label document and convert it to a column-based spreadsheet in Excel provided you you know how to prepare the document.

Using the Excel Text to Column feature, you can choose how to split the column up, fix the width, or split at each comma, period, or other characters.

Learn how to split one column into multiple columns in Excel. Use Text to Columns and Delimited options and use Delimiters to separate data in Excel.