Yes. You can export your site to a Wordpress-compatible format. This will export your pages, blog and their respective content.
Step 1 - Access the Import / Export Settings
Access the Settings within your Site Manager, then click Import/Export.
Step 2 - Select the Export Button
Click the Export Site button in the top of right of the Import/Export settings.
Click the Wordpress icon.
Step 3 - Choose Your Primary Blog (Optional)
Select your primary blog if you have added more than one blog page to your site.
NOTE: Unlike Squarespace, Wordpress does not allow a single installation to manage multiple blogs. If you have more than one Blog page added to your site, you will need to choose the Blog page that you want to export.
Step 4 - Export Your Content
Click the Export button.
Step 5 - Download the Exported File
Once your export has completed, click the Download button to save your file to your computer.
Note: The file exported will in .xml format that can be imported into a Wordpress installation.