This idea has been merged into another idea. To comment or vote on this idea, please visit WEBFLOW-I-1999 More specific shipping zones - (i.e. States and Provinces).
A common ecommerce issue with all platforms is postcodes are not a good solution for determining shipping rates. In regional areas postcodes can cover multiple towns and large 100s kms areas. Webflow could shine by validating shipping based on a city. It would require an import of csv to be easy to admin.
Edit: Refer to table rate shipping plugins in Woocommerce. So one shipping region may include multiple cities / suburbs, This will work well for restaurants offering delivery as well although time slots are also required for busy online ordering,