This covers how address fields work in Zoho CRM on a standard, uncustomised account, since this is one of the more commonly misunderstood areas once Leads start converting into Accounts and Contacts.
A Lead has a single set of address fields: Street, City, State or Province, Postal Code, and Country. UK customers often expect a County field specifically, but standard Zoho CRM only offers Province or State, which UK-based teams typically repurpose to record the county instead.
When a Lead is converted, its single address becomes the Billing Address on the new Account record. Contacts and Deals do not get their own address by default from this process, since a standard Contact record inherits its address by reference from its parent Account rather than holding a separate copy.
Exactly which Lead field maps to which field on conversion is controlled by Lead Conversion Mapping, found under Setup, then Customization, then Modules and Fields, then Leads, then Lead Conversion Mapping. This is also where you'd fix a common follow-up problem: if you've added a custom address-related field to Leads, it won't automatically map anywhere on conversion unless you either configure that mapping manually, or, when creating the field in the first place, use the "Also Create For" option to set up the destination field and its mapping in one step.
If your business needs a separate Shipping Address distinct from the Billing Address, this needs to be added as a custom field set on the Accounts module, since it isn't part of the standard, uncustomised layout.