Postal & Address Guides
Clear, practical answers to common questions about international address formatting, checkout form fields, postal codes, and shipping rules.
Form Fields & Definitions
Clear rules for standard checkout fields like Address Line 2, State/Province, City, and Billing vs Shipping.
What is Address Line 2?
Address Line 2 is an optional field on checkout and shipping forms used for apartment, suite, unit, or floor numbers. Learn what to put in Address Line 2 with visual examples.
What is Address Line 1?
Address Line 1 is the primary required address field on checkout forms used for your main street address, house number, and street name. Learn how to format it.
Address Line 1 vs. Address Line 2
Learn the exact differences between Address Line 1 and Address Line 2 with examples, comparison tables, and form placement rules.
What to Put for State/Province?
Stuck on a checkout form asking for State or Province? Learn what to enter for countries like the UK, UAE, Pakistan, Singapore, and Romania.
What to Put for State in Countries with No States?
Stuck on a required State field for a country with no states like the UK, Singapore, or UAE? Learn how to fill or bypass mandatory State/Province inputs.
City vs Suburb vs District in Address Forms
Confused by City, Suburb, or District fields on international shipping forms? Understand which field to fill based on your country's address format.
Billing Address vs Shipping Address
What is the difference between Billing Address and Shipping Address? Learn how card verification (AVS) works and when they can be different.
Apartments, Suites & PO Boxes
How to write apartment numbers, postal abbreviations (Apt, Ste, Unit), PO Boxes, and Care Of (c/o) details.
Can You Put PO Box in Address Line 2?
Can you enter a PO Box in Address Line 2? Discover when to put PO Box in Line 1 vs Line 2, and why FedEx/UPS reject PO Box deliveries.
How to Write Apartment & Suite Numbers
Learn how to write apartment, suite, unit, and floor numbers on shipping labels. See standard postal abbreviations (Apt, Ste, Unit, #) and placement rules.
What Does C/O Mean in an Address?
What does C/O mean in an address? Learn how to format 'Care Of' (c/o) for packages sent to guests, employees, or family members.
Vendor & Store Checkout Forms
Store-specific guides for shopping on Shein, AliExpress, Amazon, Apple ID, and US digital storefronts.
How to Fill Address Line 1 & 2 on Shein, AliExpress & Amazon
Having trouble filling Address Line 1 and Line 2 on Shein, AliExpress, or Amazon? Learn how to format international addresses for smooth delivery.
US Address Format for Apple ID & Digital Stores
Need to fill a US address for Apple ID, iTunes, Steam, or US billing? Learn the standard US address format, 2-letter state codes, and 5-digit ZIP codes.
Postal & Regional Rules
Country-specific postal code quirks, UK address formats, and zero-postcode country workarounds.
ZIP Code for Dubai & UAE Addresses
Does Dubai or the UAE have a ZIP code? Learn how to fill mandatory postal code fields for UAE shipping addresses on Amazon, Shein, and DHL.
UK Address Format Guide
Master the UK address format: Learn where to put Building Name, House Number, Post Town, County, and UK Postcode on online shipping forms.