How to Get Address Forms and Validation Right
Collecting and checking shipping and billing addresses so orders arrive and payments authorize.
Marcus Adeyemi
Where most projects go wrong
The usual mistakes:
- Blocking valid unusual addresses
- Separate fields for every address part
- No support for apartment numbers
- US-only forms on international stores
What good looks like instead
- Use standard autocomplete attributes
- Offer address lookup where useful
- Validate but allow overrides
- Support international formats
- Keep required fields minimal
Why it matters
Address errors cause failed deliveries and payment declines, and long address forms cause abandonment.
The specs that matter
| Measure | Figure |
|---|---|
| Autofill | autocomplete attributes let browsers fill address fields |
| USPS standards | the Postal Service publishes addressing standards |
| Validation | address verification catches typos and missing units |
| International formats | address structures differ by country |
Knowing when to hand it over
Tip: Bring in help when delivery failures or declines are common.
Where this comes from
- USPS Postal Explorer — Postal Addressing Standards
- Baymard Institute — Checkout usability research
The figures and practices above come from the sources listed.
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Where to go next
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