What should I use for map autocomplete in a checkout form?

For a checkout form, the best choice is usually Google Places Autocomplete or a similar address autocomplete service that returns structured address data.

Best default choice

Google Places Autocomplete

• Very accurate and widely used
• Good international coverage
• Returns structured components like street, city, state, postal code, country
• Works well for both desktop and mobile checkout flows

Good alternatives

• Mapbox Search / Geocoding
  • Good if you already use Mapbox
  • Often simpler pricing than Google for some use cases
• Here Geocoding & Search
  • Strong global address data
  • Good enterprise option
• Loqate
  • Very strong address validation and autocomplete
  • Often used for checkout/shipping forms
• Smarty / SmartyStreets
  • Great for address verification, especially in the US
• Algolia Places
  • No longer maintained, so not recommended

What matters most for checkout

For a checkout form, you usually want:

• Address autocomplete
• Address validation
• Separate structured fields if needed for shipping/tax systems
• Support for apartment/unit numbers
• Country-aware results

Recommendation

If you want the safest general recommendation:
Use Google Places Autocomplete for the input, then parse/validate the selected address before submission.

If you care more about address validation than map search, consider Loqate or Smarty.

If you want, I can also suggest the best option based on:

• your country/region
• whether you need shipping validation
• your budget
• your frontend stack