New 42-day free trial
US Address Autocomplete
Give your customers a dropdown with only valid addresses for faster checkout, increased conversion rates, enhanced user experience, and improved fulfillment quality. Yay!
Try US Address Autocomplete live
Input
Results
Improve operations
Improve operational efficiency with accurate addresses for better shipping, fewer returns, and more savings.
Get more addresses
Boost UX & conversions
Cut 80% of keystrokes typically required to enter an address with super accurate type-ahead predictions.
Showdown of autocomplete options
| Smarty | Melissa | Google Places | Loqate | Precisely | |
|---|---|---|---|---|---|
| Number of keystrokes before address suggestions appearFewer keystrokes lead to faster completion | 1 | 3 | 1 | 1 | 3 |
| Maximum number of addresses displayed5 to 10 options is ideal for mobile, relevance, and user experience | 10 | 15 | 5 | 7 | 10 |
| Only suggests valid, verified addressesAll suggested addresses are already verified as actual locations | |||||
| Uses multiple databasesCheck addresses against the USPS and other authoritative sources | |||||
| Location-based suggestionsUses detection of user’s location for relevant address options |
Get unparalleled accuracy
With address autocomplete awesomeness
Keystroke before type-ahead suggestions start
M+
Addresses with apt, suite, floor #, etc.
M+
Verified US addresses
How it works
US Address Autocomplete API offers quick and accurate address suggestions in 3 steps:
Step 1
Type
Type in your address. Only verified and accurate USA addresses appear after 1 keystroke.
Step 2
Select
Select the validated USA address from the drop-down suggestions. Most customers find their address within 5 keystrokes.
Step 3
Receive
Receive the correctly formatted USA address data output and keep your database clean by providing your customers with only verified addresses to choose from.
Make it so easy your customers can't resist
Create a more profitable user experience with autocomplete
Electrify your checkout
Your customers hit the “Place Order” button at lightning speed by finding their correct address in a dropdown after as little as 1 keystroke.
Plays well with others
Customize US Address Autocomplete API to your processes. With extensive documentation and SDKs, you can play around and see what works for you.
Locals come first
Local addresses (based on a customer’s IP address) appear first in the dropdown results, speeding up the checkout process even more.
Only-verified USA addresses
Only verified USA addresses formatted to USPS guidelines are suggested to your customers so you know your data is always accurate.
More money in your pocket
Slash shipping, returns, and customer service costs by sending mail, packages, and people to the correct USA address the first time.
Satisfaction guaranteed
When your customers use correctly formatted USA addresses, items are shipped accurately with fewer returns to get that sweet satisfaction.
Learn how to use address autocomplete to enhance your business and grow your customer base.
June 16, 2025
New cards, new challenges | How Klarna & PayPal’s card launch highlights the need for reliable card issuance
By investing in verification and autocomplete, Fintech companies can reduce friction, lower redelivery fees, avoid address fraud, and issue cards confidently.
May 22, 2025
Smarty® wins bronze Stevie® Award for customer satisfaction
The Stevie Awards announced that Smarty won the bronze medal for “Achievement in Customer Satisfaction.” Thanks, guys, and thanks to our wonderful customers!
May 12, 2025
Address autocomplete, verification, and customer satisfaction: The unseen connection
Address autocomplete, address verification, and customer satisfaction are all intricately tied together. It all comes down to speed and accuracy.
Easy-to-implement APIs
Our intuitive documentation, packed with examples and sample code, helps you get APIs up and running before you can shamelessly shout, "I love SDKs!" Discover pre-built open-source SDKs in 10 languages and try the API demo. Grandma approved.12345
lookup = AutocompleteProLookup('1042 W Center')
lookup.add_city_filter('Denver,Aurora,CO')
client.send(lookup)
suggestions = lookup.result
lookup.add_city_filter('Denver,Aurora,CO')
client.send(lookup)
suggestions = lookup.result
Use cases
See how organizations around the world are benefiting from US Address Autocomplete
Improved checkout experience, including mobile users
Address autocomplete increased customer conversion rates from 1.6% to 9.2%, depending on the country.
Reversal of decline in eCommerce conversion rates
Conversion rates increased while also reducing costs associated with misdelivered and returned packages.
Accurate address capture gets people & things to the right place
Integration of autocomplete into company product ensures accurate last-mile delivery.
All included, at no extra cost
Superior address accuracy
Superior address accuracy
Smarty uses multiple authoritative data sources, such as national postal services, to provide higher accuracy across millions of addresses.
Documentation you understand
Documentation you understand
If you speak and read software engineering, get excited about Smarty's documentation. Developers build it for developers who understand all things developing. Smarty resources make your implementation smooth and easy, like spreading freshly churned butter on a warm piece of bread. Mmmmm. Butter.
Unlimited, unmatched, free support
Unlimited, unmatched, free support
Our support teams like their jobs, so when you call during open hours, they’re eager to chat with you. A real, live person answers (every single time!) and attentively listens to understand you. Then, they work quickly to provide a solution: no stress, no drama, just good service at no extra cost.
What our customers are saying
We evaluated quite a few providers, and felt that Smarty was the right partner for us, given their user-friendly approach and robust support. It checked all of our boxes.
US Address Autocomplete pricing
Try before you buy with a US Address Autocomplete free trial. Sign up for an account and test USA address examples (all states and territories are included!) If you’re ready to go, please choose from the plans below. (Yes. we meant to rhyme.)Free trial
$0
42 days
1,000 lookupsProfessional
$20
per monthTerm
Lookups per month
Custom
Custom plan for your company's needs
Choose your features Unlimited lookups / year Unlimited lookups / second Custom legal terms Enhanced data privacy
Unlimited lookups / year Unlimited lookups / second Custom legal terms Enhanced data privacyFAQ
Can Smarty’s US Address Autocomplete API handle non-standard USA addresses?
Can Smarty’s US Address Autocomplete API handle non-standard USA addresses?
Yes. When customers start typing, only verified and standardized addresses appear for them to select. If they mistype a letter, autocomplete only suggests verified and standardized addresses.
Is Smarty’s US Address Autocomplete API customizable?
Is Smarty’s US Address Autocomplete API customizable?
Yes, with Smarty’s US Address Autocomplete API, several input fields can be included in the API call, allowing you to customize results based on your needs and brand.
*Here’s a money-saving tip. It takes a customer 5 keystrokes (on average) to find their address. To maximize the use of address autocomplete, use your customer’s location and configure not to call the US address autocomplete API until they’ve entered 5 keystrokes.
How easy is integrating Smarty’s US Address Autocomplete API into my existing systems?
How easy is integrating Smarty’s US Address Autocomplete API into my existing systems?
Coders love Smarty’s US Address Autocomplete API because it’s so easy to integrate into software stacks. You don’t have to just take our word for it. Here’s what Glenn G. had to say in a G2 review: "When I was looking for an address solution, it was the simplest one I found and the quickest implementation. Their customer support is second to none and always helps me when I get stuck.”
What are the privacy and security measures in place for Smarty’s USA address data?
What are the privacy and security measures in place for Smarty’s USA address data?
We prioritize the security of your data. Any information you submit for processing will never be sold, shared, or distributed in any way. You can find more details in our Terms of Service and Privacy Policy.
How much does Smarty’s US Address Autocomplete API cost?
How much does Smarty’s US Address Autocomplete API cost?
You can get a US Address Autocomplete free trial for 42 days and test it. When you’re ready to buy, you’ll be invoiced for Smarty’s US Address Autocomplete API based on prepaid lookups, billed monthly or annually. A single keystroke is considered a lookup. Smarty returns USA address suggestions based on the first keystroke and the customer’s IP address.
*Here’s a money-saving tip. It takes the average person 5 keystrokes to find their address. To maximize your plan, use your customer’s location and configure not to call the US Address Autocomplete API until they’ve entered 5 keystrokes. You can also do this same configuration during your US Address Autocomplete free trial for 42 days.
What happens if Smarty’s autocomplete USA address suggestion is incorrect?
What happens if Smarty’s autocomplete USA address suggestion is incorrect?
If, by chance, you believe a USA address suggestion is incorrect, please send it to our support team, who will investigate the issue further.
How do I handle addresses that don't appear in Smarty’s US Address Autocomplete API?
How do I handle addresses that don't appear in Smarty’s US Address Autocomplete API?
If an address is new, there’s a chance it hasn’t yet made it to our system from the USPS and other sources. If this happens, contact our support team, who will investigate the issue further.
Why should I choose Smarty’s US Address Autocomplete API?
Why should I choose Smarty’s US Address Autocomplete API?
With just one keystroke, Smarty suggests verified address options, including non-postal addresses like those serviced by FedEx, DHL, etc, to your customers. Even better, the suggestions are accurate, providing the entire USA address, including apartment, floor, loft, lobby, suite, PO box numbers, and more. Basically, we do it better than the other guys.
Also! You can try it before you buy it. Get a US Address Autocomplete free trial for 42 days and test USA address examples.
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