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USPS® address verification | Free tools and best options
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USPS address verification tools validate, verify and standardize addresses to the USPS format. We'll show you how, share limitations, and give better options.
What are ZIP+4 Codes?
April 6, 2018
ZIP+4 Codes are the last 4 digits of a nine-digit ZIP Code. A nine-digit ZIP Code is made of two parts.
County FIPS Codes
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How to lookup county FIPS Codes by address, ZIP Code and city. County FIPS Codes are 5-digit numbers that identify each county in the United States.
How government services benefit from address data intelligence
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With millions of addresses in the US alone, it can be a pain to ensure that your database is accurate. See how Smarty ensures accuracy for the city of Miami.
Address Line 1 meaning, uses, placement, and examples
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Address Line 1 contains house numbers, street names, and suffixes, among other data points. We've compiled all you need to know here, check it out now!
Google Address Validation API | What Google isn't telling you
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Check out how Google's address validation API stacks up against Smarty's legendary and lightning-fast address validation API. We have all you need here!
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HIPAA data governance | Best practices for healthcare dataLearn how HIPAA data governance protects PHI through data quality, access controls, audit trails, and address verification best practices.
Optimize field service management with accurate address data | Improve routing & efficiencyTelecom teams can boost routing, scheduling, and customer service by optimizing field operations with precise, verified address data.
How parcel data helps you find property lines at scaleLearn how parcel data helps organizations identify property lines, improve GIS workflows, and support real estate and infrastructure planning.
What is data enrichment for P&C insurance?Learn how clean address data, rooftop geocoding, and verification enrich insurance workflows for better underwriting, claims, and customer records.
P&C reinsurance risk modeling: Why data accuracy determines outcomesReinsurance data enrichment is transforming underwriting. See how Smarty helps reinsurers verify and enrich submission data for smarter risk decisions.
Improving the patient registration processes in healthcareLearn how to improve the patient registration process with digital workflows, address verification, and automation to reduce errors and speed check-in.
Healthcare revenue cycle management: Process, challenges, and best practicesLearn how healthcare revenue cycle management works and how accurate patient data improves clean claims, billing accuracy, reimbursement, and revenue performance.
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Secondary address - What they are and how to use them
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Unlock the potential of secondary address data with Smarty's US Secondary Address Data. Access over 56 million addresses to improve delivery accuracy now!
Should I give the validated address to my client to review?
March 4, 2017
Why should I present the validated address back to my client for review? You don't have to, but it's best practice to do so. Read now to find out more!
Smarty and personally identifiable information
October 30, 2021
Personally Identifiable Information is any information that permits the identification of an individual, directly or indirectly This is how Smarty handles PII
The difference between "mappable" and "valid" addresses
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How to validate addresses when mapping services like Google Maps, Waze, and Apple Maps don't.
The future of P&C insurance underwriting
April 6, 2026
For P&C underwriters, the future of underwriting isn’t just moving from paper to predictive models—it’s moving from processing information to interpreting it.
The USPS address validation API
June 1, 2018
Using the USPS® API for address validation? You may want to consider other options for getting USPS address data. Here's a few reasons why.
Understanding address data quality: Smarty's bulk summary feature
August 31, 2026
Learn what address data quality is, why it matters, and how Smarty's Bulk Address Validation summary helps you measure and improve it.
Understanding Anti-Money Laundering (AML) and Know Your Customer (KYC) compliance
May 12, 2025
Learn the differences between AML and KYC compliance, why they matter, and how address data strengthens fraud prevention and regulatory reporting.
Understanding mailable, shippable, and deliverable addresses
January 23, 2025
Learn the difference between mailable, shippable, and deliverable addresses to optimize logistics and reduce costs with Smarty’s validation tools.
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