Name: US Address Verification
Rating: 4.7 (16 reviews)

Overview

Product Information on US Address Verification

Updated 13th October 2025

What is US Address Verification?

US Address Verification is a software that standardizes and validates United States postal addresses by checking input data against official postal databases. The software corrects formatting errors, verifies the existence and deliverability of addresses, supplements missing information such as ZIP codes and apartment numbers, and identifies ambiguous or incomplete entries. It is used to reduce mail delivery errors and improve data quality in customer relationship management systems, e-commerce platforms, shipping solutions, and various business processes that require accurate address information. The software automates address verification, enabling organizations to maintain up-to-date and accurate contact databases and streamline logistics operations.

Overall experience with US Address Verification

Software Developer

<50M USD, IT Services

FAVORABLE

“Transition to Smarty Streamlines Address Standardization After USPS Endpoint Update”

5.0

Jan 19, 2026

After the usps changes to their API endpoint Smarty offered a great experience to be a drop in replacement for our current address standardization needs.

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CRITICAL

About Company

Company Description

Smarty is a company specializing in location data intelligence. The firm offers services such as verification, validation, enrichment, standardization, geocoding, and auto-completion of addresses around the globe across more than 240 countries and territories. Established in 2011, Smarty's focus pertains to the processing of vast amounts of location data at a rapid pace.

Company Details

Company type

Private

Year Founded

2011

Head office location

Provo, United States

Number of employees

51 - 200

Website

http://www.smarty.com

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Reviewer Insights for: US Address Verification

US Address Verification Likes & Dislikes

The ability to do bulk standardizations instead of one by one.

The cost of the service vs the value of data recevied from the service to ensure incoming addresses are usable is a very good ratio - making an essential action affordable. The ability to access (in limited fashion) their international data has also proven valueable in recovering accounts that would otherwise be unusable.

The Smarty API response quickly. Data is also reliable. Using the RDI (Residential Delivery Indicator) can help business department to decide shipping method or service to clients.

A pay as you go offering would be better for our needs.

I would prefer to be able to access the dataset from an off-line environment, which would allow me to utilize the Smarty tools in a more instances. I would additionally prefer that the free online access to corrective tools not be limited in number, bearing in mind fair use (non-automated) or that my paid account be referenced and deducted where I need this form of use (vs API) rather than blocked when reaching a limit.

When a building has both commercial and residential units, the RDU flag marks it as a commercial address. This means that online customers who live in the residential units cannot get weekend delivery service from the online store. It will be great if API can provide different indicator to detect the address that have both commercial and residential units.

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Peer Discussions

US Address Verification Reviews and Ratings

Recommended Gartner Insights

<50M USD

IT Services

Review Source

Transition to Smarty Streamlines Address Standardization After USPS Endpoint Update

IT Manager

Gov't/PS/Ed

Education

A very useful data tool, with easy start-up.

Oct 4, 2023

We've used Smarty for many years (10+) as a defualt for handling incoming address data for the United States and as a tool to uplift international addresses on a one on one basis. This has proven very productive to remove bad data input from internet forms and uplift addresses that would otherwise be unusable due to poor user input. In the time that we've been usnig this product we have never experienced downtime of any kind. We've been working with Smarty since they were Smarty Streets (not that long ago) and since they offered a free license to not for profit organizations (longer ago) and consider them a long term and stable resource.

IT MANAGER

50M-1B USD

Consumer Goods

A good API can simplify your work and life.

Oct 12, 2023

The API can be seamlessly integrated into various systems and operations. You can call this API in the specific event or use it bulk update existing data.

Director, IT

Finance (non-banking)

Fast, precise, cost effective address and location service

Oct 3, 2023

Smarty does addresses and does it very well. The API provides fast results in both ad hoc as well as real-time (typeahead) use cases. Their chat support is responsive and helpful, typically resulting in a human interaction in very short order.

Director of Product

Software

Good solution for address validation use cases

4.0

Oct 5, 2023

Smarty is an easy to integrate and fairly accurate address validation solution. We have been using it for years to help our clients maintain accurate Name, Address, and Phone information for their locations across the web.

US Address Verification

Overview

Product Information on US Address Verification

What is US Address Verification?

US Address Verification Pricing

Overall experience with US Address Verification

“Transition to Smarty Streamlines Address Standardization After USPS Endpoint Update”