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Qualtrics is the most trusted research platform, helping brands make crucial business decisions. From surveys to insights to action.
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usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

Which is more popular?
Based on our record, Qualtrics seems to be more popular. It has been mentioned 12 times since March 2021.
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | qualtrics.com | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Qualtrics yet.
API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Qualtrics and ZIP Code API. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

Beyond customer feedback, Qualtrics provides a comprehensive suite of tools for customer experience management, market research, and advanced data analytics. For organizations that leverage Qualtrics’ full range of...
Qualtrics considers the entire work experience when assessing employee engagement. It measures engagement, discovers pain points, and so on with strong survey tools and data. Qualtrics lets firms provide workers with...
Qualtrics simplifies the process of creating, analyzing, and deriving insights from data. Trusted by millions, Qualtrics is the go-to solution for businesses and institutions worldwide. Its versatile web-based...
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Recommendations tracked on public social media and blogs since March 2021.

Qualtrics | Software Engineers | Seattle, Mexico City, Krakow | Full-Time | Hybrid | http://qualtrics.com/ Qualtrics is the leader in experience management, helping businesses improve customer, employee, product, and brand experiences... - Source: Hacker News / over 1 year ago
I use Adblock Plus on Firefox, and what I had to do was add qualtrics.com to the "Allowlisted websites" area. Source: over 3 years ago
I had the same problem. It looks like it was related to my ad blocker (I use Adblock Plus). Adding qualtrics.com to its allowed list resolved the issue. Source: over 3 years ago
Tracking ZIP Code API since May 2026.
When comparing Qualtrics and ZIP Code API, you can also consider the following products.

Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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