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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, Dovetail seems to be more popular. It has been mentioned 14 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 | dovetail.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 Dovetail 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
Dovetail is recommended for research teams, UX/UI professionals, product managers, and any organization needing powerful tools for qualitative data analysis and research collaboration. It is ideal for teams who want to centralize their research insights and improve decision-making through data-driven approaches.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Barrell Dovetail Whiskey Review! Breaking the seal episode #58
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Dovetail and ZIP Code API. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Most of my friends at Canva and Atlassian swear by Dovetail (dovetail.com) which was pretty much built for this workflow. Source: almost 3 years ago
2 - DoveTail: Qual study tool; really love this one and it has a lot of features. Auto-transcription, sentiment analysis, and customizable data organization to streamline research analysis. Source: almost 3 years ago
Dovetail. We have played with this for our studies and really like it, it creates video clips out of your time stamps. https://dovetail.com/. Source: over 3 years ago
Tracking ZIP Code API since May 2026.
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