Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
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

Pocket Casts
Feedly
Inoreader
Feedity
Feeds 2
Podcaster
PodcastSaver
Content aggregator for YouTube, Podcasts, and RSS. Use the unique 'ReWind' feature to drip-feed old archives from the start and catch up on favorite creators. Also functions as a standard Podcast player and RSS reader

Which is more popular?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | zip-codes.com | rewindbypaul.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

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...
No description of ReWind by Paul yet.
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
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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 ZIP Code API and ReWind by Paul. For example, how are they different and which one is better?
When comparing ZIP Code API and ReWind by Paul, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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All the podcasts you know and love. With over 300, 000 unique shows, we've got you covered. Featured, Trending & Most Popular. See what's popular and find new favorites with Pocket Casts Discover. Read more about Pocket Casts.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The content you need to accelerate your research, marketing, and sales.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Dive into your favorite content. The content reader for power users who want to save time.
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