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

Which is more popular?
Based on our record, SEMRush seems to be more popular. It has been mentioned 19 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 | zip-codes.com | semrush.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | Startup from the United States |
| 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 SEMRush 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
Recommended for
Overall verdict
Why this product is good
Recommended for
SEMRush is particularly recommended for SEO specialists, digital marketing agencies, content marketers, and businesses of all sizes who are serious about improving their search engine rankings and digital marketing strategies. It is also suitable for PPC managers and social media strategists who need comprehensive tools for campaign analysis and tracking.
Walkthroughs and reviews on video.
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SEMRush Review 2020 ☑️ Best Keyword Research Tool in 2020? 😱 SEMRush Tutorial
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How often each product is chosen within a category, 0–100% relative to the other.

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

We have no reviews of ZIP Code API yet. Be the first one to post
4Presence Scout includes Google keyword rankings beside the AI answers on every plan; with Semrush, rank tracking is a separate bundle.
Say they read the public interface: Miraqo, SE Ranking, Otterly.AI, Peec AI (logged out; its add-on models run through APIs) and Profound. Semrush says its answers are "captured from real requests and not via any APIs...
Semrush provides a broad feature set. Use it for competitor analysis and site health. The Copilot feature gives recommendations based on your specific site data. It assists teams managing several projects at once and...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Semrush offers a solid checker for brand mentions in AI searches. Go Fish Digital provides a detailed manual review for one page. Betteraeo is built specifically for AEO, providing a full score and technical gap analysis. - Source: dev.to / 5 months ago
Unveiling the Advanced SEO Strategies: 1. Strategic Keyword Domination: Identify high-value, long-tail keywords relevant to your niche. Leverage keyword mapping to align content with specific stages of the customer journey. Tools... - Source: dev.to / over 2 years ago
I use SEMRush (semrush.com/) a lot when researching a niche. I would input the URL of a competitor, and then examine "competitors of organic key words" -- to find related websites that compete with the input URL website. I would spent... Source: over 3 years ago
When comparing ZIP Code API and SEMRush, you can also consider the following products.

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Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
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