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

Upwork
Freelancer.com
Guru
PeoplePerHour
99designs
Elance
Hired
Hire the Top 3% of Freelance Talent®. Toptal is an exclusive network of the top freelance software developers, designers, finance experts, product managers, and project managers in the world.

Which is more popular?
Based on our record, Toptal 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 | toptal.com |
| Company | Startup from the United States · 2026 | 2010 |
| 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 Toptal yet.
What each product offers, as listed by its team.

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
Toptal is best suited for companies in need of software developers, designers, project managers, and finance experts who have been vetted to meet high standards. It's particularly beneficial for startups, SMEs, and larger enterprises looking for flexibility and top-tier talent without committing to long-term employment.
Walkthroughs and reviews on video.
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Upwork, Freelancer, Fiverr or TopTal? How to Pick a Freelancing Platform
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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 Toptal. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

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Why It’s Great: Toptal’s pre-vetted freelancers guarantee a faster and more reliable hiring process. You won’t waste time filtering out unqualified applicants, making it the ideal platform for businesses needing...
Renowned for its rigorous selection process, Toptal claims to accept less than 3% of applicants. This exclusivity is backed by a comprehensive screening that spans skill assessments, live coding challenges, and...
Next up on our list of Upwork Alternatives is Toptal. This site is a large freelance platform that connects businesses with the top 3% of talent in various industries, including design, development, project...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Toptal: For experienced developers, higher-paying jobs. - Source: dev.to / over 2 years ago
We noticed that the flexibility and diversity of work available to software developers is impressive. Platforms like https://a.team, https://moonlightwork.com, toptal.com and https://fraction.work are offering freelancing, part-time, and... Source: over 3 years ago
Even at the application level, most people get away with it because those DSA are implemented in the underlying libraries or framework which you just call from your code. But if you were ever asked to debug that library/framework some... Source: over 3 years ago
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Guru makes it easy for employers and freelancers to connect, collaborate and get work done flexibly and securely. Browse 1. 5 million freelancers for hire and thousands of projects.
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