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Interview Cake VS ZIP Code API

Compare Interview Cake VS ZIP Code API and see what are their differences

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Contents:
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  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

Interview Cake logo Interview Cake

Free practice programming interview questions. Interview Cake helps you prep for interviews to land offers at companies like Google and Facebook.

ZIP Code API logo ZIP Code API

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
  • Interview Cake Landing page
    Landing page //
    2023-01-25
  • ZIP Code API Landing page
    Landing page //
    2026-05-21

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America โ€” no separate APIs by country or data type.

What it does

  • Address validation and standardization โ€” production-grade parser with ZIP+4 append, refreshed monthly
  • Radius search โ€” centroid haversine and true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint โ€” accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead โ€” cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance โ€” between any two postal points
  • Census ACS demographics โ€” 2011โ€“2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups โ€” Census tracts, congressional districts, state legislative areas, school districts โ€” with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data โ€” not commodity or scraped sources
  • Canadian postal coverage โ€” most peers in this space are US-only
  • True spatial radius โ€” not just centroid haversine
  • 14 years of historical ACS depth via API โ€” unusual outside of raw Census downloads
  • One endpoint for all of North America โ€” no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free โ€” 2,500 lookups/day, no credit card required, no expiry
  • Developer โ€” $49/mo, 100K credits, 300/min
  • Professional โ€” $149/mo, 350K credits, 300/min
  • Business โ€” $499/mo, 1.5M credits, 600/min
  • Credit packs โ€” one-time, from 25K ($19) up to 2M ($799)

Resources

Interview Cake features and specs

  • Comprehensive Coverage
    Interview Cake covers a wide range of topics and problems, making it a valuable resource for preparing for coding interviews across various domains.
  • Focus on Understanding
    Emphasizes understanding over memorization by breaking down problems into understandable concepts and providing thorough explanations.
  • Step-by-Step Solutions
    Offers step-by-step guides and solutions to problems, which can help users learn the reasoning behind different approaches.
  • Practice Problems
    Provides numerous practice problems that simulate real interview questions, helping users to test their interview skills.
  • Adaptive Strategy
    Helps users identify weaknesses and provides targeted practice based on their performance, aiding efficient study planning.

Possible disadvantages of Interview Cake

  • Price
    Interview Cake is a paid service, which might be a barrier for individuals on a tight budget seeking affordable or free resources.
  • Limited Interaction
    Lacks interactive coding environments or challenges, which might be less engaging compared to platforms that offer interactive learning.
  • Not a Comprehensive Learning Tool
    While great for interview preparation, it may not cover foundational programming concepts in-depth for complete beginners.
  • Update Frequency
    The content updates might not be as frequent as other platforms, potentially leading to outdated problem-solving techniques or questions.

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

Interview Cake videos

+ Add

My Definitive Interview Cake Review

More videos:

  • Review - Interview Cake Review

ZIP Code API videos

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Category Popularity

0-100% (relative to Interview Cake and ZIP Code API)

Interview Cake

ZIP Code API

Education & Reference
100 100%
Education & Reference
0% 0
Zip Lookup
0 0%
Zip Lookup
100% 100
Development
100 100%
Development
0% 0
APIs
0 0%
APIs
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Interview Cake and ZIP Code API

Interview Cake Reviews

The Best Code Interview Prep Platforms in 2020
Frequently considered the best source for interview articles, tips, and content, Interview Cake is a crash course in getting a software development job.
Source: www.freecodecamp.org

ZIP Code API Reviews

We have no reviews of ZIP Code API yet.
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Social recommendations and mentions

Based on our record, Interview Cake seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Interview Cake mentions (3)

  • Just started Leetcode and I'm so lost...
    Here's another site that helped me when I was starting out: interviewcake.com (I think I had a free trial or something). Source: over 4 years ago
  • Getting a full time job before graduation
    Interviewcake.com has some great explanations and practice problems for leetcode style problems. I got the year subscription on sale. Source: almost 5 years ago
  • How to remove mental fatigue during interview
    I also used to do the exact same thing during a technical interview. Seems like an obvious answer, but I've always noticed the more prior practice I have, the less nervous I get. I think a good part of the mental fatigue comes from nerves. And those nerves were amplified when I encountered a problem for which I didn't immediately have a general grasp of the solution. But as soon as I got more consistent with my... Source: about 5 years ago

ZIP Code API mentions (0)

We have not tracked any mentions of ZIP Code API yet. Tracking of ZIP Code API recommendations started around May 2026.

What are some alternatives?

When comparing Interview Cake and ZIP Code API, you can also consider the following products

AlgoExpert.io - A better way to prep for tech interviews

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

interviewing.io - Free, anonymous technical interview practice

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

CodingInterview - CodingInterview offers essential information to help you conquer programming interviews.

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

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