Software Alternatives, Accelerators & Startups
Register | Login
ZIP

ZIP Code API VS interviewing.io

Compare ZIP Code API VS interviewing.io and see what are their differences

Appark.ai
Free app market analytics tool for growth and competition insights. featured
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.
Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

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

interviewing.io logo interviewing.io

Free, anonymous technical interview practice
  • 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

  • interviewing.io Landing page
    Landing page //
    2022-11-02

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.

interviewing.io features and specs

  • Anonymity
    Interviewing.io allows candidates to remain anonymous during the interview process, which can help reduce bias and make candidates more comfortable.
  • High-quality practice
    The platform provides opportunities to practice with real engineers from top tech companies, offering high-quality feedback and experience.
  • Cost-effective
    Many features on Interviewing.io are free, including the ability to conduct practice interviews and access to recordings and feedback.
  • Feedback and metrics
    Candidates receive detailed feedback and performance metrics after each interview, helping them identify areas of improvement.
  • Networking
    The platform can provide valuable networking opportunities by connecting candidates with engineers and potential employers from top tech companies.

Possible disadvantages of interviewing.io

  • Limited industry focus
    Interviewing.io primarily focuses on tech interviews, so it may not be useful for candidates looking for practice in other industries.
  • Variable interviewer quality
    The quality of interviewers can vary, which might affect the consistency of the practice and feedback received.
  • Scheduling challenges
    Finding convenient times for interviews can sometimes be challenging, especially if both the candidate and interviewer have busy schedules.
  • Stress and performance pressure
    Despite being a practice platform, candidates might still experience stress and performance pressure, similar to real interview scenarios.
  • Limited personalization
    The feedback and practice sessions are somewhat standardized, which may not always cater to the specific needs or unique backgrounds of individual candidates.

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

Analysis of interviewing.io

Overall verdict

  • Interviewing.io is considered a good resource for individuals looking to improve their technical interviewing skills. It is particularly beneficial due to its anonymous nature, which encourages honest feedback and reduces anxiety, and the quality of interviewers involved, who often come from well-known tech companies.

Why this product is good

  • Interviewing.io is a platform designed to help candidates practice technical interviewing through mock interviews, which can be especially useful for those aiming to enter fields such as software engineering. It offers anonymous practice sessions with engineers from top tech companies, providing real-world experience and feedback. The platform also offers flexible scheduling, expert insights, and resources to improve interview performance.

Recommended for

  • Aspiring software engineers
  • Recent computer science graduates
  • Professionals transitioning into tech roles
  • Individuals preparing for technical interviews at major tech companies

ZIP Code API videos

No ZIP Code API videos yet. You could help us improve this page by suggesting one.

Add video

interviewing.io videos

+ Add

Technical Interviewing Anonymous: Aline Lerner, CEO @ Interviewing.io

Category Popularity

0-100% (relative to ZIP Code API and interviewing.io)

ZIP Code API

interviewing.io

Zip Lookup
100 100%
Zip Lookup
0% 0
Online Learning
0 0%
Online Learning
100% 100
APIs
100 100%
APIs
0% 0
Online Education
0 0%
Online Education
100% 100

User comments

Share your experience with using ZIP Code API and interviewing.io. For example, how are they different and which one is better?
Log in or Post with

Reviews

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

ZIP Code API Reviews

We have no reviews of ZIP Code API yet.
Be the first one to post

interviewing.io Reviews

The Best Code Interview Prep Platforms in 2020
Interviewing.io takes a very unique approach to coding interview prep. Rather than providing content and practice coding challenges, Interviewing.io has a library of actual video interviews that you can watch, and you can pay to anonymously take a mock interview with an engineering hiring manager.
Source: www.freecodecamp.org

Social recommendations and mentions

Based on our record, interviewing.io seems to be more popular. It has been mentiond 102 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.

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.

interviewing.io mentions (102)

  • AI Interview Prep in 2026 Is Broken. Here's What Nobody Wants to Admit.
    Interviewing.io charges $100โ€“225 per session. Genuinely useful, but you can't do 5 sessions a day for a month. And a stranger on a 45-minute call doesn't know your history. - Source: dev.to / 5 months ago
  • System Design Roadmap for Freshers 2026: From Zero to Placement-Ready
    Mock interviews: Pramp, Interviewing.io (free tier), or batchmates. Aim for 8โ€“10 mocks. - Source: dev.to / 6 months ago
  • Interviewing in tech changed drastically after 2022 โ€” hereโ€™s what I learned trying to navigate it
    Interviewing is very performative so along the way you should absolutely do mock interviews just to get the nerves out and to practice being calm under pressure. I paid for several using Interviewing.io. They were certainly helpful, but I actually found the free ones I did with peers, both on interviewing.io and tryexponent.com to be more helpful. Why was it more helpful? Itโ€™s worthwhile being on the interview... - Source: dev.to / 12 months ago
  • How to Become a Backend Developer in 2025 ?
    Interviewing.io โ€“ Anonymous mock interview platform with real engineers from top tech companies. - Source: dev.to / over 1 year ago
  • My Journey of Mastering Data Structures and Algorithms in 6 Months: Dos and Don'ts๐Ÿ‘ฉ๐Ÿปโ€๐Ÿ’ป
    Conduct Mock Interviews: Simulate interview scenarios using platforms like Pramp or Interviewing.io. This helps you manage time, pressure, and articulating your thought process. - Source: dev.to / almost 2 years ago
View more

What are some alternatives?

When comparing ZIP Code API and interviewing.io, you can also consider the following products

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

LeetCode - Practice and level up your development skills and prepare for technical interviews.

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

Final Round AI - Interview Copilot - Real Time AI interview Assistant

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

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

Loading...