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ZIP Code API VS Theysaid

Compare ZIP Code API VS Theysaid and see what are their differences

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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

Theysaid logo Theysaid

Conversational AI surveys, interviews, user tests, polls
  • 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

  • Theysaid TheySaid
    TheySaid //
    2025-09-08

TheySaid - The everything app for feedback, powered by AI and voice to gather, analyze, and act on feedback. Conduct interviews, user tests, surveys, polls, and funnel results into a single dashboard or your database via integrations.

Popular use cases include onboarding, customer + employee experience, lost sales deals, product research, and more!

ZIP Code API

Pricing URL
-
$ Details
-
Release Date
2026 April
Startup details
Country
United States
State
NY

Theysaid

$ Details
Free Trial $49.0 / Monthly ("Essential" "1 seat license" "1 Active AI project")
Release Date
-
Startup details
Country
United States
State
Utah
City
Lehi
Founder(s)
Chris Hicken, Lihong Hicken, Amy Long, Arnab K
Employees
20 - 49

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.

Theysaid features and specs

  • AI Surveys
    Conversational AI surveys that dig deeper to uncover the why behind every answer.
  • AI Interviews
    AI conducts adaptive interviews, asking smarter questions and adjusting in real time to uncover deeper insights.
  • 2-way voice
    Users speak to AI and complete their form with voice while AI reads questions aloud.
  • Usability Testing
    Ask users to do tasks, visit websites or prototypes, and get voice and video recordings.
  • AI Sidebar
    AI tells you what you've learned recently, suggests new projects, and answers questions.
  • AI Forms
    Now forms are beautiful with an optional AI assist mode to help users quickly fill out forms.
  • Conditional Logic
    Simple, intuitive branching logic still allows AI to ask follow-up questions.
  • Panel Recruiting
    Recruit feedback participants from our panel integrations, or bring your own panel.
  • Teach AI
    Give AI context about your company, pricing, and product by uploading any document.
  • Integrations
    Full-featured connectors with HubSpot, Salesforce, Slack, and more.
  • Free survey creator
    On the website, you can create or brainstorm your next project and then add it to your account.
  • Import surveys
    Import surveys from your ancient survey tools like Qualtrics, SurveyMonkey, or Typeform.
  • Templates
    The best templates for popular feedback types are available with one click.

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 Theysaid

Overall verdict

  • TheySaid (theysaid.io) is a solid AI-powered survey and feedback platform that uses conversational, interactive surveys to gather deeper customer insights than traditional static forms, making it a good choice for teams focused on customer experience and product feedback.

Why this product is good

  • Uses AI-driven conversational surveys that feel more like a dialogue, encouraging higher response rates and richer qualitative feedback
  • Automatically follows up on responses to dig deeper into customer sentiment without manual effort
  • Provides AI-generated summaries and actionable insights, saving teams time in analyzing feedback
  • Easy to set up and deploy surveys across multiple touchpoints such as websites, emails, and products
  • Helps uncover the 'why' behind customer opinions rather than just collecting surface-level ratings

Recommended for

  • Product teams seeking qualitative user feedback to guide roadmap decisions
  • Customer success and experience teams measuring satisfaction and reducing churn
  • SaaS companies wanting to gather in-app feedback conversationally
  • Marketing teams looking for deeper audience insights beyond standard surveys
  • Small to mid-sized businesses that want AI-assisted feedback analysis without heavy manual work

ZIP Code API videos

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Theysaid videos

TheySaid 3.0 Review โ€“ AI Customer Feedback Analysis & Voice-of-Customer Platform (2025)

More videos:

  • Review - Customer Survey Tool product review | Theysaid AI

Category Popularity

0-100% (relative to ZIP Code API and Theysaid)
Zip Lookup
100 100%
0% 0
Customer Feedback
0 0%
100% 100
APIs
100 100%
0% 0
Surveys
0 0%
100% 100

Questions & Answers

As answered by people managing ZIP Code API and Theysaid.

What makes your product unique?

Theysaid's answer:

Most surveys are dull and only scratch the surface. TheySaid turns surveys into conversations, asking real-time follow-ups, revealing the why behind every answer. This gives revenue leaders sharper visibility into customer needs, fueling faster, more confident business decisions that drive growth.

Why should a person choose your product over its competitors?

Theysaid's answer:

Most survey tools stop at collecting answers, giving leaders surface-level data thatโ€™s hard to act on. TheySaid turns feedback into real conversations with smart follow-ups, capturing the why behind customer behavior. This means revenue leaders donโ€™t just get data, they get clear action items: what to improve, where to double down, and how to reduce churn. And with insights delivered 10x faster, they can act quickly to capture growth opportunities and make confident business decisions.

How would you describe the primary audience of your product?

Theysaid's answer:

TheySaid is built for B2B leaders who rely on customer insights to drive growth. Our primary audience includes Customer Success teams, Revenue leaders, Product managers, and Marketing executives at SaaS and subscription-based businesses. They use TheySaid to uncover authentic customer sentiment, strengthen retention, and identify expansion opportunities.

What's the story behind your product?

Theysaid's answer:

Surveys were dead. Customers ignored them, response rates tanked, and leaders were left making decisions on scraps of data. Lihong Hicken and Chris Hicken saw the gap and built TheySaid, the first AI-powered conversational survey that actually listens. With AI interviews, live polls, and user testing alongside surveys, TheySaid captures the why behind every answer and instantly translates insights into clear action items. For revenue leaders, that means faster decisions, smarter growth moves, and insights delivered 10x quicker than any traditional tool.

Which are the primary technologies used for building your product?

Theysaid's answer:

TheySaid leverages advanced AI (natural language processing, machine learning, and generative AI), cloud infrastructure, and secure integrations with popular CRM and HR systems to deliver fast, scalable, and reliable insights.

User comments

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What are some alternatives?

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

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

Survicate - Collect feedback on your website and find out more about your visitors.

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

Dovetail - Mobile Cloud-Based Dental Software

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

Sprig - Delivering locally-sourced, seasonal, sustainable lunches and dinners.