About Zip-Codes API

Deep Dive with Clara AI

REST API for US and Canadian postal-code data. One unified contract covers address validation and standardization (ZIP+4 append, suite parsing, confidence reasoning), radius search in both centroid and true spatial polygon modes, point-to-point distance and bearing, multi-entity autocomplete (cities, ZIPs, counties, metros, FSAs, school districts), and per-ZIP enrichments including Census ACS demographics across 14 years (542 fields), congressional and state legislative districts, and school district lookups. Differentiators from typical ZIP-code APIs: Canadian postal coverage out of the box (FSA + full 6-character postal code), true polygon-intersection radius with per-result percent-inside overlap, 14-year historical ACS depth, and a single endpoint that accepts US ZIP, ZIP+4, Canadian FSA, postal code, or lat/lon coordinates interchangeably. Built on 23 years of postal-data operating heritage. Self-service signup, no sales call required. Free tier: 2,500 requests/day, no credit card, no expiration. Paid plans: Developer $49/mo (100K credits), Professional $149/mo (350K credits), Business $499/mo (1.5M credits). One-time credit packs from $19 to $799.

Screenshots & Videos

Spatial radius search with polygon intersection

Address validation handles messy real-world input

Pricing

Free Trial Available
Starts at $0.00.
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SW Score Breakdown The SW Score breakdown shows individual score for product features.Read more

Features The Feature Score % is calculated using the weighted average method, where core features hold more weight in the final calculation. Read more

78%
Reviews

60%
Momentum

60%
Popularity

60%

Platforms Supported

Browser Based (Cloud)

Organization Types Supported

All (Small, Medium, Large)
Freelancers
Individuals

API Support

Available

Modes of Support

Business Hours, Online

Zip-Codes API Features

Show Feature Explanation

Show Missing Features

Geographic Information System Features

Features: The Feature Score % is calculated using the weighted average method, where core features hold more weight in the final calculation. Read more

78%

Spatial Analysis

Supports manipulation of geographical data or imagery for better geovisualization in a different context, applications, and operations

Map Creation

Helps in creating maps using less effort and in less time

Internet Mapping

Allows to store and display Internet topological data in a systematic way

Geocoding

Enables users to convert an address into spatial data to find the coordinates of an address or place

Census Data Integration

Helps to collect census data from multiple sources and display it in a unified form in a single database

Map Sharing

Allows exchanging the created maps with others for better collaboration

Labeling

Supports adding labels to certain items for its quick and easy identification

Interoperability

This feature enables the system to share resources with other system/software and make good use of the exchanged data

Image Management

Automates the graphical data management and monitoring tasks for easy accessibility

Image Exporting

Supports export of graphical data at different sizes and format

Color Coding

Allows highlighting different significant information by using different colors for easy identification

3D Imagery

Supports stereoscopic imaging where a technique is used to record and display images by creating an illusion of depth in them

Zip-Codes API Pricing

Free Trial

Available

No Credit Card Required, Get Started for Free

Pricing Options

Freemium ( Limited Features )

Premium Plans ( Subscription )

Free /Day

2,500 requests per day, refreshes daily at UTC midnight
No credit card required, no expiration date
60 requests per minute
1 API key
All single-call endpoints (no batch processing)
Radius search capped at 100 mi centroid / 50 mi spatial mode
Usable in real production traffic, not just evaluation

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Developer $49.00 $49.00 per month

100,000 credits per month
300 requests per minute
5 API keys with individual IP and CORS rules
All endpoints including batch (up to 100 inputs per request)
Full radius range — 500 mi centroid / 250 mi spatial
All enrichments — Census ACS, boundary lookups, demographics, timezone
Self-service plan changes, no sales call

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Professional $149.00 $149.00 per month

350,000 credits per month
300 requests per minute
10 API keys with individual IP and CORS rules
All endpoints including batch (up to 100 inputs per request)
Full radius range — 500 mi centroid / 250 mi spatial
All enrichments — Census ACS (14 years), boundaries, demographics
Best balance of monthly volume and per-credit cost

Start Free Trial

Business $499.00 $499.00 per month

1,500,000 credits per month
600 requests per minute (2x other paid tiers)
25 API keys with individual IP and CORS rules
All endpoints including batch (up to 100 inputs per request)
Full radius range and enrichment depth
Built for production volume and multi-environment deployments (prod / staging / dev keys)
Priority support response

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Credit Packs — one-time, pay-as-you-go NA