Try U.S., Canada and International Address Verification Live
Capture updated, valid, and deliverable addresses every time.
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output Address result
Address Verification API Requests for Different Programming Languages
Integrate our API into your tech stack using your preferred programming language
- Autocomplete an Address
- Verify a Structured Address
- Verify a Freeform Address
- Batch Verify Addresses
- Suggest Addresses
- Suggest Addresses Freeform
- Parse an Address
- Lookup City/State from Postal or ZIP Code
- Lookup ZIP Codes From US City/State
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LoadingHow Does the Address Verification
API Work?
Our Address Verification solution can accept addresses as a single freeform string or individual components, such as the line 1, city, state, and so on. Once received, the API:
- Verifies: Compares the input address against authoritative postal databases, like USPS and Canada Post, to confirm its validity and deliverability.
- Corrects: Fixes incorrect/missing ZIP codes, typos, and abbreviation errors to provide premise and street-level validation.
- Standardizes: Reforms address components to match the postal prescribed address format as per the destination country.
- Enriches: Appends missing data, like ZIP+4 codes, and optionally includes additional details, like the geocodes, census data, delivery point validation code, and so on.
Verification Outcomes
The request returns a status to inform you about the action taken with the input address:
- Verified: The address is confirmed as deliverable and correct as per postal data.
- Corrected: The address was matched, but some changes were needed, like adding missing details or correcting misspellings, to make it valid.
- Failed: The address is deemed undeliverable because the API could not find a match or fix the address.
Steps to Use the Address Verification API
Integrate our API into your CRM in a few easy steps, including
Create an account on the PostGrid dashboard and verify your email to activate your profile.
Generate your API keys in the Developers section, using Test keys for development and Live keys for production.
Set your x-api-key in the HTTP header of your requests to authorize access to the API endpoints.
Choose between a RESTful API integration for custom workflows or a pre-built JavaScript snippet for web-based autocomplete.
Send a POST request to the /verifications endpoint with either a freeform string or a structured JSON body containing address components.
Use query parameters like includeDetails=true for deep metadata or geocode=true to append latitude and longitude coordinates.
Process large datasets at once via the /verifications/batch endpoint to maximize throughput.
Review the API response status, Verified, Corrected, or Failed, to ensure deliverability and data quality.
Address Verification API Features You Cannot Miss Out on
Verify addresses to store and leverage high-quality address data for marketing, shipping, and other business purposes
01
CASS & SERP Certified
Match customer addresses with official postal records from USPS and Canada Post
02
Bulk Address Verification
Verify up to 1M addresses in just two hours
03
NCOA Processing
Stay updated with real-time address change data
04
International Validation
Run verification checks for 245+ countries and territories
05
Geocoding & Reverse Geocoding
Convert mailing addresses into latitudes and longitudes and vice versa
06
Address Autocomplete
Provide accurate address auto-fill suggestions to users as they start typing
07
Parsing & Standardization
Break down all address components and restructure as per the standard format
08
ZIP/Postal Code Lookup
Check and modify ZIP/postal codes to ensure the address is complete and deliverable
09
Delivery Point Validation
Ensure the end delivery points are valid, correct, and can accept postal deliveries
10
Sub-Premise Checks
Verify addresses at the premise-level down to the unit, apartment, or suite numbers
11
Zap-Ready
Integrate our Address Verification API into Zapier and connect with 1600+ apps
12
Residential Delivery Indicator
Distinguish between residential and commercial addresses to facilitate deliveries
Benefits of Address Verification API
- Reduce Data Entry Errors
- Improve Deliverability
- Boost User Experience
- Save Time and Resources
- Start Validating Addresses in Minutes
- Access Additional Information
Reduce Data Entry Errors
Carry out operations driven by accurate, updated, and enriched customer data to make crucial marketing and business decisions.
Improve Deliverability
Ensure every mail piece reaches the intended recipient at the correct address, reducing returned mailings and reshipping expenses.
Boost User Experience
Provide a high-quality UX to customers from the start of their buying journey to checkout by embedding real-time address autocomplete and verification.
Save Time and Resources
Help your staff cut time on fixing undeliverable addresses, tracking delayed packages, and handling upset customer calls by maintaining address accuracy.
Start Validating Addresses in Minutes
Avoid months-long processes and start adding our address verification capabilities to your CRM/website with one of our libraries (Ruby, curl, JavaScript, Python, and so on).
Access Additional Information
Enhance your current customer data with geocodes, census data, county data, and more metadata to get an edge over competitors.
CASS/NCOA Certified Address Verification API
- The USPS Coding Accuracy Support System (CASS) certification ensures that an Address Verification API or solution is accurate in terms of postal address matching.
- It checks whether the tool can conduct ZIP+4 code lookup, carrier route, delivery point lookup, and so on, as per the postal records.
- NCOA stands for National Change of Address. It is a data file that the post office maintains to record all move updates of businesses and individuals.
- PostGrid is CASS and NCOA certified, which means it matches your addresses against official databases, returning records that are updated and deliverable.
Enterprise-Grade Compliance and Data Security
HIPAA
PIPEDA
GDPR
SOC 2 TYPE 2
PCI-DSS
Data Encryption
Audit Logs
Role-Based Access Control
Secure Hosting on AWS
Single Sign-On
Third-Party Penetration Testing
Continuous Monitoring
Leveraged by Ecommerce, Healthcare, Financial Services, Insurance, and Several Other Sectors
With a 5-star rating on G2, our Address Verification API can parse, standardize, validate, and verify delivery addresses in any volume for any use case.
Read the Case Study
Ecobee
This smart home technology leader integrated PostGrid to increase delivery accuracy by 40%, using the API to fix raw address data and eliminate redundant entries.
Read the Case Study
Leon’s
It utilized our CASS & SERP certified API to standardize supplier addresses and streamline cross-border operations, significantly reducing order reconciliation errors.
Read the Case Study
TalentReef
This leading talent management platform implemented our address validation to clean and deduplicate candidate data, ensuring higher data integrity across their recruitment pipeline.
Address Verification API Integrations You Can Leverage
Embed our address verification functionalities into your favorite platforms via native or custom integrations
Salesforce
Verify and standardize addresses directly within your Salesforce CRM. Prevent failed deliveries and data decay by validating contact, account, and lead records in real-time or through automated batch processing.
Shopify
Ensure accurate deliveries and faster checkouts directly within your Shopify store. Reduce failed delivery costs and boost customer satisfaction by validating shipping addresses in real-time or in bulk.
Integrates with Your Favorite Tech Stack & Tools
Easily Improve your workflow and automate print & mail through seamless integration capabilities.
Frequently Asked Questions
How Can I Get Started With PostGrid's Address Verification API?
Getting started is easy. Just sign up, get your API key from the dashboard, and follow the simple documentation to connect the API to your system.
Can I Test the Address Verification API?
Yes, PostGrid gives you 500 free lookups so you can test the API and try it out before fully using it.
How Often Does PostGrid Update Its Data for Address Verification?
PostGrid updates its address data every month to make sure the results stay accurate and up to date.
Does Your Team Offer Dev Support to Integrate the Address Verification API?
Yes, the PostGrid team provides 24/7 support. You can reach out anytime if you need help with setup or integration.
Is It Possible to Verify Mailing Addresses in Bulk?
Yes, you can verify many addresses at once by following these steps:
- Go to the Bulk Verify page in your dashboard.
- Upload your CSV file.
- Follow the step-by-step instructions.
- Download your verified file once it’s ready.
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