Addrex Address Validation API
API and spreadsheet tools for validating and standardizing U.S. addresses.
At a glance
- Editor score8.8 / 10
- PricingFree plan · paid from $39/mo
- Best forUS spreadsheet and API validation on a budget
- Free planYes
- Paid from$39/mo
- API accessYes
- Facts checked20 Sep 2026
Where it wins
- Free Beta includes spreadsheet uploads and full API access
- Corrects, normalizes, and returns confidence and match statuses
- Paid plans add autocomplete and detailed deliverability outputs
Where it doesn't
- Coverage is limited to U.S. addresses
- Autocomplete is available only on paid API plans
- Does not claim USPS DPV or CASS certification
Our verdict on Addrex Address Validation API
Addrex Address Validation API is designed for teams that need to validate, correct, standardize, and classify U.S. addresses. It supports individual lookups through GET or POST API endpoints, plus CSV, XLS, and XLSX uploads for batch processing. Results can include standardized address fields, confidence scores, match statuses, change details, optional map coordinates, and deliverability data. Its web and API access suit address-data cleanup, onboarding, shipping, analytics, and other workflows that need structured address results.
Pricing follows a freemium model with a Free Beta plan at $0 per month. That plan includes spreadsheet upload, full API access, map coordinates on validated results, a usage dashboard, and CSV export. Paid monthly plans begin with Starter at $39 for 5,000 address lookups and 2,500 autocomplete lookups. Growth costs $79 for 20,000 and 10,000, Pro costs $149 for 50,000 and 25,000, and Scale costs $299 for 150,000 and 75,000. Pay As You Go costs $0.50 per 1,000 lookups, with usage-based billing approval.
The strongest fit is address normalization combined with actionable validation output. Addrex can preserve original row order in CSV exports and provide ZIP+4, carrier route, county, FIPS, and deliverability fields when available. Paid plans add autocomplete suggestions and selected-address details, which supports form-entry workflows alongside batch cleanup and API validation. The product is a sensible choice for U.S.-focused teams that want spreadsheet processing and API access without a large fixed commitment. Organizations needing international coverage, or requiring USPS DPV or CASS certification, should choose an alternative.
Addrex Address Validation API pricing
All 6 Addrex Address Validation API plans and prices →
Addrex Address Validation API fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $39/mo |
| API access | Yes |
| Batch validation | Yes |
| Address correction | Yes |
| Address standardization | Yes |
| Address autocomplete | Yes |
| International coverage | Local |
| Deployment | Cloud |
| Platforms | Web |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan · paid from $39/mo (source) |
| Website | addrex.dev |
| Facts checked | 20 Sep 2026 |
Alternatives to Addrex Address Validation API
- Smarty Address VerificationA broad address data toolkit with strong API, batch, correction, and global coverage.9.0
- PostGrid Address VerificationA capable global validator for teams that need integrations and flexible workflows.8.0
- Loqate Address VerificationA broad address-data quality platform for enterprise validation, enrichment and batch workflows.5.8
See all Addrex Address Validation API alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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