Validate, standardize, and geocode U.S. addresses—fast.

API-first address normalization and reference validation with explainable match codes, confidence scoring, and precise coordinates. Real-time and batch from the same engine.

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Built for real-time APIs and high-volume batch workflows.

No DPV claims. Reference-validated against our national dataset.

Sample Request

// Input

1600 pennsylvania ave nw

washington dc 20500

Response

Match quality:Standardized

Confidence: 98%

{
  "validation_status": "VERIFIED",
  "match_code": "STANDARDIZED",
  "confidence": 0.98,
  "line1": "1600 Pennsylvania Ave NW",
  "city": "Washington",
  "state": "DC",
  "zip": "20500-0005",
  "lat": 38.8977,
  "lon": -77.0365
}

Built for teams that care about clean data

Explainable Outputs

Every result includes match codes and reason codes so you know exactly what happened.

Real-time + Batch

Same validation engine powers both instant API calls and bulk file processing.

Clear Retention Controls

Configure how long batch data is retained. Real-time requests have no storage.

Bad addresses are expensive

1
Failed deliveries and returns
Packages bounce, shipments delay, and customers get frustrated.
2
Onboarding friction
Invalid addresses create signup abandonment and downstream data problems.
3
Broken analytics
Duplicate and malformed addresses corrupt your data, skewing insights.

Addrex fixes that

Catch errors before they ship
Validate in real-time at checkout, signup, or data entry.
Clean your existing database
Upload bulk files and get standardized, deduplicated records back.
Understand every result
Explainable codes tell you what changed and why—no guesswork.

Everything you need for address quality

A complete toolkit for validating, standardizing, and enriching address data.

Normalize & Parse

Break addresses into structured components. Standardize abbreviations, fix casing, and clean formatting inconsistencies.

Reference Validation

Validate addresses against our comprehensive national dataset. Get match status, confidence scores, and detailed reason codes.

Geocoding + Quality Codes

Get precise latitude/longitude coordinates with quality indicators. Understand exactly how your address was matched.

Autocomplete API

Help users enter addresses faster with type-ahead suggestions. Reduce errors at the point of entry.

Batch Upload/Download

Upload CSV or XLSX files and download cleaned, validated, geocoded results. Process thousands of addresses at once.

Match + Reason Codes

Every response includes explainable codes that tell you exactly what changed and why. Full transparency, no black boxes.

Extract addresses from messy text

Paste a block of text and Addrex will detect one or more addresses, normalize them, validate against our reference dataset, and return standardized results with match codes.

Perfect for CRM notes, insurance claims, customer support tickets, and data migrations where addresses are buried in unstructured content.

Example Input

"Send docs to 123 N Main St, Austin TX or warehouse at 456 Elm Rd, Round Rock."

Result

2 addresses found

1. 123 N Main St, Austin, TX 78701 — Verified

2. 456 Elm Rd, Round Rock, TX 78664 — Verified

See the /v1/addresses/extract endpoint

Reference coverage & validation approach

Addrex validates addresses against a continuously maintained national reference dataset.

We do not claim USPS DPV or CASS certification. When an address cannot be verified, we return clear reason codes and support ingestion into our reference update workflow.

How it works

Three simple steps to validated, geocoded addresses.

Send

Submit an address via API or upload a file through our portal.

Score

We parse, standardize, validate against our dataset, and geocode.

Return

Get clean data with confidence scores, coordinates, and reason codes.

Batch output preview

Upload a file, get structured results with validation status and coordinates.

Input Address	Status	Match	Confidence	Lat	Lon
1600 penn ave, washinton dc	Verified	Corrected	0.94	38.8977	-77.0365
350 5th Ave, New York, NY 10118	Verified	Exact	0.99	40.7484	-73.9857
1 infinite loop cupertino	Verified	Corrected	0.96	37.3318	-122.0312
123 fake street nowhere	Not Found	None	0.00	0.0000	0.0000

Upload a CSV/XLSX Learn more about bulk processing

Built for developers

Clean REST APIs with predictable responses. Integrate in minutes, not days.

https://api.addrex.io · https://docs.addrex.dev

View Docs

cURL

curl -X POST https://api.addrex.io/v1/validate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "address": {
      "line1": "1600 Pennsylvania Ave NW",
      "city": "Washington",
      "state": "DC",
      "zip": "20500"
    }
  }'

Response

{
  "validation_status": "VERIFIED",
  "match_code": "STANDARDIZED",
  "confidence": 0.98,
  "standardized": {
    "line1": "1600 Pennsylvania Ave NW",
    "city": "Washington",
    "state": "DC",
    "zip5": "20500",
    "zip4": "0005"
  },
  "geocode": {
    "lat": 38.8977,
    "lon": -77.0365,
    "quality": "ROOFTOP"
  },
  "reason_codes": []
}

Security & Privacy

We take data security seriously. Here's how we protect your information.

TLS encryption in transit

All API communications are encrypted using TLS 1.2+.

API key authentication

Secure, revocable API keys with usage monitoring.

Redacted logging recommended

We recommend and support redacted address logging for compliance.

Configurable batch retention

Set custom retention periods for batch processing data.

Frequently asked questions

Start validating addresses today.

Get API Key Upload a File