Demo

indian_pincode_validator

A lightweight and easy-to-use Dart/Flutter package to validate Indian PIN Codes.
It checks length, format, detects fake patterns, verifies real PIN codes using the official Postal API, and returns city & state information.

Perfect for Flutter forms, address validation, KYC screens, and signup flows.

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Features

✔ Validate Indian PIN code structure (6 digits, cannot start with 0)
✔ Detect invalid or obvious fake patterns (111111, 123456, 101010, etc.)
✔ Verify real PIN codes via the Indian Postal API
✔ Fetch and return city and state
✔ Simple and clean API
✔ Works in both Dart & Flutter apps
✔ Optional: Pass your own HTTP client for testing
✔ Fully typed result model (PincodeValidationResult)

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Getting started

Add the package to your pubspec.yaml:

dependencies:
  indian_pincode_validator: ^0.0.1

   dart pub get 

   import 'package:indian_pincode_validator/indian_pincode_validator.dart';

Usage

final result = await IndianPincodeValidator.validate('560103');

const like = 'sample';

Additional information

🛠 Contributing

Contributions are welcome! Feel free to open issues or submit pull requests for:

new features

bug fixes

performance improvements

🐞 Reporting issues

If you encounter any issues, please file them on the GitHub issue tracker.

❤️ Support

If this package saved you time, consider giving it a ⭐ on GitHub or sharing it with others!