I manage a shopify site for a client of mine. I observed that shopify checkout gets pin code from the city name we provide.
I also had seen - in another website - getting city and state from PIN. But they were using a dataset they hardcoded to a file.
IndiaPost has an API which does it for us for free. You can read about it here
The response would look like this.
{
"Message": "Number of Post office(s) found: 21",
"Status": "Success",
"PostOffice": [
{
"Name": "Baroda House",
"Description": "",
"BranchType": "Sub Post Office",
"DeliveryStatus": "Non-Delivery",
"Circle": "New Delhi",
"District": "Central Delhi",
"Division": "New Delhi Central",
"Region": "Delhi",
"State": "Delhi",
"Country": "India"
}
]
}Get City and State from PIN
Here is a REPL I created which gets City and State from PIN code. This can be useful if you want a better UX for e-commerce checkout page.