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Address Lookup API

Fast and accurate address lookup

Postcoder delivers the fastest and most accurate way for users to fill in their address on your website and app.

Address lookup
    • Summary 123 Foxglove Lane, Biddenden,
      Ashford, Kent, TN27 8BT
    • Address line 1 123 Foxglove Lane
    • Address line 2 Biddenden
    • Post town Ashford
    • County Kent
    • Postcode TN27 8BT
    • Country United Kingdom
    • Latitude 51.1024521653
    • Longitude 0.6645798746
Used by over 9,000 leading organisations worldwide
  • NHS customer logo
  • SKY customer logo
  • Kentucky Fried Chicken customer logo
  • Royal National Lifeboat Institution customer logo
  • Kwik Fit customer logo
  • USwitch customer logo
  • Legal and General customer logo
Start typing your address...

Address autocomplete API

Instant, intelligent address suggestions as users type any part of their address - reducing keystrokes, speeding up checkouts and cutting down on errors. Streamline the user journey and boost conversions.

  • Smarter suggestions
  • Global coverage
  • Simple integration
GET /pcw/autocomplete/find?query=123%20foxg&country=uk...
[
	{
		"id": "20202020",
		"type": "ADD",
		"summaryline": "123 Foxglove Lane",
		"locationsummary": "Biddenden, Ashford, Kent, TN27 8BT",
		"count": 1
	},
	{
		"id": "10101010",
		"type": "ADD",
		"summaryline": "123 Foxglove Park",
		"locationsummary": "Weybourne, Holt, Norfolk, NR25 7HG",
		"count": 1
	},
	{
		"id": "30303030",
		"type": "ADD",
		"summaryline": "123 Foxglove Road",
		"locationsummary": "Winchburgh, Broxburn, West Lothian, EH52 6FE",
		"count": 1
	}
]

GET /pcw/autocomplete/retrieve?id=20202020&country=uk&lines=2...
[
	{
		"summaryline": "123 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT",
		"addressline1": "123 Foxglove Lane",
		"addressline2": "Biddenden",
		"number": "123",
		"premise": "123",
		"street": "Foxglove Lane",
		"dependentlocality": "Biddenden",
		"posttown": "Ashford",
		"county": "Kent",
		"postcode": "TN27 8BT",
		"latitude": "51.1024521653",
		"longitude": "0.6645798746"
	}
]
Country
United Kingdom
Start typing your address or postcode
123 foxg
123 Foxglove Lane Biddenden, Ashford, Kent, TN27 8BT
123 Foxglove Park Weybourne, Holt, Norfolk, NR25 7HG
123 Foxglove Road Winchburgh, Broxburn, West Lothian, EH52 6FE
Your address
Address line 1 123 Foxglove Lane
Address line 2 Biddenden
Town / City Ashford
County / State Kent
Postcode / Zip Code TN27 8BT
Map Map Pin
Enter your postcode or address

Address and postcode lookup API

Instant, accurate address results from any postcode or address fragment with a single search - reducing friction, minimising errors and speeding up form completion. Simplify the user journey and improve conversions.

  • Single lookup
  • Global coverage
  • Simple integration
GET /pcw/PCW45-12345-12345-1234X/address/uk/tn27%208bt?lines=2...
[
	{
		"summaryline": "123 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT",
		"addressline1": "123 Foxglove Lane",
		"addressline2": "Biddenden",
		"number": "123",
		"premise": "123",
		"street": "Foxglove Lane",
		"dependentlocality": "Biddenden",
		"posttown": "Ashford",
		"county": "Kent",
		"postcode": "TN27 8BT",
		"latitude": "51.1024521653",
		"longitude": "0.6645798746"
	},
	{
		"summaryline": "124 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT",
		"addressline1": "124 Foxglove Lane",
		"addressline2": "Biddenden",
		"number": "124",
		"premise": "124",
		"street": "Foxglove Lane",
		...
	},
	...
]
Country
United Kingdom
Enter your postcode or address
tn27 8bt
Find
123 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT
124 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT
125 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT
126 Foxglove Lane, Biddenden, Ashford, Kent, TN27 8BT
127 Foxglove Lane, Biddenden,
Your address
Address line 1 123 Foxglove Lane
Address line 2 Biddenden
Town / City Ashford
County / State Kent
Postcode / Zip Code TN27 8BT
Map Map Pin

Onboard more customers with less friction

Streamline your onboarding process with fast, accurate address entry that boosts conversions and reduces errors.

  • Faster checkouts

    Reduce typing and speeds up the user journey.

  • Better user experience

    Minimise friction during onboarding and checkout.

  • Cleaner data

    Eliminate errors and failed deliveries.

Single ground truth

All the world's address data in one product

Postcoder provides a unified view and single ground truth that you can rely on.

  • 249 countries
  • Standardised addresses with coordinates
  • Updated daily
Always on

Everything your business needs

Postcoder and its team of address and technology specialists meet the needs of high-demand applications and rapidly growing businesses.

  • ISO 9001 certified

    Built on quality management best practices you can trust.

  • Auto-scaling infrastructure

    Seamlessly handles enterprise volumes and traffic spikes.

  • PCI-DSS & GDPR compliant

    Designed for secure, privacy-first data handling.

  • 99.99%+ uptime

    Proven reliability to keep your integrations running smoothly.

  • 24/7 internal response team

    Our engineers are on standby 24/7 to respond to service disruptions.

  • Low-latency response times

    Fast, reliable API performance at all times, even under load.

  • Full API access & integrations

    Connect easily with your existing tech stack.

  • Truly global coverage

    Fast and accurate address autocomplete across all 249 countries.

  • Dedicated onboarding specialist

    Personalised setup and best-practice guidance.

  • Migration assistance included

    Smooth transition from legacy systems or providers.

  • Free multi-channel support

    Get help via chat, email or phone - at no extra cost.

Highly rated by customers

Award-winning with top performance, easy admin and great support

Businesses rate Postcoder 4.7 stars out of 5 on the world's most trusted software marketplace.

  • "Having a more simplified checkout page with the help of Postcoder has had two major benefits to our business. Faster checkouts by customers who haven't had to type in their full address, a much simpler customer journey and a major reduction in data errors; where we saw a big drop in incorrect details entered."
    Alex Woods Digital Marketing Executive / Victorian Plumbing
  • "We picked Postcoder because the API is simple to use and it supports many countries which we want to scale out to."
    David Annez Head of Engineering / loveholidays
  • "The reason we like Postcoder is that the rooftop lat/long coordinates have proven to be far more accurate than any other service and Postcoder has hugely increased our successful delivery rates."
    Laura Bailey E-commerce Product Manager / Pasta Evangelists
  • "Postcoder offers a seamless integration with our services. It is very popular with our customers."
    James Gutterson Commercial Manager / Signicat
  • "Postcoder has been great; there has been a noticeable quality increase in our campaigns. In some the pickup rate went from 30% to 60-70% and our appointment ratings for a campaign went from a 15% average to 40% for one client!"
    Daniel Jones IT Technician / Lead Pronto
  • "Postcoder is a single API that provides all the features we need... Rather than integrate several APIs, we only had to integrate one."
    Carl Horn Head of Digital Servicing & Customer Transformation / Capquest
  • "Postcoder ensures that all the address data, the mobile number and the email addresses that our customers give us are correct. It really speeds up the process for our customers."
    Julie Taylor Operations Director / Barrhead Travel