Address Lookup tool - what can it do with data? - Fetchify

Address standardisation is the process of removing mistakes and aligning address data with the official format accepted by the postal service of the country in question. 


Postal addresses are a fundamental cornerstone of modern society; connecting individuals with one another, allowing ecommerce and home delivery to flourish, giving residents access to a range of essential services from financial to utilities. Customer address data is also a fundamental cornerstone for modern business, whether capturing data for the first time at checkout or registration, searching or cleansing your existing database. It is vitally important to get the delivery details right, particularly for companies such as ecommerce merchants which ship overseas. If you only have the house number where the recipient country is expecting a postcode, or any number of other simple but easily made mistakes, it could lose you time and money in trying to reformatting for your logistics or courier company, rearranging delivery, potentially returning, and refunding, or even completely losing your goods and the future business of that customer. 


However, although it is a vitally important detail, accurate address data, formatted to the correct standards, is still only a tiny part of your business and the service you provide to your customers, be it in ecommerce, finance, insurance, utilities, hospitality, or a membership organisation. Which brings us to the real answer. 


Quite simply, if you integrate our address auto-complete or postcode lookup address finding tool, you really don’t need to worry about address standardization at all. Our API will analyse the address entered by your customer, detect and remove common errors, match the information to the verified address in our database, apply missing formatting such as capital letters, and populate the address form in the correct order depending on the standards of the selected country. All in a matter of milliseconds. 


For a bit of history, in case you were wondering why we even have set standards for addressing, if I live on the corner of Beech Street and Poplar Avenue, down the road from the train station in my town, why not just say that? Well, the thing is that is exactly what used to happen. Up until the 19th century, people would just describe the place and person they wanted to send the letter to, and the poor postal worker would just have to get as close as they could and then start asking around. At a certain point it just got too exhausting. In the UK, the introduction of house numbers and the division of London into the first districts in the 1850s, began the slow and methodical process of standardizing postal addresses. The Postal Museum in London holds a collection of posters encouraging people to use their correct house numbers and postcodes as many were slow in adopting them, even up to the 1970s when those shown below were produced. 

 

A similar advertising campaign took place in the USA accompanying the implementation of the Zone Improvement Plan (ZIP Codes) in 1963. Having seen the struggle of the American Telephone and Telegraph Company to get the public to adopt area codes at the beginning of phone numbers, the post office pre-empted public resistance and decided to tackle it from the very beginning the with Mr. Zip.


Learning about this can make you realize just how hard the job of being a postman was. Before address standardization the postal round would have been a very different experience. But it’s not all plain sailing these days. You may have seen the story in the news recently about this letter which was successfully delivered against all the odds of eccentric address writing. 


The fact that this letter made it through is a testament to the dedication of the Royal Mail and how lucky we are in the UK. But without the assistance of the referenced BBC2 programme, most likely letters addressed like this will end up at the National Returns Centre in Belfast. Or similar “dead letter” offices in other countries. 


Every country in the world has it’s own story of the development of an addressing system, some more recent than others, and many still being refined. The “Addressing the world—An address for everyone” initiative by the Universal Postal Union seeks to help countries around the world develop cohesive address infrastructures and to guide them through common complications with addressing. But that is probably a subject to dive into another day.


As volumes of mail, mail-order shopping and then ecommerce have increased, so has the need to streamline the sorting and delivery process. Standardised addresses which can be quickly and efficiently recognised and sorted are a vital part of this process. Thankfully over the last 200 years the public has mostly learnt how to use addresses pretty consistently, but people still make mistakes frequently, it happens. Our address search and data validation tools are here to mop up the errors, typos, autocorrects and everything in between, ensuring you collect only accurate and standardised address data, every time. 

About Fetchify


Fetchify’s address lookup and data validation platforms cover more than 250 countries, and increases customer conversion with the fastest, most accurate customer data capture. Fetchify’s flagship products – Address Auto Complete and Postcode Lookup – reduce friction at the checkout, and also significantly increase the number of successful deliveries. Founded in 2008, Fetchify processes millions of data transactions every day for clients ranging from startups to established high-street names, and offers a full suite of data validation tools, including phone, email and bank, too.

Two colleagues tracking data on an iPad
By Fiona Paton December 3, 2025
New Year. New Approach. The countdown to 2026 is on, and if you want to hit the ground running, it’s time to think about the one thing that can make or break your year: your data. We’ve all heard the saying “start as you mean to go on.” Well, if that start involves messy, inaccurate data, you’re already tripping before you’ve left the starting gates. Clean, accurate customer data is the foundation for everything: smarter campaigns, smoother deliveries, and sales that actually reflect the effort you put in. Without it, you’re fighting uphill from day one. The truth? Bad data isn’t harmless. Every failed delivery, bounced email, or wrong phone number chips away at your bottom line. In the UK alone, dirty data drains an eye‑watering £900 billion a year from businesses. And with 1 in 5 records typically incorrect, each one costs around £81 annually in wasted spend, lost opportunities, or compliance risks. Why it matters? Still need convincing? Here are the stats that show why clean data is non‑negotiable: Confidence in every customer record : Royal Mail PAF makes 3,000–5,000 updates a day - over 1 million a year. Compliance and reduced risk : UK GDPR requires customer data to be accurate and up to date. Get it wrong, and you risk fines of up to £17.5M or 4% of global turnover. Lower delivery failure and service costs : UK businesses lose £1.6 billion a year to undelivered parcels. At £125 per parcel, even small errors add up fast. Protect marketing ROI : 50% of customers walk after a single failed delivery, and 80% won’t come back at all. The Challenge That’s why starting 2026 with a data cleanse isn’t just smart - it’s essential. Clean data means clear visibility, fewer delivery failures, better targeting, and reduced compliance risk - without the operational headache. By tackling bad data upfront, you give yourself the perfect launchpad for growth, instead of joining the many organisations that end up spending 10–30% of their revenue fixing problems after the fact. So here’s the challenge: make 2026 the year you stop letting bad data hold you back. Cleanse it, validate it, and set yourself up for campaigns that connect, deliveries that delight, and results that truly count. The message is clear: dirty data costs growth, trust, and opportunity. By cleansing upfront, you protect your ROI, strengthen compliance, and give yourself the platform to launch a year of real momentum.
By Fiona Paton November 24, 2025
The Background A leading financial services provider needed to strengthen the accuracy of customer information during digital onboarding. They handle thousands of new applications every month and rely on fast, frictionless sign-up journeys that still meet strict compliance, risk and verification requirements. Their existing process struggled with poor quality address and bank details, leading to increased manual checks, slower approvals and higher abandonment. Incorrect or incomplete address data was also creating downstream issues for customer communications, account documentation and regulatory reporting. The organisation wanted a solution that could improve data quality at the point of entry, reduce friction in the onboarding journey and support their compliance teams with more accurate source information. The Solution The client selected Fetchify to enhance customer onboarding with accurate, validated address and bank data as soon as a user enters it. Fetchify provided: Global address validation UK enhanced datasets where deeper detail is available Bank account validation to check the sort code and account number accuracy Simple integration into their digital onboarding flow Consistent formatting to support KYC, AML, and compliance checks By validating information early, Fetchify helped streamline the entire customer journey. The Result After implementing Fetchify, the organisation achieved: Reduction in applications failing due to incorrect address or bank details Faster onboarding with fewer manual reviews Greater confidence in customer identity information Better outcomes for compliance and risk teams Improved data quality flowing into internal systems A smoother experience for new customers Why Fetchify? The organisation chose Fetchify because it offered: Reliable global address validation Additional UK data where extra detail helps accuracy Fast and predictable performance A simple, low-effort integration A single platform for address and bank checks Helpful and responsive support A cost structure that fits digital volume growth The Outcome Fetchify now supports the business with ongoing customer onboarding, ensuring address and bank details are accurate before progressing to further checks. This has reduced operational workload, improved customer experience, and strengthened compliance processes across the customer lifecycle.
Man checking out newly arrived shoe stock to add to his online store
By Fiona Paton November 17, 2025
How an online shoe store is using data validation tools to provide a speedy, frictionless checkout, reducing failed deliveries and increasing ROI
Photo of fields and countryside with Fetchify traditional, postal and ceremonial counties
By Fiona Paton October 27, 2025
Counties are one of those quiet curiosities of UK addressing - the kind of data field that often sparks more debate than you’d expect. Should they be included? Which kind? And do we even need them anymore? As with so many things in data, the answer is: it depends. Three Counties, One Country In the UK, the word “county” doesn’t describe one single thing. It describes at least three - each with its own history, purpose, and quirk: Postal counties were once the backbone of the Royal Mail’s sorting system. They helped machines (and people) get mail to the right place efficiently. But in 1996, Royal Mail officially dropped them, and by 2010, county data was removed from the official address dataset entirely. For the postal system, counties simply no longer exist. Traditional (or historic) counties trace their origins back centuries — the counties of record, land, and local identity. They don’t match today’s administrative borders, but they persist in cultural memory and local pride. To some, these are the real counties of England. Ceremonial counties , meanwhile, are what most modern maps and local authorities recognise today. They loosely align with lieutenancy areas — the basis for everything from local government to BBC weather maps. And just to add another layer, the UK also has metropolitan and non-metropolitan counties used for administration, because nothing in British geography would be complete without a little complexity. So… Do We Still Need Them? For Royal Mail, the answer is simple: no. County names are ignored by modern sorting systems, and they don’t affect delivery. But in the real world of databases, integrations, and overlapping address systems, the answer is less clear-cut. Counties still appear because: Some legacy systems require a county field for validation. Some organisations and couriers still use them for regional routing. And sometimes, humans just like them — they help people orient themselves, especially in places with duplicate town names. It’s a reminder that addresses aren’t just for machines. They’re for people, too — and people often bring context, emotion, and memory into their sense of “place.” The Bigger Picture: One World, Many Formats  Counties are just one example of how geography, history, and technology collide in addressing. Every country — sometimes every region — does it differently. Some use regions, provinces, or prefectures. Some rely on hierarchies of towns and municipalities. Others have no subdivisions at all. For global platforms and data validation providers, that diversity creates a fascinating challenge: how do you standardise something that isn’t standard anywhere? It’s the quiet work of address intelligence — understanding not just where something is, but how people describe it. Why This Matters The goal of address accuracy isn’t to erase local identity or force uniformity; it’s to understand and support variation intelligently. Whether you’re sending a parcel, mapping customer data, or building systems that work across borders, knowing how and why these differences exist is part of getting the data right. So next time you’re faced with that little “County” field — think of it not as a relic, but as a reminder. Behind every address is a history, a structure, and a story. And understanding that story is where true data quality begins.
Show More