TownNames.co.uk is a UK data exploration website that brings postcode, income, location, property and company-ownership information together in an accessible format. Its main tool, the Postcode Explorer, lets users search a full postcode for detailed results or enter the first two to six characters to explore a wider area. Results can include estimated average annual income and affluence rankings, as well as roads, county, country, population and nearby transport information. For full postcodes, the site may also show 2023 Land Registry sales counts, average property prices and relative price rankings.

TownNames.co.uk also offers a Company Property Search, where visitors can search businesses and browse property records associated with proprietor names, or view company-owned property linked to a full postcode. Its Duplicate Town Names tool helps identify UK towns, villages and places with the same or similar names in different counties. The site describes its data as UK-wide and designed for research and informational use. Some property information contains HM Land Registry data, with copyright and database rights acknowledged.