Sites using Postcodes.io
Open API for UK postcode and geolocation lookups.
Get told when a new site ships with Postcodes.io.
Stackdar watches every launch we detect and sends you the ones using Postcodes.io, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work61 sites
59 found by StackScope, 2 via launch platforms
- StackScope Discovery (Indie) 32
- StackScope Wider Web 27
- Product Hunt 2
Postcodes.io has been detected on 61 launches we've crawled, with 38 of those in August 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Can I Hang Out My Washing? | HangWashing, today.
It's most commonly paired with Cloudflare DNS, Cloudflare, and HTTP/3. By product type, the launches using it are most often Productivity (35%), E-commerce (24%), and Health (12%). By estimated origin, most come from the United Kingdom (95%).
What kind of products ship with Postcodes.io
17 launches
Domain endings using Postcodes.io
61 sites
- .uk 63.93%
- .com 19.67%
- .co 4.92%
- .online 3.28%
- .ai 1.64%
- .app 1.64%
- .my 1.64%
- .net 1.64%
Country-coded domains
41 of 61 sites. Mostly read from the domain ending, so the US is undercounted.
-
United Kingdom
95.12%
-
India
2.44%
-
Malaysia
2.44%
Share of new sites using Postcodes.io
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
Data API leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 |
LocalLogic
|
0.04% | 16.93% | |
| #2 |
The Movie Database
|
0.02% | 7.47% | |
| #3 |
Frankfurter
|
0.01% | 4.05% | |
| #4 |
ViaCEP
|
0.01% | 3.81% | |
| #5 |
Daum Postcode
|
0.01% | 3.72% | |
| … | ||||
| #12 |
Postcodes.io
Current page
|
<0.01% | 1.66% | |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Data API tool. All 658 in Data API →
Often used with
| Tool | Launches |
|---|---|
Cloudflare DNS
|
2 |
Cloudflare
|
2 |
| HTTP/3 | 2 |
| HSTS | 2 |
Google Workspace
|
1 |
Tools most often detected on the same launches as Postcodes.io.
Recent launches we can show
34 of the 61 sites using Postcodes.io are product launches we list individually. The other 27 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
Roadworthy | Vehicle MOT History, Tax Check & Garage Tracker
Graftie — AI-Native Trade Business Platform
Productivity
Crueue · Hospitality shifts in London
港食地圖 — 全英港式・港人餐廳・茶餐廳・點心 | Hong Kong restaurants in the UK
CardSeeker | Searchable Card Inventory for UK Vendors & Stores
E-commerce
Round The Table — business networking events near you
RenteRoo - Property management for Welsh landlords
PitchFree — UK's Online Car Boot Sale | Sell Secondhand Items Locally
E-commerce
Compare UK funeral directors: prices & reviews | Fair Funerals
Mule-it | Big stuff, delivered
Baby and toddler classes near you | FamilyPlans
Showing the most recent 12 of 34.
The StackScope API serves all 61 sites using Postcodes.io, filterable and exportable, from £15 a month.