Goal & Challenge
Create a single, authoritative source for postal codes across all 25 provinces and Phnom Penh, solving the fragmentation and inaccuracy that plagued e-commerce, logistics, and address validation in Cambodia.
Approach & Process
We aggregated official government data, mapped it to geographic boundaries, and built an interactive Next.js app with search-first UX. We prioritized SEO for organic discovery, mobile responsiveness for field use, and API access for developers. Regular data audits and user feedback loops keep the dataset accurate.
Outcome & Results
The platform now serves 150K+ monthly visitors and 100K+ active users. It ranks highly for Cambodia postal code searches, powers checkout flows for multiple e-commerce sites, and is used by logistics companies for route planning. Uptime exceeds 99.9%.
Lessons Learned
- Local administrative divisions change—quarterly review cycles are essential.
- Rural coverage requires balancing granularity with maintainability.
- SEO and performance directly drive adoption for utility tools.
- Developer APIs and exports multiply impact beyond the main site.