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Sierra Leone

8.8M

Population

71,740

Area (km²)

Freetown

Capital

+232

Country Code

Address Challenge in Sierra Leone

75%

of the population lacks reliable street addresses

With 57% rural population, millions struggle with deliveries, emergency services, and basic civic participation.

WIA Pin Code Solution

WIA Pin Code uses GPS coordinates to generate unique 9-digit addresses for every 3m×3m location. No infrastructure needed - works offline, free for citizens and governments.

Try WIA Pin Code Demo

GPS to WIA Pin Code Converter

Latitude (8.46° typical for Sierra Leone)

Longitude (-11.78° typical for Sierra Leone)

Your WIA Pin Code

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Unique address for this exact location

YUJIN Transform Algorithm:


function yujinTransform(lat, lng) {

  const latPart = Math.floor(((lat + 90) / 180) * 999999);

  const lngPart = Math.floor(((lng + 180) / 360) * 999);

  return `${latPart.toString().padStart(6,'0').slice(0,3)}-${latPart.toString().padStart(6,'0').slice(3)}-${lngPart.toString().padStart(3,'0')}`;

}

Official Proposals

Download official WIA Pin Code implementation proposals for Sierra Leone

English Proposal Korean Proposal

Bring WIA Pin Code to Sierra Leone

Free for governments and citizens. $999/month for enterprise integration.