Grid Point Code
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Seoul

South Korea

Grid Point Code for Seoul
With a code
#L0T4L-K78LM
Said aloud
Seoul K78LM

Get the code for your door

What the code says

The Grid Point Code for Seoul is #L0T4L-K78LM. It names a cell 2.56 m north to south and 2.71 m east to west, centred on 37°33'57.58"N, 126°58'42.24"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

The point used is the one GeoNames records for Seoul, near its centre, and Seoul is the capital of South Korea.

Code
#L0T4L-K78LM
With a check character
#L0T4L-K78LM*P
Short form
K78LM
Cell centre
37.565994, 126.978401
Cell size
2.56 m by 2.71 m
Country
South Korea
Population
10,349,312

How to give this address

On a sign, a form or a delivery note

The whole code, #L0T4L-K78LM. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in South Korea

Seoul K78LM: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 4.2 km east or west of Seoul. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#L0T4L-K78LM*P. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 42.4 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

  1. L0T4Metropolitan area40 km by 42.4 km
  2. L0T4LDistrict8 km by 8.47 km
  3. L0T4LKSuburb1.6 km by 1.69 km
  4. L0T4LK7A few streets320 m by 339 m
  5. L0T4LK78Building64 m by 67.8 m
  6. L0T4LK78LEntrance12.8 m by 13.6 m
  7. L0T4LK78LMDoorway2.56 m by 2.71 m

More in South Korea

City, region and population from GeoNames, under CC BY 4.0.