Grid Point Code
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Coyoacán

Mexico CityMexico

Grid Point Code for Coyoacán
With a code
#GD36L-NG803
Said aloud
Coyoacán NG803

Get the code for your door

What the code says

The Grid Point Code for Coyoacán is #GD36L-NG803. It names a cell 2.56 m north to south and 3.23 m east to west, centred on 19°20'48.12"N, 99°09'42.29"W, 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 Coyoacán, near its centre.

Code
#GD36L-NG803
With a check character
#GD36L-NG803*4
Short form
NG803
Cell centre
19.346700, -99.161748
Cell size
2.56 m by 3.23 m
Region
Mexico City
Country
Mexico
Population
614,447

How to give this address

On a sign, a form or a delivery note

The whole code, #GD36L-NG803. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Mexico City

Coyoacán NG803: 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 5.0 km east or west of Coyoacán. 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

#GD36L-NG803*4. 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 50.4 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. GD36Metropolitan area40 km by 50.4 km
  2. GD36LDistrict8 km by 10.1 km
  3. GD36LNSuburb1.6 km by 2.02 km
  4. GD36LNGA few streets320 m by 403 m
  5. GD36LNG8Building64 m by 80.7 m
  6. GD36LNG80Entrance12.8 m by 16.1 m
  7. GD36LNG803Doorway2.56 m by 3.23 m

More in Mexico

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