Valledupar

Cesar DepartmentColombia

With a code: #GK0T3-5M31K
Said aloud: Valledupar 5M31K

What the code says

The Grid Point Code for Valledupar is #GK0T3-5M31K. It names a cell 2.56 m north to south and 3.36 m east to west, centred on 10°27'55.36"N, 73°15'11.21"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 Valledupar, near its centre.

Code: #GK0T3-5M31K
With a check character: #GK0T3-5M31K*0
Short form: 5M31K
Cell centre: 10.465379, -73.253115
Cell size: 2.56 m by 3.36 m
Region: Cesar Department
Country: Colombia
Population: 490,075

How to give this address

On a sign, a form or a delivery note: The whole code, #GK0T3-5M31K. It needs nothing else: no city, no street, no network to read it back.
Said aloud, in Cesar Department: Valledupar 5M31K: 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 5.3 km east or west of Valledupar. 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: #GK0T3-5M31K*0. 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 52.5 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.

GK0TMetropolitan area40 km by 52.5 km
GK0T3District8 km by 10.5 km
GK0T35Suburb1.6 km by 2.1 km
GK0T35MA few streets320 m by 420 m
GK0T35M3Building64 m by 84.1 m
GK0T35M31Entrance12.8 m by 16.8 m
GK0T35M31KDoorway2.56 m by 3.36 m

More in Colombia

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