Barcelona

CataloniaSpain

With a code: #J0C42-T73H9
Said aloud: Barcelona T73H9

What the code says

The Grid Point Code for Barcelona is #J0C42-T73H9. It names a cell 2.56 m north to south and 2.57 m east to west, centred on 41°23'19.65"N, 2°09'32.35"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 Barcelona, near its centre.

Code: #J0C42-T73H9
With a check character: #J0C42-T73H9*H
Short form: T73H9
Cell centre: 41.388791, 2.158986
Cell size: 2.56 m by 2.57 m
Region: Catalonia
Country: Spain
Population: 1,686,208

How to give this address

On a sign, a form or a delivery note: The whole code, #J0C42-T73H9. It needs nothing else: no city, no street, no network to read it back.
Said aloud, in Catalonia: Barcelona T73H9: 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 4.0 km east or west of Barcelona. 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: #J0C42-T73H9*H. 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 40.1 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.

J0C4Metropolitan area40 km by 40.1 km
J0C42District8 km by 8.02 km
J0C42TSuburb1.6 km by 1.6 km
J0C42T7A few streets320 m by 321 m
J0C42T73Building64 m by 64.1 m
J0C42T73HEntrance12.8 m by 12.8 m
J0C42T73H9Doorway2.56 m by 2.57 m

More in Spain

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