Hongkou
ShanghaiChina
- With a code
#L9HMP-22JH5- Said aloud
- Hongkou
22JH5
What the code says
The Grid Point Code for Hongkou is #L9HMP-22JH5. It names a cell 2.56 m north to south and 2.92 m east to west, centred on 31°14'59.97"N, 121°29'21.00"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 Hongkou, near its centre.
- Code
#L9HMP-22JH5- With a check character
#L9HMP-22JH5*D- Short form
22JH5- Cell centre
- 31.249993, 121.489167
- Cell size
- 2.56 m by 2.92 m
- Region
- Shanghai
- Country
- China
- Population
- 687,500
How to give this address
- On a sign, a form or a delivery note
The whole code,
#L9HMP-22JH5. It needs nothing else: no city, no street, no network to read it back.- Said aloud, in Shanghai
Hongkou 22JH5: 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 4.6 km east or west of Hongkou. 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
#L9HMP-22JH5*D. 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 45.7 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.
- L9HMMetropolitan area40 km by 45.7 km
- L9HMPDistrict8 km by 9.14 km
- L9HMP2Suburb1.6 km by 1.83 km
- L9HMP22A few streets320 m by 365 m
- L9HMP22JBuilding64 m by 73.1 m
- L9HMP22JHEntrance12.8 m by 14.6 m
- L9HMP22JH5Doorway2.56 m by 2.92 m
More in China
City, region and population from GeoNames, under CC BY 4.0.