Grid Point Code

Play

Port Harcourt

Rivers StateNigeria

With a code
#JPF5M-9K2P9
Said aloud
Port Harcourt 9K2P9

Get the code for your door

What the code says

The Grid Point Code for Port Harcourt is #JPF5M-9K2P9. It names a cell 2.56 m north to south and 3.41 m east to west, centred on 4°46'38.73"N, 7°00'48.21"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 Port Harcourt, near its centre.

Code
#JPF5M-9K2P9
With a check character
#JPF5M-9K2P9*H
Short form
9K2P9
Cell centre
4.777425, 7.013391
Cell size
2.56 m by 3.41 m
Region
Rivers State
Country
Nigeria
Population
2,120,000

How to give this address

On a sign, a form or a delivery note

The whole code, #JPF5M-9K2P9. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Rivers State

Port Harcourt 9K2P9: 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 Port Harcourt. 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

#JPF5M-9K2P9*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 53.2 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. JPF5Metropolitan area40 km by 53.2 km
  2. JPF5MDistrict8 km by 10.6 km
  3. JPF5M9Suburb1.6 km by 2.13 km
  4. JPF5M9KA few streets320 m by 426 m
  5. JPF5M9K2Building64 m by 85.2 m
  6. JPF5M9K2PEntrance12.8 m by 17 m
  7. JPF5M9K2P9Doorway2.56 m by 3.41 m

More in Nigeria

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