Global Population Distribution Database
Description of the Database
Download the Database
Three Datasets
The database consists of three datasets which have been compiled in dBase IV format. The datasets are described below:
GlPop90.dbf: Gridded global population distributions for 1990 with 1X1 latitude/longitude resolution
Fields:
- UNCode2 |
United Nations standard ISO Country Codes |
- Country |
Country/region name
|
- Grid
| Grid code number
|
- Pop1990
| Total population contained in each grid cell for
each country
|
- Rate(%):
| The ratio of the population in the cell to total
population of country, not the annual growth.
|
Total population:
| 5,291,059,610
|
Number of Records:
| 12,857
|
Number of Cells:
| 11,783
|
Total Number of Countries:
| 209
|
GridCtry.dbf: The relationship between grid cells and countries (see ref. 1)
Fields:
- Grid
| Grid code number
|
- Cover-Id
| Cover ID Number
|
"0":
| All covered by sea
|
"1":
| Entirely contained in one country
|
"2":
| Shared by two countries
|
"2":
| Shared by two countries
|
"3":
| Shared by three countries
|
"4":
| Shared by four countries
|
"10":
| Shared by one country and ocean
|
"20":
| Shared by two countries and ocean
|
"30":
| Shared by three countries and ocean
|
"40":
| Shared by four countries and ocean
|
- UNCode2
| United Nations standard ISO country codes
|
- Country
| Country/region name
|
- Rate-in-Country (%)
| Percentage of the area of a country contained in each grid cell
|
- Rate-in-Grid (%)
| Percentage of the area of the grid cell occupied by country or the ocean
|
Number of Records
| 25,540
|
Number of Cells:
| 12,200
|
Total Number of Countries:
| 217
|
PopFact.dbf: Rural population distribution factor for 1990 with 1X1 latitude/longitude resolution
Fields:
- Grid
| Grid code number
|
- UNCode2
| United Nations standard ISO country codes
|
- PopFactor
| Rural population distribution factor in grid cell
|
Number of Records:
| 13,227
|
Number of Cells:
| 12,196
|
Number of Countries:
| 210
|
Definition of Grid Code Number
Grid Code Number = (j*1000) + i
j: row number starting at 1 for 90°S to 89°S latitude, to 180 for 89°N to 90°N latitude
i: column number starting at 1 for 180°W to 179°W longitude, to 360 for 179°E to 180°E longitude
The latitude and longitude of the centre of the grid cell is given by:
latitude = (j-91) + 0.5
longitude = (i-181) + 0.5
[ Methodology ||Table of Contents ||
Mail to: Yin-Fan Li]
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