Population, Land Use, and Emissions (PLUE)
Recent Data
Global Rural-Urban Mapping (GRUMP) | Gridded Population of the World (GPW) | U.S. Census Grids | Population, Landscape and Climate Estimates (PLACE)
Older Data
Census Archive | China Dimensions | Global Population Database | Mexico Demography
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| DDViewer | DDCarto | Geocorr |
This is the home page of SEDAC's Population, Land Use, and Emissions (PLUE) mission area. The purpose of this mission area is to provide population and other socioeconomic data derived from censuses in formats that facilitate their integration with Earth and environmental science data. This mission area includes some of SEDAC's flagship data products: GPW, GRUMP, and the U.S. Census Grids. Typically the data are transformed from vector representations of census enumeration areas into raster grids that facilitate analysis of population numbers, density, and characteristics for different geographies (e.g., river basins, the coastal zone, and mountain areas). For example, the PLACE data product utilizes the GPW population grids to create a tabular database of country-level population and land area distribution by biome, climate zone, proximity to coast, and elevation.
Data users are encouraged to visit the World Data Center (WDC) Thematic Portal on Population for news bulletins on related data products, and the SEDAC Map Client for visualization of the recent data products described on this page.
Recent Datacent Data
Global Rural-Urban Mapping Project
The Global Rural-Urban Mapping Project (GRUMP) provides a new suite of data products that add urban-rural specification to the Gridded Population of the World (see below). This project was developed out of a need for researchers to be able to distinguish population spatially by urban and rural areas. The central data product resulting from GRUMP is a Gridded Population of the World with Urban Reallocation with a grid cell resolution of 30 arc-seconds. The data collection also includes a land area grid showing worldwide urban areal extents and a database of human settlements, their spatial coordinates, and populations. GRUMP is currently in its alpha version.
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Gridded Population of the World
Gridded Population of the World (GPW v3) depicts the distribution of human populations across the globe. Version 3 is the most detailed version of GPW to date, with more than three times the amount of input data as the previous version. GPW v3 includes population and population density estimates referenced to a grid of 2.5 x 2.5 minute latitude-longitude quadrilateral grids for 1990-2015 in five year increments. The collection includes maps, documentation and data for on-line viewing and downloading.
The U.S. Census Grids provide raster data sets that include not only population and housing counts, but a wide variety of socioeconomic characteristics. These gridded data sets transform irregularly shaped census block and block group boundaries into a regular surface—a raster grid—for faster and easier analysis. Block-level vector data are available as shapefiles with census data attached. Data sets are currently available for the year 2000.
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Population, Landscape and Climate Estimates (PLACE)
Version two of the Population, Landscape, and Climate Estimates data set, PLACE II, has been released as part of SEDAC’s National Aggregates of Geospatial Data Collection. The aim is to provide country-level measures of spatial characteristics of 228 nations to researchers for whom national aggregates are more useful than GIS data. PLACE II estimates the number of people (head counts and percentages) and the land area (square kilometers and percentages) represented within each class of a number of demographic, physical, biological, and climatic variables for each country around the world, for the years 1990 and 2000. These variables include biomes, climate zones, coastal proximity zones, elevation zones, and population density zones. The full data array of nearly 300 variables, tabulated by country, is available for download in Excel spreadsheet format, together with supporting documentation. The PLACE II map collection displays examples of input variables and country dynamics via more than 40 maps at global, continental, and detailed scales.
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Older Data
Archive of Census-Related Products
The Archive of Census-Related Products contains Boundary Files, Standard Extract Files, Enhanced Migration Files, an Intersection Data Set, and ZIP Equivalency Extract Files derived from selected U.S. Bureau of the Census data sets. The Boundary Files are a derived product from TIGER 1992 (Topologically Integrated Geographic Encoding and Referencing) files (Version 5). Files have been generated by county for all census blocks and street intersections. The Standard Extract Files are based on Summary Tape File 3A (STF3A) for the 1990 U.S. Census. The Enhanced Migration Files are state files with “population in” and “population out” fields on each record to facilitate net-migration calculations by age, race, sex, or other variables from 1985 to 1990. The Intersection Data Set was created from the TIGER 1992 files. This data set shows the intersections, street names, and the latitude-longitude of intersections. The ZIP Equivalency Extract Files contain selected census block demographic data with 5-digit ZIP codes within each State (including county portions of the ZIP codes).
The U.S. Demography Home Page is part of an initiative to identify, document, and provide simple access to demographic information concerning the U.S. This home page consists of a series of cascading hypertext links providing access to national data resources, online supporting documentation (codebooks, data dictionaries, citations), and extraction tools for data access. You may connect to an anonymous ftp service for data file retrieval.
The China Dimensions Data Collection provides guides for and access to a rich collection of data resources on the People's Republic of China. Highlights include digital administrative boundaries; fundamental GIS layers; county-level data on population, agriculture, economics and hospitals; and interactive access to the 1982 census of population.
The Global Population Database was developed by the International Programs Center (formerly the Center for International Research) of the U.S. Bureau of the Census. The database maps populations of either 20 minutes of latitude by 30 minutes of longitude for developing countries or 5 minutes by 7.5 minutes for developed countries. You may refer to the Data Set Guide for Global Population Database for a detailed description of the database and information on how to access it.
Georeferenced Population Data Sets of Mexico
The Georeferenced Population Data Sets of Mexico were developed as part of a CIESIN initiative to provide scientists with spatially referenced demographic data for conducting assessments of human interactions with the environment. The collection consists of the following products: Population Database of Mexico; Urban Place, Time-Series Population Spreadsheet of Mexico; Urban Place Geographic Information System (GIS) of Mexico; GIS of Mexican Localities; GIS Coverage of Mexican States; GIS Coverage of Mexican Municipalities; and Raster-based Coverage of Mexican Population. The Data Set Guide for the Georeferenced Population Data Sets of Mexico presents a detailed discussion of the database and information on how to access it.
Demographic Data Viewer (DDviewer)
DDViewer provided rapid data mapping, viewing and analysis to the internet community. It supported U.S. Census demographic data (STF3A 1990) and Boundary Files (TIGER 1992) which cover all the U.S. states, counties, county subdivisions, census tracts and blockgroups for more than 200 variables of population, housing, education, employment, etc.
US-Mexico Demographic Data Viewer
US-Mexico DDViewer was an interactive application that provides rapid, interactive data mapping, viewing, and analysis of more than 200 socioeconomic variables that are congruent between the United States and Mexico. It was used for browsing and visualizing patterns at geographic levels ranging from regions to counties/municipios.
For online maps of U.S. Census data we suggest visiting Social Explorer.
Demographic Data Cartogram Service (DDcarto)
DDCarto provided digital coverages of U.S. Census demographic data to GIS users. This GIS format conversion service supported Atlas GIS®, ArcInfo® and MapInfo® data formats. Data included boundaries and attributes from the CIESIN Archive of Census Related Products (described above) at county, census tract, block group and block resolution for all 50 states.
ArcInfo format boundary files for 1990 and 2000 may be downloaded from the US Census Bureau.
2000 census data in raster format are available from SEDAC's U.S Census Grids (see above). Additional data in tabular format can be found at the U.S. Census Bureau's FactFinder web site.
Geographic Correspondence Engine (Geocorr)
Geocorr created geographic correspondence files between different geographic summary levels. It determines the amount of intersection between units of one geographic level and those of another. This is useful for to move data between counties and five-digit zip codes, or other geographies.
The most recent version of Geocorr, which includes year 2000 and later geocodes, is available from the Missouri Census Data Center.
