Us county population density 2017 map series#

NASA Socioeconomic Data and Applications Center (SEDAC).įoresight Project on Migration and Global Environmental Change, Report MR4: Estimating Net Migration by Ecosystem and by Decade,1970-2010.

Us county population density 2017 map series#

Global Population Density Grid Time Series Estimates.

Recommended Citation(s)*:Ĭenter for International Earth Science Information Network - CIESIN - Columbia University. These population grids served as an input to SEDAC's Global Estimated Net Migration Grids by Decade: 1970-2000 data set. The population grids are consistent internally within the time series, but are not recommended for use in creating longer time series with any other population grids, including GRUMPv1, Gridded Population of the World, Version 4 (GPWv4), or non-SEDAC developed population grids. Data Tools QuickFacts American FactFinder (2017 data will be available Jan. These data do not represent census observations for the years prior to 2000, and therefore can at best be thought of as estimations of the populations in given locations. Population Up 5.96 Since 2010 DecemOn April 1, 2010, the population of United States was 308,758,105 compared with 327,167,434 on July 1, 2018, a change of 5.96 percent. Finally, the grids were adjusted so that the population totals for each country equaled the UN World Population Prospects (2008 Revision) estimates for that country for the respective year (1970, 1980, 1990, and 2000). Mismatches between the spatial extent of the HYDE calculated rates and GRUMPv1 population data were resolved via infilling rate cells based on a focal mean of values. The grids were created by using rates of population change between decades from the coarser resolution History Database of the Global Environment (HYDE) database to back-cast the GRUMPv1 population density grids.

We also post census estimates for age, sex. Abstract: The Global Population Density Grid Time Series Estimates provide a back-cast time series of population density grids based on the year 2000 population grid from SEDAC's Global Rural-Urban Mapping Project, Version 1 (GRUMPv1) data set. The Weldon Cooper Center produces the official population estimates for Virginia and its cities and counties. Purpose: To provide back-cast population density estimates at 30 arc-second (~1 km) resolution.