Esri Demographic Data Most Accurate in Blind Study

Unprecedented Review Includes Top US Data Vendors

Redlands, California— May 21, 2012— Esri data estimates proved to be the most accurate in a recent blind data study. Several top demographers conducted this unprecedented study of demographic forecasts that covered the entire United States at four geography levels.

Esri commissioned the study from Cropper GIS, which included estimates from Esri and four other leading US data vendors to measure the accuracy of each company's demographic forecasts benchmarked against Census 2010 results. Of the five vendors used in this research, Esri was determined to be the most accurate across all geographies, especially at smaller geographies that are more difficult to forecast.

"Because an analysis of this magnitude—especially at the census tract and block group geography levels—has never before been undertaken, the research provides groundbreaking insight into error analysis and the testing of error measurement," said Lynn Wombold, Esri Chief Demographer.

To conduct the study, Cropper GIS assembled a renowned team of demographers and geographers who specialize in population and housing forecasting. The team consisted of Jerome N. McKibben, PhD, McKibben Demographic Research; David A. Swanson, PhD, University of California, Riverside; Jeff Tayman, PhD, University of California, San Diego; and Matthew Cropper, GISP, Cropper GIS.

Drs. McKibben, Swanson, and Tayman are noted authorities on small-area forecasts and measures of forecast accuracy and have written and presented papers extensively on these subjects. Cropper has a broad background in geographic information systems (GIS) and demographic analysis. The researchers did not know the identity of the vendors or the methodologies the vendors used to update their data.

Demographic forecasts are used extensively for government fund allocation, school districting, real estate development, locating health and emergency services, and other applications. Reduced data error ensures that funds and services are provided in areas where the need is greatest.



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About Esri

Since 1969, Esri has been giving customers around the world the power to think and plan geographically. The market leader in GIS technology, Esri software is used in more than 300,000 organizations worldwide including each of the 200 largest cities in the United States, most national governments, more than two-thirds of Fortune 500 companies, and more than 7,000 colleges and universities. Esri applications, running on more than one million desktops and thousands of web and enterprise servers, provide the backbone for the world's mapping and spatial analysis. Esri is the only vendor that provides complete technical solutions for desktop, mobile, server, and Internet platforms. Visit us at

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