Two Sets of County Population Estimates: How and Why Do they Differ? • Signe I. Wetrogan, Independent Consultant

Changes to the Housing Stock: Loss of Housing Units • Warren A. Brown, Cornell University ; Jan Vink, Cornell University ; Joseph Salvo, New York City Department of City Planning ; Peter Lobo, New York City Department of City Planning

Applications of the Cohort-Component Model for Structuring Housing-Unit Based Total Population Estimates into Categories of Age and Sex: A Pilot Test in New Mexico • Jack Baker, University of New Mexico ; Aldemar Alcantara, University of New Mexico ; Xiaomin Ruan, University of New Mexico

Investigating the Use of Holt-Winters Time Series Model for Forecasting Population at the State and Sub-State Levels • Amanda Walters, University of Virginia ; Qian Cai, University of Virginia