Professor Phillips has been interested in how data can help inform planning issues. Before retiring in May 2011, he taught courses in quantitative methods and information technology applications in urban and environmental planning. 

He taught the application of Geographic Information Systems to planning problems and introductory Digital Visualization for Planners.

He worked with William H. Lucy on the changes that have been occurring in the nation’s suburban places and cities. Their 2000 book “Confronting Suburban Decline: Strategic Planning for Metropolitan Renewal” by Island Press addressed many of the trends from 1960 to 1990.   Their more recent book Tomorrow's Cities, Tomorrow's Suburbs published by APA Planners Press highlighted how some city neighborhoods and some older suburbs show promise welcoming places. The book focuses on all 542 cities in 312 metropolitan areas, 2586 suburbs in the nation's largest 25 metropolitan areas, and detailed census tract information from 1970 through 2000 in six metropolitan areas. Population change, income change, vintage of housing stock, household size are among the variables explored. The myth of safety in suburbs and exurbia is also explored.

Professor Phillips participates in the UVAGIS, a group of faculty and researchers at the University using GIS in their research.  He also participates professionally with local and state GIS user groups.

Recent GIS work has included Hazard Assessment, Housing Policy Atlas and Mapping for understanding the "landscape of aging" and transportation and housing spatial perspectives of persons with disabilities.

He continues adjunct teaching at the University of Virginia and advises local jurisdictions and non-profit organizations on demographic trends and mapping local information.

His teaching philosophy focuses on creating situations and providing materials that leave both students and him open to surprise.

Areas of specialization:
Geographic Information Systems with applications to Urban and Environmental Planning
Urban demographics
Analysis of census data
Community Development with Faith-based non-profit organizations.
Suburban population and economic conditions.