What Is Urban? Comparing a Satellite View with the Demographic and Health Surveys
Version of Record online: 11 SEP 2013
© 2013 The Population Council, Inc.
Population and Development Review
Volume 39, Issue 3, pages 413–439, September 2013
How to Cite
Dorélien, A., Balk, D. and Todd, M. (2013), What Is Urban? Comparing a Satellite View with the Demographic and Health Surveys. Population and Development Review, 39: 413–439. doi: 10.1111/j.1728-4457.2013.00610.x
- Issue online: 11 SEP 2013
- Version of Record online: 11 SEP 2013
Appraisal of urbanization trends is limited by the lack of a globally consistent definition of what is meant by urban. This article seeks to identify and explain differences in the definition of “urbanness” as used in two largely distinct research communities. We compare the Global Rural–Urban Mapping Project (GRUMP), which defines urban areas based primarily on satellite imagery of nighttime lights, to the urban classification found in Demographic and Health Surveys (DHS), which relies on the urban definitions of individual countries' national statistical offices. We analyze the distribution of DHS clusters falling within and outside of GRUMP urban extents and examine select characteristics of these clusters (notably, household electrification). Our results show a high degree of agreement between the two data sources on what areas are considered urban; furthermore, when used together, GRUMP and DHS data reveal urban characteristics that are not evident when one data source is used independently. GRUMP urban extents are overwhelmingly medium and large highly electrified localities. DHS clusters that are classified as non-urban but that fall within GRUMP extents tend to be peri-urban areas.