Teaching and learning about demographics and population change in an effective, engaging manner is enriched and enlivened through the use of web mapping tools and spatial data. These tools, enabled by the advent of cloud-based geographic information systems (GIS) technology, bring problem solving, critical thinking, and spatial analysis to every classroom instructor and student. Because modern web GIS platforms are open for anyone to contribute, data quality runs the gamut from poor and/or a complete lack of metadata to authoritative, curated, well-documented sources. Therefore, students need to be critical in using online maps, examining the source, date, author, and other pertinent information. With the flood of information available today, students also need to be able to deal with the limitations and benefits of working with and managing data. These tools provide a way of exploring a body of content knowledge and the geographic perspective (Bednarz 2004; Kerski 2008), identified as essential to primary and secondary education (National Academy of Sciences 2006). The number of maps and data layers available for teaching about demographics and population change extend beyond the scope of this article, so this article focuses on eight resources and methods: (1) Examining world population and demographic data by country with the Living Atlas of the World; (2) examining population dynamics using the Center for International Earth Science Information Network (CIESIN) map viewer; (3) examining demographic patterns in selected cities using the Urban Observatory; (4) comparing world population density, latitude, altitude, and ecoregions; (5) examining regional change with satellite imagery using the Landsat Lens; (6) investigating local changes with historical maps and imagery; (7) examining demographic relationships and trends at the local scale; and (8) examining population trends over time and by country with Gapminder.