Open Source Geospatial data that costs free dollars

Free data sources, mostly geospatial

Aerial/Satellite Imagery

• 7 Free Sat Imagery Sources (2019)

Climate Data

• NOAA historical climate data

Topo Data

• List of Resources from Carleton College
• GISGeography's DEM Sources

Socioeconomic Data

• Socioeconomic Data and Applications Center
• Perry-Castaneda Map Collection at UT Austin

Admin Areas and Boundaries

• World Administrative Areas
• U.N. Second Admin. Level Boundaries
• World Borders Dataset - kml based, has JS API
• Military Grid Reference Systems

Multi-Feature

• Natural Earth

Environmental and Natural Resource Data

• USDA's geospatial data gateway
• U.S. Fish and Wildlife Service Catalog
• Bureau of Land Management
• National Hydrology Dataset Info
• U.S. Environmental Protection Agency Open Data Catalog

Location-Specific

Colorado

• Colorado's Decision Support Systems

Texas

• Texas Natural Resources Information System

Diagrams