Geospatial data
Geographic & GIS data
Map the most important geodata sources in the US, and get a practical framework for combining elevation models, addresses, environmental, and climate data in your projects.
Precise Location
Combine parcel boundaries and address data for accurate property identification and boundary determination.
Climate Resilience
Use terrain models and hydrological data to assess flood risk and storm water management needs.
Development Planning
Analyze zoning maps and land use plans to identify development potential and restrictions.
Strategy for working with geodata
A strong geodata strategy ensures that investments in data, licenses, and expertise deliver value.
Data Collection
Identify and retrieve relevant geodata from official sources like USGS, Census Bureau TIGER, and FEMA.
Harmonization
Ensure all datasets use the same coordinate reference system (typically NAD83 or WGS84) for accurate overlap.
Analysis & Visualization
Use GIS tools to create overview maps and extract insights through spatial analysis.
Key geodata sources
Use this catalog as a reference when planning new analyses. Each category includes links, descriptions, and access methods.
Elevation & Terrain
USGS National Map
Visit →Comprehensive elevation and terrain data from the USGS National Map. Covers the entire United States with multiple resolution options.
Access: Free download via USGS National Map Viewer and APIs.
NOAA Elevation Data
Visit →NOAA provides coastal elevation data, bathymetry, and topographic information essential for coastal property analysis.
Access: Free access via NOAA National Geophysical Data Center.
Parcel Boundaries & Addresses
Census Bureau TIGER/Line
Visit →The official geographic framework for the United States. TIGER/Line files contain parcel boundaries, roads, and administrative boundaries.
Access: Free download from Census Bureau TIGER products.
USPS Address Data
Visit →Official USPS address data for all addresses in the United States. Essential for address validation and geocoding.
Access: USPS licensed products and approved vendor data.
Regrid Parcel Data
Visit →Standardized parcel boundaries covering 155+ million parcels across the United States with ownership and land use attributes.
Access: Commercial subscription with various licensing options.
Flood & Environment
FEMA Flood Maps
Visit →Official FEMA flood hazard maps showing Special Flood Hazard Areas (SFHAs) and risk assessments for all counties.
Access: Free access via FEMA Flood Map Service Center.
EPA Envirofacts
Visit →Environmental contamination data including Superfund sites, brownfields, and water quality information for property environmental assessment.
Access: Free search and download via EPA Envirofacts.
Specialized Geodata
USDA NAIP Imagery
Visit →USDA National Agricultural Imagery Program provides high-resolution aerial imagery for the continental US, updated on a multi-year cycle.
Access: Free download via USDA Geospatial Data Gateway.
Copernicus Land Monitoring
Visit →European satellite-based datasets that complement US geodata with time series and thematic layers for global analysis.
Access: Free download and API access with global coverage.
Next steps
Ready to turn geodata into action? Combine official datasets with your own business data to build dashboards, planning tools, and reports that support decision-making.