GIS Boundary Data Sources
Geographic boundary data from authoritative government agencies
Geographic boundary data is sourced from authoritative government agencies for interactive maps, spatial queries, and jurisdiction lookups.
| Source | URL | Data Provided |
|---|---|---|
| US Census TIGER/Line | census.gov | US counties, places, county subdivisions, school districts, congressional districts |
| US Census Gazetteer Files | census.gov | Centroid coordinates and land areas for US places and subdivisions |
| California State Geoportal | gis.data.ca.gov | Special district boundaries, LAFCOs, fire districts |
| USGS Protected Areas Database (PAD-US 4.0) | usgs.gov | County and local park facility boundaries from the Fee Managers feature class, filtered to locally managed and owned parks (designation types LP and LREC) |
| MassGIS | mass.gov | Massachusetts town boundaries, school districts |
| NYS GIS Clearinghouse | gis.ny.gov | New York counties, towns, villages boundaries |
| Statistics Canada Boundary Files | statcan.gc.ca | Province, census division, and census subdivision boundaries |
| NRCan Aboriginal Lands | open.canada.ca | Canadian Indian reserves, settlements, and land claims boundaries |
| Ordnance Survey Ireland (OSi) | osi.ie | Irish county boundaries, electoral divisions |
| ONS Geography (UK) | ons.gov.uk | UK council areas, wards, constituencies |
| BIA AIAN-LAR | bia.gov | 335+ US tribal trust/restricted fee land boundaries |
| US Census TIGER AIANNH | census.gov | ~600 US tribal area boundaries (includes state-recognized, Alaska Native villages) |
| NZ Iwi Boundaries | data.govt.nz | ~100 Maori iwi rohe (Fisheries Act Schedule 3) |
| NNTT Spatial Data (Australia) | nntt.gov.au | Australian native title determinations and claims |
| BKG VG250 (Germany) | bkg.bund.de | German state and district administrative boundaries |
| geoBoundaries (Japan, New Zealand) | geoboundaries.org | Prefecture boundaries (Japan), region and territorial authority boundaries (NZ) |
| GADM v4.1 | gadm.org | Administrative boundaries for Algeria, Angola, Argentina, Belgium, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Bulgaria, Burundi, Cambodia, Cameroon, Chad, Chile, China, Colombia, Croatia, Cuba, Czech Republic, DR Congo, Dominican Republic, Ecuador, Egypt, Equatorial Guinea, Eritrea, Estonia, Ethiopia, Finland, France, Gabon, Ghana, Greece, Guatemala, Guinea, Guyana, Honduras, Hungary, Indonesia, Iran, Iraq, Italy, Ivory Coast, Kazakhstan, Kenya, Kosovo, Kyrgyzstan, Laos, Latvia, Lebanon, Libya, Lithuania, Madagascar, Malawi, Malaysia, Mali, Mauritania, Mexico, Moldova, Mongolia, Montenegro, Morocco, Mozambique, Myanmar, Namibia, Nepal, Netherlands, Nicaragua, Niger, Nigeria, North Macedonia, Norway, Pakistan, Palestine, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Republic of the Congo, Romania, Russia, Rwanda, Saudi Arabia, Senegal, Serbia, Sierra Leone, Slovakia, Slovenia, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tunisia, Turkey, Turkmenistan, Uganda, Ukraine, United Arab Emirates, Uruguay, Uzbekistan, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe |