Houston and Harris County publish a huge amount of open data, scattered across dozens of portals nobody tracks. This catalog lists every dataset we've found in one place, whether or not it's loaded into the explorer. Know a source we're missing? Add it, and it's shared with everyone.
| Source | What it is | Items | Loaded |
|---|---|---|---|
| Harris County ArcGIS Online services.arcgis.com |
One organization shared by county departments, precincts and staff. Mixes authoritative layers (fire stations, parks, crashes) with many working copies and one-off maps; review before use. | 3,112 | 16 |
| Rice University ArcGIS Online services.arcgis.com |
Research and class projects. Houston gems (HCFCD buyout lots, draft 2026 FEMA flood map, historical census, redlining) among worldwide student work. Research copies of agency data need permission before reuse. | 2,888 | 0 |
| Houston Advanced Research Center (HARC) ArcGIS Online services2.arcgis.com |
Environmental and regional research layers; source of the 2021 city cool-center list. | 528 | 1 |
| City of Houston GIS (ArcGIS Hubs) geohub.houstontx.gov |
Two Hub sites (Public Works geohub, citywide mycity) over several ArcGIS servers. Official. | 314 | 119 |
| Harris County Flood Control District ArcGIS Online services2.arcgis.com |
High-water marks, floodplains, projects, acreage by program. Source of the storm HWM layers. | 265 | 4 |
| City of Houston Open Data (data.houstontx.gov) data.houstontx.gov |
Separate from the GIS hubs. Mostly spreadsheets; finance (checkbook, payroll, budget) and census stay current, much else frozen since a 2023 migration. | 94 | 0 |
| U.S. Census Bureau api.census.gov |
4 | 3 | |
| FEMA (OpenFEMA and National Flood Hazard Layer) www.fema.gov |
4 | 3 | |
| U.S. Environmental Protection Agency data.epa.gov |
2 | 2 | |
| Centers for Disease Control and Prevention data.cdc.gov |
2 | 2 | |
| Texas Commission on Environmental Quality www.tceq.texas.gov |
2 | 1 | |
| Texas Water Development Board www.twdb.texas.gov |
1 | 1 | |
| U.S. Geological Survey water data waterservices.usgs.gov |
1 | 0 | |
| City of Houston 311 public data extracts www.houstontx.gov |
1 | 1 | |
| METRO (Harris County transit) www.ridemetro.org |
1 | 0 | |
| Stanford Open Policing Project openpolicing.stanford.edu |
1 | 0 | |
| TxDOT Crash Records Information System (CRIS) cris.dot.state.tx.us |
1 | 0 |
2,869 matches (likely staff working copies and non-Houston research layers hidden)
Centerpoint, Entergy, Oncor, and Pedernales boundaries from HIFLD (https://harcresearch.maps.arcgis.com/sharing/rest/content/items/f4cd55044b924fed9bc8b64022966097/info/metadata/metadata.xml?format=default&output=html) . Austin Energy boundary is from Austin Energy. CPS Energy (h…
Hub keywords: DIR;Misc;Miscellaneous;Parks
Hub keywords: DIR;Misc;Miscellaneous;Parks
METRO's New Bus Network transforms the local bus system from one that is mostly raidial to a more grid-like configuration region-wide. Local routes are simpler and straigher and are more frequent where needed. Bus routes are generally shorter and less complicated for improved r…
Locations for boarding or alighting the Houston METRO bus system. This data is used for map display, query and analysis in Geographic Information System (GIS) software. This data is also imported into, and used in Trapeze FX, a bus scheduling software. From there, the bus stop lo…
GIS analysis & display
The area within which METRO may collect sales tax.
Locations for boarding or alighting the Houston METRO bus system. This data is used for map display, query and analysis in Geographic Information System (GIS) software. This data is also imported into, and used in Trapeze FX, a bus scheduling software. From there, the bus stop lo…
Locations for boarding or alighting the Houston METRO bus system. This data is used for map display, query and analysis in Geographic Information System (GIS) software. This data is also imported into, and used in Trapeze FX, a bus scheduling software. From there, the bus stop lo…
Locations for boarding or alighting the Houston METRO bus system. This data is used for map display, query and analysis in Geographic Information System (GIS) software. This data is also imported into, and used in Trapeze FX, a bus scheduling software. From there, the bus stop lo…
Locations for boarding or alighting the Houston METRO bus system. This data is used for map display, query and analysis in Geographic Information System (GIS) software. This data is also imported into, and used in Trapeze FX, a bus scheduling software. From there, the bus stop lo…
Metro Train Routes near Rice to ravel to Rice from apartments around Houston
Houston flooding by Michaela Haet
Parcel polygon is the delineation of the property boundary
Montgomery County Commissioner Precincts.
Municipal Utility District (MUD) boundaries in Montgomery County, Texas. Updated October 4, 2021.
Hub keywords: TDO;Stormwater
Hub keywords: CIP;Capital Projects
Harris County Most Solid Waste Violation by Complaints
Harris County Most Water Violation with Lab Results
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University
Found Houston or Harris County open data we don't list? A portal, a map service, a spreadsheet on an agency page, a research dataset? Tell us where it is. Reviewed suggestions are added to the catalog for everyone.