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)
Harris County Dangerous Sites
Harris County Pollution Control Dangerous Sites
Hub keywords: HPC;DAS;Permits
Hub keywords: HPC;DAS;Permits
NOAA National Centers for Environmental Information (NCEI) rain gage station used for the development of the Double Bayou Watershed Protection Plan.
Double Bayou subwatershed project boundary as used in development of and analysis for the watershed protection planning efforts.
Double Bayou subwatershed project boundary as used in development of and analysis for the watershed protection planning efforts.
Double Bayou watershed project boundary as used in development of and analysis for the watershed protection planning efforts.
TCEQ stations for development of the Double Bayou Watershed Protection Plan.
TCEQ stations for development of the Double Bayou Watershed Protection Plan.
Five monitoring stations established in partnership with the USGS for data collection pertaining to the development of and analysis for the Double Bayou...
The Child Opportunity Index 2.0 (COI) for 2010 launched in 2020. COI measures and maps the quality of resources and conditions (e.g., good early childhood education centers and schools, green spaces, access to healthy food, low poverty) that matter for children to develop in a he…
The Child Opportunity Index 2.0 (COI) for 2015 launched in 2020. COI measures and maps the quality of resources and conditions (e.g., good early childhood education centers and schools, green spaces, access to healthy food, low poverty) that matter for children to develop in a he…
* * * FINAL AS OF 8/4/2014 * * * Displays debris maintenance sub-zones within each Precinct. Used to determine responsibility for specific road maintenance during an event, such as a hurricane.
[City of Houston] This dataset is a list of the department of the City of Houston.
[Solid Waste Management] A list of Disposal and Recycling Facilities serviced by the City of Houston Solid Waste Management Department. See http://houstontx.gov/solidwaste/recycling_map for the most...
HCSO District Beats
District Beats
Feature layer generated from running the Find by Attributes and Location analysis tool.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This WebLayer is where filters are applied to the district layers.
This map layer depicts the climate zone designations used by the U.S. Department of Energy Building America Program by county boundaries (generalized).
The DOE working definition for DACs has been developed by an internal and external collaborative process and includes data for thirty-six (36) indicators collected at the census tract level. These 36 indicators can be grouped across the following categories (numbers in parenthesi…
This map shows the energy burden or percent of their income that is used to pay for energy bills for Texans earning 80% or less of Area Median Income in Louisiana.
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.