Not loaded
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 Road Log for cataloging managed and unmanaged road segments.
Data Download: Reported Cases Over Time
Aggregate_Summary_Table_Case_stage
Business Analyst Alicia Giles Layers
Business Analyst Alicia Giles Layers
Business Analyst K-12 Enrollment ACS 5-Yr Zipcodes Feature Service
Business Analyst Alicia Giles Layers
[Administration and Regulatory Affairs] The Transportation Section is responsible for issuing licenses and permits to the operators and drivers of several different categories of vehicles for hire that include...
[Administration and Regulatory Affairs] The Transportation Section is responsible for issuing licenses and permits to the operators and drivers of several different categories of vehicles for hire that include...
BS2N Projects in new PCT2 boundary
[Finance Department] List of all Contracts with the City of Houston. E-Catalog Pull Notes: Does not include the vendor name, see the Vendor List resource and join on OA to find the vendor...
[Legacy Portal] The Transportation Section is responsible for issuing licenses and permits to the operators and drivers of several different categories of vehicles for hire that include...
Current, court approved, official commissioner precincts for Harris County TX
Harris County All Pollution Type Violation Counts
ALTIVIA Incident Reading from CTEH 12/04/2023
This layer presents the 2020 U.S. Census Tract boundaries of the United States in the 50 states and the District of Columbia. It includes 2020 U.S. Census codes and population information. Tracts are polygons containing population totals from the 2020 Census and Esri Updated Demo…
A Tree Equity Score is a metric that helps cities assess how well they are delivering equitable tree canopy cover to all residents. The score combines measures of tree canopy cover need and priority for trees in urban neighborhoods (defined as Census Block Groups). It is derived …
Areas of Interest (AOI) within Harris County Precinct 2 derived from parcel classifications, FEMA flood hazard data, and community resilience indicators. The dataset identifies aggregated areas that meet defined suitability criteria and can support planning, prioritization, and s…
[Finance Department] This data represents solicitations for various goods and services for purchases for all departments within the City of Houston that were previously posted on the City’s e-bid site. Both formal (over $50,000.00) and informal ($50,000.00 and under) solicitatio…
Mask for the Armand Bayou watershed
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.