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)
create date= 12-2-2008 Updated with additional information 1/4/22produced from FPM and HRRM county facilities data for the purpose of isolating Justice of Peace Courthouses from larger data set which was not descriptive enough to query JP courthouses.
Addresses - Persons In Motion Pauline 2 Harrison Street dwelling
Persons In Motion Building Edward Ancestors Church
Persons In Motion Edward School PS 83
Persons In Motion Edward School PS 83
Persons In Motion Edward School PS 83
Persons In Motion Edward's Trajectory and Houses Up to Hancock
Persons In Motion Edward's Trajectory and Houses Up to Hancock
Business Analyst Patrick Johnson layers
Point locations representing Places of Worship within Harris County Precinct 2. The dataset includes descriptive attributes and publicly available information on community services offered or supported by each location, such as food assistance, mental health resources, health scr…
[Legacy Portal] GIS feature classes of several key City data polygons used to identify a plat location for attribution for reporting and routing. A plat boundary is located and intersected with...
Arsenic plumes traced from site sampling maps by Golder, in Response Action Plan, Revision 5. RCRA Part B Renewal Application Compliance Plan. Attachment XI.D. August 31, 2020. PDF p. 156-157. Accessed from "Information on Houston Wood Preserving Works Site and Area Cancer Cluste…
Arsenic plumes traced from site sampling maps by Golder, in Response Action Plan, Revision 5. RCRA Part B Renewal Application Compliance Plan. Attachment XI.D. August 31, 2020. PDF p. 156-157. Accessed from "Information on Houston Wood Preserving Works Site and Area Cancer Cluste…
Polygon traced from "Atachment 2A-2 Response Action Design Groundwater," prepared November 2015 by Pastor, Behling & Wheeler LLC for Union Pacific Railroad Co.
This dataset contains all the facilities reported by each Precinct for publication of public Precinct/County maps. EDIT: FEB3, 2022 EDIT: December 9, 2021 for redistricting and updating EDIT: MAY 23, 2014
Hub keywords: CIP;Capital Projects;Police
[City of Houston] This dataset provides data related to the population of the City.
NOV 1, 2021 Precinct revisions to reflect new redistricting changes in Commissioners Precincts. Some questions remain and further updates will be made. (Mercer in question at time of publish) SEP 08, 2021 Change Dixie Farm Road Park to Juneteenth Park per PCT1 request. JUL 2021 …
Current, court approved, official commissioner precincts for Harris County TX
Current, court approved, official commissioner precincts for Harris County TX
Current, court approved, official commissioner precincts for Harris County TX With All Cities in Harris County Removed
Current, court approved, official commissioner precincts for Harris County TX
Current, court approved, boundary for Precinct One. This Precinct boundary represents the extent of OCRE's purview, though jurisdiction, and responsibilities, will vary depending on whether the area is unincorporated.
Harris County Precinct Boundaries
Current, court approved, boundary for Precinct One. This Precinct boundary represents the extent of OCRE's purview, though jurisdiction, and responsibilities, will vary depending on whether the area is unincorporated.
Harris County Commissioner Precinct Boundary
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.