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 |
1,550 matches (likely staff working copies and non-Houston research layers hidden)
p2
Harris County facilities.
Official Commissioner's Precinct Boundaries based on Ellis3 shapefile example Updated to reflect election results - 1/1/23
Harris County commissioner precinct 2 community centers developed from a subset of facilities data
Harris County courthouse annexes for Commissioner precinct 2.
Pct 2 Community CRD Areas
create date= 12-2-2008 Updated with additional information 1/14/19 produced from FPM and HRRM county facilities data for the purpose of isolating Justice of...
p2
**** Work In Progress Version to Edit **** 2/4/20 Points for Harris County Parks
PCT2 2020 Projects
5/27/2021
Harris County facilities.
Harris County facilities.
Facilities located within the boundaries of Harris County commissioner boundaries. Updates and removals from 2020 version.
Facilities located within the boundaries of Harris County commissioner boundaries. Updates and removals from 2020 version.
Facilities located within the boundaries of Harris County commissioner boundaries. Updates and removals from 2020 version.
Facilities located within the boundaries of Harris County commissioner boundaries. Updates and removals from 2020 version.
Facilities located within the boundaries of Harris County commissioner boundaries. Updates and removals from 2020 version.
Facilities located within the boundaries of Harris County commissioner boundaries. Updates and removals from 2020 version.
create date= 12-2-2008 Updated with additional information 1/14/15 produced 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
Harris County facilities.
p2
Updated as of April 30, 2018, provided May 1, 2018 for distribution. Updates are ongoing as Precincts are continuing to make changes. Points/Centroids createdf from Harris County Parks on May1st to replace older file 'Parks_Points', including reported partnership parks with ce…
Pct 3 - Park To be Relinquished
Pct4 Cities/Incorporated Areas
p2
Pct4 Maintenance Area Boundaries
Pct4 Maint Lines
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.