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 Public Health COVID-19 Data Hub. All data are provisional and subject to change. Data will be updated once a day at 4pm.
Harris County Public Health COVID-19 Data Hub. All data are provisional and subject to change. Data will be updated once a day at 4pm.
Harris County Public Health COVID-19 case summary by zip code. All data are provisional and subject to change. Data will be updated once a day at 4pm.
Texas Harris County COVID19 Public Map
Texas Harris County COVID19 Public Map
Harris County Public Health
Harris County Public Health
Harris County Public Health
County boundary used by Harris County ITC-GIS divided into quadrants by Harris County Public Health - Office of Science, Surveillance, and Technology.
HCSO Patrol sectors that are groups of the Beats
HCTRA detention ponds that are inspected during the annual HCTRA System Inspection. Updated annually or as needed (last updated in April 2022).
This is a layer of address points from the HC Universal services Computer aided Dispatch system that is managed by Public Safety GIS team.
Vehicle Maintenance Locations in Harris County.
This Voting Precinct (polygon) dataset created to represented and validate representative jurisdictions within Harris County Texas.
This Voting Precinct (polygon) dataset created to represented and validate representative jurisdictions within Harris County Texas.
Feature layer generated from running the Find by Attributes and Location analysis tool.
Line connecting points on Heartsill's journey to Camp Wood
Shows all locations visited during Heartsill's Trip to Camp Wood
2020 Census, Census Blocks in Texas. A "key" field has been added so data formatted or published by the council can be joined to the shapefile. Additional fields support labeling and cartography in Texas Legislative Council applications.
Additional analysis on the CAPA heat data with the For Us tree study area by Census tract.
Summarized the CAPA temperature mean, max, and min values in Houston and Harris 2020 Campaign areas.
CAPA humidity traverse points afternoon in Houston and Harris County Campaign areas.
CAPA humidity traverse points morning in Houston and Harris County Campaign areas.
CAPA humidity traverse points evening in Houston and Harris County Campaign areas.
CAPA temperature traverse points afternoon in Houston and Harris County Campaign areas.
CAPA temperature traverse points morning in Houston and Harris County Campaign areas.
CAPA temperature traverse points evening in Houston and Harris County Campaign areas.
CAPA traverse points afternoon in Houston and Harris County Campaign areas.
CAPA traverse points afternoon in Houston and Harris County Campaign areas. Clipped with For Us Tree DACs.
CAPA traverse points morning in Houston and Harris County Campaign areas.
CAPA traverse points morning in Houston and Harris County Campaign areas.
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.