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)
Hobbs Galveston Connection
Line showing Alexander Hobbs' Galveston Connection
Homicides in Harris County, TX documented for the years 2016 through 2020
The following data include COVID -19 Hospital rates with Harris County
Harris County Public Health COVID-19 Threat Level Indicators. All data are provisional and subject to change. Data will be updated once a day at 4pm.
Hospital locations.
GSP
Hub keywords: Houston;Acres;Home;Mobility;Study;area;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;airport tiers;has;efd;iah;hou;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;airspace boundaries;all airports;has;efd;iah;hou;transportation;infrastructure;City of Houston;Texas
Hub keywords: DIR;Landbase and Roads;Alleys
Hub keywords: Houston;existing programmed hc;bikeway;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;proposed hc;bikeway;transportation;infrastructure;City of Houston;Texas
U.S. Census Block Groups provides boundaries and demographic information for the U.S. Census block groups within the United States. The boundaries are consistent with the tract, county, and state data sets.
[Legacy Portal] Data feeds to the City Council Chamber Calendars, including the City Hall Chamber and the City Hall Annex Chamber. These calendars are maintained by the City Secretary's Office.
Houston City Limits
Hub keywords: Civility Ordinance;Houston;civility;ordinance;boundary;hpd;public safety;City of Houston;Texas;safety
Crash Rates with null data
These data layers were originally digitized by the City of Houston Planning and Development Department, GIS Services Division from United States Geographic Survey 1:24000 quad sheets. It was created in 1985, and updated in 1989 using a calculated distance from the city limit lin…
STATIC EXPORT - ACCURATE AS OF 04-28-2015 The Fire Atom feature class was created to provide HEC911 direct information for the response orders of each station to any location in the City of Houston. There are currently 94 fire stations. The HFD FireAtom feature class is compos…
The HFD FireAtom feature class is composed of more than 4600 fire atom polygons which are defined by a running schedule. Each atom consists of all the intersections, within the City of Houston, with identical running schedules for the first six response stations. This information…
Hub keywords: Houston;green corridor;planning;p&d;City of Houston;Texas;Planning;development;planning and development
Hub keywords: Houston;heritage distrcits;planning;p&d;Planning;development;planning and development;City of Houston;Texas
U.S. Major Highways provides highways and major roads for national, state, and regional display.
[Legacy Portal] Houston Hope is an initiative to reinvest Houston's established neighborhoods. The goal of Project Houston Hope is to build strong communities that meet the needs of current...
Hub keywords: Houston;market based;parking;planning;p&d;Planning;development;planning and development;City of Houston;Texas
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.