In the explorer
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 |
279 matches (likely staff working copies and non-Houston research layers hidden)
Hub keywords: HPC;Billboards
Hub keywords: TDO;Bridges;Buildings and Structures
Hub keywords: Adopta
Hub keywords: HPC;Billboards
Hub keywords: Houston;hub;plat;tracker;application;type;planning;p&d
Hub keywords: Houston;hub;plat;tracker;final plats;planning;p&d
Hub keywords: Houston Bike Plan;Houston
Hub keywords: TDO;Stormwater
Hub keywords: Houston;harris county commissioner precincts;commissioner;precincts;government boundaries;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: Houston;Harris County voting precincts;voting;precincts;planning;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: Houston;parks;hgac park areas;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: schools;hisd;elementary;elementary school;neighborhood services;neighborhood;Neighborhoods;City of Houston;Houston;Texas
Hub keywords: Houston;schools;HISD;high school;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;schools;hisd;middle;middle school;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;after school programs;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;transportation;infrastructure;airport;airport noise contours;City of Houston;Texas
Hub keywords: Houston;airport;has;efd;iah;hou;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston Hope;Affordable;Housing;Affordable Housing;Down Payment Assistance;LARA;Land;Assemblage;Redevelopment;Authority;Houston;hope;homes;lara;available;properties;planning;p&d;Planning;development;planning and development;City of Houston;Texas
Hub keywords: Houston;existing lc;bikeway;transportation;infrastructure;City of Houston;Houston;Texas;transportation;infrastructure
Hub keywords: Houston;towers;planning;p&d;City of Houston;Texas;Planning;development;planning and development
Hub keywords: Houston;city limits;planning;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: deed restrictions;neighborhoods;neighborhood;civic clubs;civic club;HOAs;HOA;City of Houston;Houston;Texas;Planning;development;planning and development
Hub keywords: Houston;community centers;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;complete communities;planning;p&d;admin;administrative boundaries;boundaries;Planning;development;planning and development;City of Houston;Texas
Hub keywords: historic;conservation district;conservation;historic preservation;Houston;conservation districts;planning;p&d;City of Houston;Texas;Planning;development;planning and development
Hub keywords: Houston;council districts;planning;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: Houston;county boundaries;government boundaries;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: Houston;etj;SB2038;political boundaries;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: Fire Atoms;HFD;Running Schedules;Response Group;Boundary Atoms;Clones;Administrative Districts;Dispatch Groups;Houston;fire;district;hfd;public safety;City of Houston;Texas;safety
Hub keywords: Houston;fire;hydrants;hfd;public safety;City of Houston;Texas;safety
Hub keywords: Houston;fire;station;hfd;public safety;City of Houston;Texas;safety
Hub keywords: Houston;health department facilities;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;hosted;hub;historic districts;city of houston;planning;p&d;Planning;development;planning and development;City of Houston;Texas
Hub keywords: Houston;historic districts;national register;national;planning;p&d;City of Houston;Texas;Planning;development;planning and development
Hub keywords: Houston;historic sites;landmarks;planning;p&d;City of Houston;Texas;Planning;development;planning and development
Hub keywords: Houston;hospitals;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;hope;areas;planning;p&d;Planning;development;planning and development;City of Houston;Texas
Hub keywords: Houston;libraries;neighborhood services;neighborhood;Neighborhoods;City of Houston;Texas
Hub keywords: Houston;major activity center;planning;p&d;Planning;development;planning and development;City of Houston;Texas
Hub keywords: Houston;management districts;planning;government boundaries;administrative boundaries;Administrative boundary;admin;admin boundary;boundaries;administrative;boundary;City of Houston;Texas
Hub keywords: Houston;metro;bus;routes;transportation;infrastructure;City of Houston;Houston;Texas;transportation;infrastructure
Hub keywords: Houston;metro;bus;stops;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;metro;park;ride;locations;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;metro;planned;transit;corridors;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;metro;rail;line;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;metro;rail;stations;current;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;metro;transit;centers;transportation;infrastructure;City of Houston;Texas
Hub keywords: Houston;mtfp;transportation;planning;infrastructure;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.