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)
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides data on the number of housing units and their occupancy and tenure characteristics. The ACS 5-Year estimates are based on surveys collected over a five-year period,…
Management district boundaries of Houston.
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides median gross rent. The ACS 5-Year estimates are based on surveys collected over a five-year period, which produces more reliable statistics for smaller towns and ne…
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides median household income and median housing value. The ACS 5-Year estimates are based on surveys collected over a five-year period, which produces more reliable stat…
[Finance Department] Dataset presents the original and current budget, and actual activity. Last update 5/31/2017, but plans to resume updates coming soon.
[Legacy Portal] Parking citations issued by the City of Houston's Parking Management Divsion. See resources for more information and details.
This data was obtained from the City of Houston Department of Health. This data is relavent as of 2014.
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides a detailed breakdown of the city’s residents by age, including groups such as under 5, 5–9, up to 85 and over. The ACS 5-Year estimates are based on surveys collect…
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides a detailed breakdown of the city’s population of ages 25 and older by level of education attainment. The ACS 5-Year estimates are based on surveys collected over a …
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides a detailed breakdown of the city’s residents ages 16 and older by their employment status. The ACS 5-Year estimates are based on surveys collected over a five-year …
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides a detailed breakdown of the city’s residents aged 5 and older by language spoken at home. The ACS 5-Year estimates are based on surveys collected over a five-year p…
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides a detailed breakdown of the city’s working age population by means of transportation. The ACS 5-Year estimates are based on surveys collected over a five-year perio…
[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides a breakdown of the city’s residents by race and ethnicity, such as White, Black or African American, Asian, and Hispanic or Latino origin. The ACS 5-Year estimates …
[Legacy Portal] City of Houston Property Tax Rolls for various tax years. A tax year is the year in which a property is valued (i.e. January 1, 2013 = TY2013; it will be due for payment by...
Weatherization of Low-income homes data. The status field is whether they were weatherized or not.
[Legacy Portal] The Residential Energy Efficiency Program (REEP) provided income-qualified Houstonians the opportunity to receive the implementation of weatherization measures for their homes...
[Legacy Portal] Houston Residential Permit Parking Ordinance is intended to enhance the quality of life in neighborhoods experiencing chronic non-resident parking along their streets. It...
[General Services Department] City of Houston storage tanks as maintained by the General Services Department
This data layer is defined by the City of Houston Planning and Development Department and maintained by Neighborhood Planning Division.
City of Houston Super Neighborhoods boundaries.
Recycling and disposal sites operated by City of Houston Solid Waste Management Department.
City of Shenandoah City Limits.
City of Shenandoah ETJ.
GIS data files downloaded from HCAD (http://pdata.hcad.org) 7/29/24 GIS Parcel data is updated quarterly by HCAD GIS personnel and uploaded to repository. The last HCAD update was July 2024 next update April 2025
Hub keywords: HW;Wastewater
Mask for Clear Creek Watershed
Boundary of the Clear Creek watershed surrounding Harris County.
Regional Detention Basins for Clear Creek
Studied channels for Clear Creek watershed.
Points of interest within the Clear Creek watershed.
Facilities located within the boundaries of Harris County commissioner boundaries - 2020 version
Facilities located within the boundaries of Harris County commissioner boundaries - 2020 version
Facilities located within the boundaries of Harris County commissioner boundaries - 2020 version
Facilities located within the boundaries of Harris County commissioner boundaries - 2020 version
Facilities located within the boundaries of Harris County commissioner boundaries - 2020 version
Facilities located within the boundaries of Harris County commissioner boundaries - 2020 version
COC_Homeless_Housint_Facilities_HCnotCOH
COH_City_Limit
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.