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)
HCSO Patrol sectors created by dissolving CADTi boundary data by jurisdiction and calculating district and district number. Harris County cities are included in data
Unincorporated area throughout Precinct One pulled from overall unincorporated area throughout Harris County.
GIS data files downloaded from HCAD (from http://pdata.hcad.org) 3/2/2015. GIS county data is updated quarterly by HCAD GIS personnel and uploaded to repository. The last HCAD update Mar 20 next update Jan 2024
Unincorporated Harris County Layer
Population estimates for Harris County estimates for 2017-2019 and the Decennial Census to calculate the 2020 Census population estimate.
Calculated x, y, latitude and longitude values generated from USA Zip Code Points from the ESRI ArcGIS Online feature service USA ZIP Code Points
ACS electricity bill ranges and estimates, from ACS 2021 5-Year Estimate.
ACS solar use for heating, from ACS 2021 5-Year Estimate.
US Census Tracts with 5-Year ACS (American Community Survey) summary statistics.
U.S. Census Bureau Metropolitan and Micropolitan Statistical Areas, also termed Core Based Statistical Areas (CBSAs).
CONGRESSIONAL DISTRICTS enacted by 87th Legislature, 3rd Called Session - PLANC2193
This layer was created by geocoding Universal Services Facility spreadsheet. It should have some overlay with Critical Infrastructure but as of this writing not sure exaclty where. It is related to a table called IP that has the IP addresses of each location.
This layer was created by geocoding Universal Services Facility spreadsheet. It should have some overlay with Critical Infrastructure but as of this writing not sure exaclty where. It is related to a table called IP that has the IP addresses of each location.
The Food Access Research Atlas presents an overview of food access indicators for low-income and other census tracts using different measures of supermarket...
USFWS birds colony and species data.
USFWS birds colony and species data.
USGS water level data in Chicot 1977-2017.
USGS water level data in Chicot 2012-2017.
USGS water level change contours in Evangeline 1977-2017.
USGS water level change contours in Evangeline 2012-2017.
The Site Inventory System contains and provides access to inventory information about sites at stream reaches, wells, test holes, springs, tunnels, drains, lakes, reservoirs, ponds, excavations, and water-use facilities.
USGS water level change contours in Jasper 2012-2017.
Drifter path in Lake Livingston.
Water Quality and Nutrients data in Lake Livingston. Sampled by USGS.
USGS subsidence contours 1906-2016.
This dataset contains compaction values of subsurface sediments in the Chicot and Evangeline aquifers.
This dataset contains compaction values of subsurface sediments in the Chicot and Evangeline aquifers.
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.