Houston Open Data Explorer

Houston Open Data Catalog

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.

7,221datasets and layers found
17portals and publishers
153loaded and joinable in the explorer
Where the data lives (17 sources)
SourceWhat it isItemsLoaded
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. 3,11216
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. 2,8880
Houston Advanced Research Center (HARC) ArcGIS Online
services2.arcgis.com
Environmental and regional research layers; source of the 2021 city cool-center list. 5281
City of Houston GIS (ArcGIS Hubs)
geohub.houstontx.gov
Two Hub sites (Public Works geohub, citywide mycity) over several ArcGIS servers. Official. 314119
Harris County Flood Control District ArcGIS Online
services2.arcgis.com
High-water marks, floodplains, projects, acreage by program. Source of the storm HWM layers. 2654
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. 940
U.S. Census Bureau
api.census.gov
43
FEMA (OpenFEMA and National Flood Hazard Layer)
www.fema.gov
43
U.S. Environmental Protection Agency
data.epa.gov
22
Centers for Disease Control and Prevention
data.cdc.gov
22
Texas Commission on Environmental Quality
www.tceq.texas.gov
21
Texas Water Development Board
www.twdb.texas.gov
11
U.S. Geological Survey water data
waterservices.usgs.gov
10
City of Houston 311 public data extracts
www.houstontx.gov
11
METRO (Harris County transit)
www.ridemetro.org
10
Stanford Open Policing Project
openpolicing.stanford.edu
10
TxDOT Crash Records Information System (CRIS)
cris.dot.state.tx.us
10

200 matches (likely staff working copies and non-Houston research layers hidden)

Not loaded

Houston Crash Rates

Rice University ArcGIS Online · layer · polygon

Crash Rates with null data

Rice University ArcGIS Online · layer · polygon

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…

Rice University ArcGIS Online · layer · polygon

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…

Rice University ArcGIS Online · layer · polyline

U.S. Major Highways provides highways and major roads for national, state, and regional display.

Not loaded

Houston Oil

Rice University ArcGIS Online · layer · point

houston oil buildings

Not loaded

Houston Wards

Rice University ArcGIS Online · layer · polygon
Rice University ArcGIS Online · layer · point

Using TCEQ Air emission database from 2015 to 2025, the geographical coordinates of the location of top 60 incidents by duration has been plotted.

Not loaded

Kashmere Gardens

Rice University ArcGIS Online · layer · polygon

Kashmere Gardens Super Neighborhood Boundary

Not loaded

Metro Bus Stop

Rice University ArcGIS Online · layer · point
Rice University ArcGIS Online · layer · polyline

Metro Train Routes near Rice to ravel to Rice from apartments around Houston

Rice University ArcGIS Online · layer · polygon

Houston flooding by Michaela Haet

Rice University ArcGIS Online · layer · polygon

Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University

Rice University ArcGIS Online · layer · polygon

Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University

Rice University ArcGIS Online · layer · polygon

Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University

Rice University ArcGIS Online · layer · polygon

Town & Gown Partnerships: Mound Bayou, MS and Mississippi Valley State University

Not loaded

NA Household Income

Rice University ArcGIS Online · layer · polygon

US, CA 2020 median household income; MEX 2020 average household income https://en.www.inegi.org.mx/investigacion/icmm/#open_data

Not loaded

NYT Harris

Rice University ArcGIS Online · layer · point

Add a dataset

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.