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

2,869 matches (likely staff working copies and non-Houston research layers hidden)

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Centauri Location

Harris County ArcGIS Online · layer · point

Centauri Location

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CEQ CEJScreen Tool

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

The Climate and Economic Justice Screening Tool provides important information by identifying communities that experience high burdens. These communities are considered disadvantaged. This information will be used for the Justice40 Initiative. The current version of the tool is 1…

Harris County ArcGIS Online · layer · polygon

2/5/24 Harris County Parks per precinct as specified by precinct contacts. Attribute data is best information available at time of publishing. Schema change and cleanup for use with cartegraph.

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Channels By Gauge

Harris County Flood Control District ArcGIS Online · layer · polyline
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Child Carep4

Harris County ArcGIS Online · layer · point
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Churches

Harris County ArcGIS Online · layer · point
Harris County ArcGIS Online · layer · polygon

Government Boundaries dataset include Houston City Limit boundary,City Council Districts, MUDs, Super Neighborhoods, Tax Incentive Reinvestment Zones (TIRZ), School Distircts, Lambert Grid, and zipcode.

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City Dates

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2026-06-26 · CSV

[City of Houston] This date table captures calendar dates since 2014, flagged by fiscal periods, city holidays, and business days. It is updated as new city holidays are approved to ensure accuracy and consistency over time.

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cityHouston

Rice University ArcGIS Online · layer · polygon
Harris County Flood Control District ArcGIS Online · layer · polygon

HCFCD City Limit Boundaries

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City Limits

Harris County ArcGIS Online · layer · polygon

GIS data files downloaded from HCAD (http://pdata.hcad.org) 7/24/2026.

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City Limits

Harris County Flood Control District ArcGIS Online · FeatureServer
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City Limits Fill

City of Houston GIS (ArcGIS Hubs) · layer · polygon · 2 records
Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

City of Conroe City Limits.

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City of Conroe ETJ

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

City of Conroe ETJ.

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City of Houston

Harris County ArcGIS Online · layer · polygon

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

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS

[Legacy Portal] Per City Ordinance, Sec. 26-372(e), any establishment wishing to use the public streets for valet pick-up/drop-off of vehicles must do so in a valet zone that is designated by...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS

[Legacy Portal] Commercial Vehicles that wish to use commercial loading zones or commercial vehicles that wish to use metered parking without payment need to be permitted with the City. See...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS

[Legacy Portal] Companies that wish to provide valet services must be registered with the City. See http://www.houstontx.gov/parking/valet.htm to learn more. See also for a related dataset:...

Harris County ArcGIS Online · layer · polygon

This feature class was digitized from legal descriptions by the City of Houston Planning and Development Department, GIS Services Division. The legal descriptions originate from the Planning and Development Department Public Policy Division; their legality is established with the…

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2026-05-07 · XLS

[Planning and Development] The American Community Survey (ACS) 1-Year and 5‑Year estimates for Houston, TX provides data on the average household size by renter and owner-occupied households. The ACS 5-Year estimates are based on surveys collected over a five-year period, which p…

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLSX

[Department of Neighborhoods] The Department of Neighborhoods Inspections & Public Service (IPS) enforces Chapter 10 of the City of Houston Code of Ordinances. Violations under this section include:...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS

[City of Houston] A listing of the Business Areas (for accounting and budget purposes) recognized by the City of Houston. Business Areas usually overlap with the department of the same name - but...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · CSV,DOCX,XLSX

[City Secretary's Office] Three campaign finance datasets are contained in this open data set. Candidates, officeholders, and special purpose committees for the City of Houston are required to self...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLSX

[Finance Department] The Capital Improvement Plan (CIP) is a forward looking document outlining the City of Houston's infrastructure improvement strategy. This plan organizes projects by priority,...

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

City of Houston City Limits.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

2012 council districtsthese districts were created from harris county voting tabulation districts which are based off census blocks. this data does not always meet existing boundaries of city limits and parcels.if you have questions about any particuar district please reference o…

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS,XLSX

[Finance Department] This dataset contains electricity chargebacks to all departments, by cost center, to all City Departments that pay for electricity through Revolving Fund 1002 (Central Service...

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City of Houston ETJ

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

City of Houston ETJ.

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-30 · ZIP

[General Services Department] City of Houston facilities as maintained by the General Services Department. This dataset comes from William Whitehead

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS,XLSX

[Legacy Portal] This is the master list of the fees charged by the City of Houston for various services, licenses, permits, and other misc. items. Please be sure to visit the fee schedule app...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS,XLSX

[Finance Department] This dataset includes various resources related to the City of Houston's approved budgets for multiple fiscal years. Please read the resource information for additional...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS,XLSX

[Finance Department] Listing of Fund Centers used by the City of Houston. Fund Centers are used for budgeting and are groups inside of a business area (sometimes they overlap with personnel...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLS,XLSX

[Finance Department] A Listing of City of Houston Funds, along with their fund type and financial use. For most information about fund accounting, check out Wikipedia:...

City of Houston Open Data (data.houstontx.gov) · dataset · updated 2023-06-09 · XLSX

[Houston Health Department] List of individual inspections carried out by the City of Houston Health and Human Services Department's Consumer Health Division at facilities that serve food. A restaurant or...

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.