Not loaded
Precinct One Boundary
Current, court approved, official commissioner precincts for Harris County TX
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)
Current, court approved, official commissioner precincts for Harris County TX
Harris County facilities.
Harris County Road Log for cataloging managed and unmanaged road segments.
This dataset contains all the facilities reported by each Precinct for publication of public Precinct/County maps. EDIT: December 9, 2021 for redistricting and updating EDIT: MAY 23, 2014
Harris County Precinct boundaries from 2010 2021.
Harris County Precinct Boundaries voted on October 28, 2021. This selected option is Ellis Version 3.
Current, court approved, official commissioner precincts for Harris County TX
[Legacy Portal] The project's objective would be to develop an online solution that can quickly and effectively handle the Alcohol permit renewal process online. Key features should include:...
[Legacy Portal] This dataset contains a summary of the projected increment for the City of Houston Tax Increment Reinvestment zones for FY2013. This projection is from 04-30-2012. Included is...
[Houston Information Technology Services] Presentation by Bruce Haupt on May 14, 2013 to the NetSquared Houston organization. Includes additional project ideas (snapshots) and links to projects from other Cities.
[Legacy Portal] The City Transportation Regulation Section could significantly improve their overall processes and responsiveness to customers if an online process could be leveraged to make...
[Finance Department] General property taxes are ad valorem taxes levied on the assessed valuation of real and personal property. Taxable values for all real and personal property within the City, depending on their locations, are established by the Harris County Appraisal Distric…
Merged layer of proposed BS2N Projects for 2023
Feature layer generated from running the Merge Layers analysis tool.
Combined USGS PAD-US geodatabase and TPWD LWRCRP property for H2B Riparian Corridors project.
[Legacy Portal] Listing of all public art on display in the City of Houston.
Parcel polygon is the delineation of the property boundary. Extracted state class code X1 accounts from HCAD Parcel dataset as of 7/30/26
Harris County Public Library branch locations
Water utility facility lines as submitted to the PUCT. Updated 10/2020.
Water utility boundaries and facility lines as submitted to the PUCT. Updated 10/2020.
This feature layer depicts Public Use Microdata Sample (PUMS) data for 2017.
Harris County Quadrant Boundaries
Harris County Quadrant Boundaries
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.