Houston Open Data Explorer

Sample questions

Houston's open data is published by the City, the County, the Flood Control District, universities and federal agencies, each in its own portal. These questions only work once it all sits in one place: each one says which publishers it joins. Click one to ask it, or use it as a starting point for your own.

Only possible in one place

Each of these joins data from three to five different publishers that never share a portal.

Discover what exists

The catalog tracks thousands of public datasets across Houston-area portals, loaded or not. Ask what's out there.

Neighborhoods at a glance

Put any neighborhood in context — people, services, risks.

Flooding & drainage

Four storms of high-water marks, FEMA flood zones and claims, 5.6M 311 calls, 130k storm drains.

Public safety

1.26M HPD offense records 2020–2024, structural fires 2015–2021, stations and beats.

311 & city services

Every 311 request since 2011 — what people report, where, and how fast the city responds.

Streets, traffic & transit

Vision Zero injury network, pavement ratings, speed limits, traffic calming, METRO.

Health, heat & vulnerability

CDC PLACES health estimates, the Social Vulnerability Index, cooling centers.

Air quality, environment & industry

County air sensors, EPA toxic releases, concrete batch plants, 11,000 resident air complaints, and health data.

Investment, policy & development

TIRZs, Hope Areas, Complete Communities, Opportunity Zones, LARA lots, plats and permits.

Parks, schools & culture

Parks, schools, libraries, museums, historic districts.

Cross-cutting "wow" questions

Questions that join five or more datasets at once.