Texas A&M GeoServices Geocoding API
Free geocoding, address normalisation and standardisation, census intersection and reverse geocoding from Texas A&M GeoServices. Version 5.0.0 returns up to 172 output fields; an API key from a free self-service account profile is required on every request and travels as a query parameter. Institution-operated: geoservices.tamu.edu is under Texas A&M's own registrable domain and the service is the university's own research product, not a platform vendor's. Verified live 2026-09-01 — an anonymous call returns HTTP 200 carrying queryStatusCode APIKeyMissing, which confirms both the parameter contract and the auth model.
Texas A&M GeoServices Geocoding API is one of 13 APIs that Texas A&M University publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Geocoding, Geospatial, Address, and GIS. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.
This API exposes 1 operation across 1 path, and defines 2 schemas. It is described by OpenAPI 3.2.0, at version 5.0.0.
Requests are made against a single base URL, https://geoservices.tamu.edu/Api/Geocode/V5.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Texas A&M GeoServices Geocoding API declares
1 security scheme
for authenticating requests.
An API key is passed in the query as apiKey (apiKeyQuery).
apiKeyQuery— Free API key issued from the GeoServices account profile at https://geoservices.tamu.edu/Signup/. Sent as a query parameter; there is no header form.
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 GET. Each is listed below with its method, path, parameters, and response codes.
Address to coordinate resolution with optional census intersection.
Schemas 2
The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are GeocodeResult (8 properties), GeocodeEnvelope (4 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Texas A&M University 12
Other APIs Texas A&M University publishes across the network.
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