Madison Municipal Open Data Request Guide

Technology and Data Wisconsin 3 Minutes Read · published February 09, 2026 Flag of Wisconsin

Madison, Wisconsin maintains an open data program to publish municipal datasets and APIs for public use. This guide explains how residents, researchers, journalists, and businesses can request datasets or API access from the City of Madison, what offices handle requests, typical timelines and fees if any, enforcement and appeals, and where to find official data and contact points. Follow the steps below to request data formally, report problems, or request special access or bulk exports.

Penalties & Enforcement

The City of Madison does not publish fines or penalty schedules for open data requests on its public portal; specific monetary penalties or fee caps are not specified on the cited page.[1] Enforcement of access and correct publication is coordinated between the City Clerk (public records function) and the Information Technology / Open Data program, which can investigate failures to publish or improper withholding.

  • Fines or fee caps: not specified on the cited page.
  • Escalation: first or repeat offenses and continuing violations are not specified on the cited page.
  • Non-monetary remedies: administrative orders to publish, court action under state public records law, and records production orders are the usual remedies; specific local procedures are not detailed on the cited page.
  • Enforcers and contacts: City Clerk (public records) and the City IT / Open Data program handle requests and compliance investigations.
  • Appeals and review: judicial review under Wisconsin public records law or administrative review; specific time limits for local appeal or review are not specified on the cited page.
If you believe data has been wrongfully withheld, start by submitting a public records request to the City Clerk and document dates.

Applications & Forms

For routine open data downloads and API keys, use the City of Madison open data portal and published dataset pages. For formal public records or bulk extracts not offered on the portal, submit a public records request to the City Clerk. A named or numbered "public records request" form is not specified on the cited portal page; consult the City Clerk for any downloadable form or submission template.

How to Request Data

  1. Search the City of Madison open data portal for the dataset or API endpoint you need and review metadata and license terms.[1]
  2. If the dataset or API is published, use the portal's download or API link to retrieve data or request an API key where offered.
  3. If the dataset is not available or you need a custom export, submit a written public records request to the City Clerk specifying the dataset, date range, format, and preferred delivery method.
  4. If you encounter technical issues or need API access for automated workflows, contact the City IT / Open Data program to request assistance or an API credential.
  5. If access is denied, ask the City for the legal basis for denial and the appeal route; preserve all correspondence and consider judicial review under state public records law if necessary.
Document every request and note response deadlines to preserve appeal rights.

Common Violations

  • Failure to publish required datasets or metadata when promised.
  • Unjustified withholding of records responsive to a public records request.
  • Improper or excessive invoicing for routine digital copies or published data.

FAQ

How do I find if a dataset already exists?
Search the City of Madison open data portal for dataset names, tags, or departments and review dataset metadata for update cadence and access methods.[1]
Do I need to pay for API access?
Publication-level API access is generally provided through the portal; any fees for special extracts or staff time are not specified on the cited page and may require a records request or invoice from the City Clerk or department.
How long does a request take?
Typical portal downloads are immediate; formal public records request timelines and any statutory deadlines are not specified on the cited portal page—consult the City Clerk for timing and fees.

How-To

  1. Identify the dataset on the open data portal and check metadata and API docs.[1]
  2. Use the portal's download or API endpoint for direct access, or note the dataset owner department for questions.
  3. For unpublished or large bulk requests, prepare and submit a public records request to the City Clerk specifying format and delivery method.
  4. If denied, request a written explanation and follow appeal instructions provided by the City; preserve all correspondence.

Key Takeaways

  • Check the City of Madison open data portal first for ready-made datasets and APIs.
  • Use a formal public records request for unpublished or custom bulk exports.
  • Contact City Clerk and the IT/Open Data program for assistance, appeals, and technical support.

Help and Support / Resources

  1. [1] City of Madison Open Data Portal

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