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Data & Mapping

Serving as a trusted source of resources and information


The open data portal is a free resource for locating, viewing, and downloading geospatial data developed by CARPC. All vector datasets are automatically available for download as CSV, KML, and Shapefiles and accessible via the GeoJSON and GeoService APIs. Currently available datasets include Environmental Corridor Boundaries, Sewer Service Area Boundaries, and Groundwater Nitrates in Dane County.

Data Policy: Public datasets made available on the open data portal are provided for informational purposes. For details, please review the terms of use.


A monthly roundup of planning news and development projects from around the region, as featured in our newsletter.

Development Tracker updated monthly


Housing Construction & Building Permits

Annual Building Permits Dashboard updated July 2021

Monthly Building Permits Dashboard updated July 2021

Rental Vacancy Rates

Monthly Rental Vacancy Rate Dashboard updated July 2021

Workforce Housing Location & Affordability

Dane County is unaffordable to a large proportion of its workforce, and many residents cannot afford housing near where they work. Our workforce housing data story looks at the affordability of housing in and around Dane County for the county’s low-wage workforce. 

Workforce Housing Affordability Report October 2019

Contact Sean Higgins at seanh@capitalarearpc.org or 608-474-6018 for additional data requests that cannot be met with online information.