Department of Administrative Services

Land Information Office

Providing Property Information, GIS Data and Mapping Applications

The Milwaukee County Land Information Office (MCLIO) is organized within the County’s Department of Administrative Services – Facilities Management Division. The MCLIO provides several key services to state, federal, county and municipal government, citizens and the geospatial professional community. These services include:

  • Administration of the Milwaukee County Land Information Council Program
  • Maintenance of the geospatial data portal, to make data easily accessible to the public
  • Coordination of county efforts with state, federal and local geospatial professional communities
  • Development and maintenance of geospatial architecture (databases and servers)
  • Maintenance of basemap reference data including cadastral, topographic, planimetric and imagery
  • Development of the application of Location Based Data and Technologies (LBDT)
  • Maintenance of the County’s street centerline and street address databases

Featured Applications

Interactive Mapping App

Use to view MCLIO's various GIS datasets.

Open Application

NEW Interactive Mapping App

New beta version of the MCLIO interactive mapping application.

Open Application

Plat of Survey Search

Use to quickly retrieve Plat of Survey maps.

Open Application

GIS Data

GIS Service Endpoints

Use to view any public GIS services that the MCLIO offers.

Open Application

Data Download App

Topographic, planimetric and cadastral CAD and GDB data.

Open Application

Open Data Portal

Variety of GIS data available in Shapefile, KML or spreadsheets.

Open Application

633 W. Wisconsin Ave., Suite 903, Milwaukee, WI 53203

Contact Us

Please wait while we gather your results.


2020 Aerial Imagery

Milwaukee County has completed the processing of the 2020 ortho imagery and it is now available. The material is available in many formats to help fit your needs so please enjoy the new data.


Cadastral Data Update

The cadastral data has been published as of January 1, 2020, the cadastral information will be updated and published every 2 months.


GIS Services Alert!



Milwaukee County Courthouse
901 N. 9th St., Room 308
Milwaukee, WI 53233

(414) 278-5353 (Voice), 711 (TRS)

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