What is MPROP?
MPROP is the City of Milwaukee Master Property Record. It contains the information found in Map Milwaukee applications, a great place to look for current property information. If you want to query for large numbers of records in a GIS context the City provides both data and shapefile download sites. MPROP Pal is designed to help GIS users find and utilize the data they need.
What is MAI?
MAI is the City of Milwaukee Master Address Index. It is a table containing a record for every address (most addresses) in the City. Since there may be multiple addresses for a single parcel, it has far more records than MPROP, but fewer fields. It does include land use for every address, a finer gradation than the land use attribute in MPROP. It also includes MAIL_STATUS, which has information about "no mail" conditions. See documentation below.
Why MPROP Tools?
MPROP Tools are a set of ArcMap Toolbox Tools customized to import the City XML and ASCII formats directly into dBASE files using column formats found in MPROP Documentation and MAI Documentation and similar to historical MPROP files. The dBASE files created with these tools use significantly less file space than those created using a work around like conversion to a text file or from Excel to Access mdb.
Why an MAI Locator?
The MAI is great for generating mailing lists based on taxkey, but it would be even better to be able to automatically geocode (give X and Y coordinates to) a list of City of Milwaukee addresses. This locator uses the MAI to do exactly this task.
Sources for Everyone
MPROP Data for Use in GIS Applications--Format Conforms to MPROP Documentation:
Download MPROP as dBASE or Shape File--Updated occasionally.
Current MPROP and MAI data may be downloaded (ASCII or XML or MS Excel format) from the Map Milwaukee Download Tabular Data website:
Historical Parcel Shapefiles with Joined MPROP data (May 2015) on MPROP Pal
Sources for UWM Researchers
The Milwaukee Master Property File (MPROP) may be obtained from the American Geographical Society Library Geospatial Data