​​Welcome to the City of Ann Arbor's Data Catalog website.  This site is part of our ongoing commitment to enhance citizen participation and local government transparency.  We are pleased to make City datasets freely available to the public in machine-readable formats.

We expect the Data Catalog site to grow over time as we add additional datasets.  By downloading the data, you are agreeing to the Policies and Notices.  When creating these datasets the City has been careful to respect privacy and security concerns.

Washtenaw County has now created it's own GIS Data Portal for the community to use when looking for County spatial datasets and web mapping applications.

For questions or comments concerning the City of Ann Arbor Data Catalog please contact the City's IT Director at 734.794.6550.

If you have suggestions for new datasets or enhancements to existing datasets please send your request to DataCatalog@A2gov.org.

Ag​ency/Unit	Metadata	CSV	PDF	DOC	RSS/ GeoRSS	KML/ KMZ	SHP	Map
AAGIS	​AATA Bus Stops	​	​	​	​			​
AAGIS	Building Footprints
AAGIS	​Catch Basins	​	​	​	​			​
AAGIS	City Boundary
AAGIS	City Owned Land
AAGIS	DDA Boundary
AAGIS	Floodplain
AAGIS	Floodway
AAGIS	Future LandUse
​AAGIS	​Greenbelt Boundary	​	​	​	​	​	​	​
AAGIS	Greenbelt Properties
AAGIS	Historic Districts
AAGIS	Hydrants​	​	​	​	​			​
​AAGIS	​LandUse	​	​	​	​	​	​	​
AAGIS	Neighborhoods		​	​				​
AAGIS	Non City Open Spaces
AAGIS	Parks
AAGIS	Polling Locations
AAGIS	Schools
​AAGIS	Streetlights	​	​	​	​			​
AAGIS	Trees
AAGIS	University
AAGIS	Wards and Precincts
AAGIS	Watershed/Creekshed
AAGIS	Zoning Districts
City Clerk	City Clerk Permits
Communications Office	Public Meetings and City Events Calendar
Finance and Administrative Services	Budget Worksheet - Expenses
Finance and Administrative Services	Budget Worksheet - Revenues
Finance and Administrative Services	Invoice Aging Report
Finance and Administrative Services	City of Ann Arbor Monthly Investment Report
Finance and Administrative Services	Expense Budget Performance Report
Finance and Administrative Services	Employer's Quarterly Federal Tax Return
Finance and Administrative Services	Monthly Financial Council Report
Finance and Administrative Services​​	Purchase Card Transactions - Please see A2 Open Book
Finance and Administrative Services	Open Purchase Orders
Finance and Administrative Services	Revenue Budget Performance Report
Finance and Administrative Services	Trial Balance by Fund
Finance and Administrative Services	YTD Check Register - Please see A2 Open Book
Planning and Development Services	Construction Permits
Planning and Development Services	Petitions Under Review							Bing
Planning and Development Services	Planning and Development Projects
​Police Department	Part A&B Case Offense Information	Group A/B Crime Past365days		​Calls for Service Past365days	​	​	​	​

 CSV - File format that is used by spreadsheet, database, and statistical applications.

 PDF - Portable Document Format intended for sharing documents while maintaining a document's integrity.

 DOC - Microsoft word processing file format.
​
 RSS/GeoRSS - Web feed format used to publish frequently updated works in a standardized format.  GeoRSS extends the RSS standard and is used for encoding location as part of a web feed.

KML/KMZ - Keyhole Markup Language is an XML-based language schema for displaying geographic annotation.

SHP - Geospatial vector shape file data format for geographic information systems software. ​