The Ontario.ca homepage publishes Service Ontario locations, as of 2015. Select English, and then click Government under the Topics heading. Click Services for Residents, and then scroll down to click the Find a Location link, which leads to the Service Location Finder.
On the Service Location Finder page, use the Visit a Centre link under the Quick Search heading to quickly see a map of nearby Service Ontario locations using a specific postal code. Not all service locations offer all services. To find specific Province of Ontario services click the Browse by Services link under the Quick Search heading, or use the search bar at the bottom of the Service Location Finder page.