Open up the Road Information Tool online map. There will be an initial disclaimer page and then the application will open. The default layer displays all County roadways.
In the left side layers listing, you will need to check the box for Municipal Annexations, which will turn on the shapes showing the city limits. After the layer is visible, you may zoom in/out and pan around to locate areas you need.
If you open up the menu tree of the Municipal Annexations, you can view a colored legend for the cities. If you click on the map, a small dialog box will pop up allowing you see more information about the parcel selected.