From Hill Library:
If you're looking for a powerful online mapping tool, use PolicyMap to "capture data in visually powerful ways through custom maps, tables, and reports."
Users can create and save data maps for their area(s) of interest, including neighborhoods, zip codes, cities, states, and more. Users can also create tables to compare data across locations or to study data over time, or they can create reports about specific geographies or locations.
PolicyMap is available at various subscription levels. There's a free level, as well as standard, premium, and even student subscription levels. The free level includes datasets such as Census, Postal Service, FBI's city crime rates, County Business Patterns, HUD, and more.