Open web sources can be searched, typically using search engines such as Google, and are available on the internet without requiring authentication (such as user name & password, or a payment being made).
Because anyone can publish anything online, it is very important to take extra time evaluating these resources.
Fact Checking Websites
Do not forget to check the "About" sections of these websites...
data.census.gov is the new platform to access demographic and economic data from the U.S. Census Bureau. You can find economic, demographic or housing information about your city, county, state - or the entire United States.