Start by looking at our Pittsburgh Census Guide. The guide will explain how Census data is collected and organized, which is helpful when finding the data. The key thing to know is that data is collected by tract and not necessarily by neighborhood. On that guide, you'll see tabs for Allegheny County Census Tracts 2000-2020 and Pittsburgh Census Tracts 1940-2020. This is where you will find the Census tract numbers for the given areas.
Once you have the tract numbers, you can find your data in two different places. First is a database called Social Explorer, which is only available to Pitt affiliates. You can put together some nice maps using this site, but let's focus on finding data. On the homepage, click on "tables" to get started. From there, click on American Community Survey 5 year estimates and choose the most recent one. On the next screen click on geography type and change it to census tract. Then choose PA and Allegheny County in the next dropdown menus. Finally, select your census tracts and click "add." You can then click proceed to tables and select the tables you're interested in. From here, you can print or save the tables themselves. Social Explorer offers search guides and videos if you need them.
Alternatively, you can go to Data.Census.Gov from the US Census, which is a free site. The advanced search will allow you to search by Census tract. (The Advanced Search link is just below the search bar on the main screen.) In advanced search, if you click on "Geography" on the left-hand side, you can choose to search by tract. Then navigate to Pennsylvania>Allegheny County and then choose the tracts in which you're interested. (You can also search for particular tracts by using the search box above the tract list.) When you choose each tract, you'll see them added to the search bar at the bottom of the screen. If you want to narrow your search further, please use the categories on the left-hand bar. The Census Bureau offers extensive how-tos and other assistance for Data.Census.Gov.
You may contact Government Information Librarian Christopher Lemery at clemery@pitt.edu for further assistance.
