Neighborhoods in St. Louis do not exactly fit into precise census tracts as set by the U.S. Census. To see what fits where, here is a helpful map created by SLU library faculty member, John Montre.
Social Explorer provides an easy to use interface for census information that ranges from current to historic and also provides data access to the American Community Service (ACS) projects.
You may navigate using the Map and zooming in closer and closer or you may use the Find tool to move directly to the closest location.
The Reports Tab allows you to generate data in tabular form and that may be exported to Excel if desired. The Excel format enables the data to be imported into statistical analysis software such as SPSS.