USCB is an acronym for the United States Census Bureau, and it refers to the federal agency that collects and analyzes data about the American population. While there are no direct synonyms for this particular acronym, there are related terms that may be useful in contextualizing its meaning. For example, demography or population statistics may be used to describe the data that the USCB collects, while the term census may be used to refer to the actual process of counting people. Another term that may be related is the Bureau of Labor Statistics, which collects data on employment and economic trends in the US.