About the US Census data
American Community Survey (ACS) data is available in 1-year and 5-year estimates for geographies with a population greater than 65,000. For smaller geographies, ACS data is available in 5-year estimates only. This means that the 2023 5-year data set is an average of the data for 2019-2023. The 1-year data sets are less statistically reliable than the 5-year sets but are useful if the currency of the data matters most.