Although HUD uses the most recent data available concerning local area incomes, there is still a lag between when the data are collected and when the data are available for use. For example, FY 2024 Income Limits are calculated using 2017-2021 5-year American Community Survey (ACS) data, and one-year 2021 data where possible. This is a two-year lag, so more current trends in median family income levels are not available.