The Census Bureau uses a Master Address File (MAF) to distribute self-response forms and identify which residences require enumerator follow-up for the decennial census. If an address is left off the Census’ MAF, residents within that unit will go undercounted. In hard-to-count communities, as many as 2-3% addresses may be missing from the Census’ MAF. Due to budget cuts, the US Census Bureau will have fewer resources and staff to perform on-the-ground, address canvassing, which helps ensure the accuracy of its MAF. Cities and counties had the opportunity to contribute to an accurate MAF earlier this year by performing their own, local address canvassing, a process known as the Local Update of Census Addresses (LUCA).