Discrepency in 2019 US Households

With the 2019 ACS 1YR PUMS data, I calculate 122,802,904 households with GQ in (0,1,2,5) (same for GQTYPE in (0,9)), but data.census.gov shows 122,802,852. Can anyone shed light on this discrpancy of 52 households?

We do not generally expect to exactly replicate official US Census statistics with public use data, though we expect estimates to be within the margin of error around the official estimates. Official statistics rely on more detailed versions of the data than the public use versions available through IPUMS USA. This Census Bureau FAQ and this blog post from a former colleague provide a bit more information.