There are 64,645 residential properties in Franklin County, 32,625 of which (50.5%), are investment properties according to the vacancy rate report for the 3rd quarter of 2019 by ATTOM Data Research. The other St Louis area county with a percentage of investment properties higher than the rate for the St Louis MSA as a whole of 23.8% is the city of St Louis where 41.5% of the residential properties are investor-owned.