That number is the result of the massive, largely volunteer effort led by HUD to...

cgrubb on Aug 28, 2015 | parent | context | favorite | on: 13,000 fall into homelessness every month in L.A. ...

That number is the result of the massive, largely volunteer effort led by HUD to count the homeless that is done every January. There are other numbers, but they tend to involve a lot more guesstimating and a lot less data.