Back to the topic of local rents and their relationship to incomes, I found some historical data on San Diego’s median household income at the Census Bureau website.
The median household income is better than per capita income, which I used in the prior article, because it is a median while per capita income is an average. A median is the middle value in an ordered set of data, and unlike an average it is not thrown off by extreme outlier values (per the "Bill Gates problem," in which Mr. Gates walks into a dive bar and the average net worth of all bar patrons skyrockets into the millions). So the median makes for a better indication of what the typical San Diegan household, and especially the typical San Diegan renter household, earns.
The Census site also had data on the median San Diego rent, which is also good. The downside is that the Census data only goes back to 2001 and is current through 2007. So we don’t get the same long-term view as in last week’s article, but it’s worth taking a look at this alternate set of numbers.
With all that said, here is a chart of the median rent as a percentage of median household income for San Diego: