How much housing you can buy with a million dollars very much depends on what city you are looking to buy in.

According to Knight Frank data cited by CNBC's Robert Frank, a million dollars goes a lot further in Cape Town than it would in Monaco.

But what about in the U.S.?

We looked at housing list price data from real estate brokerage Movoto.com and real estate marketplace Zillow.com. The diagram below shows the number of square feet of housing that you can buy for $1,000,000, based on the median price per square foot in each city: