Today's Graph - Business in SF
Number of Businesses by Zipcode in San Francisco
Registered business locations in San Francisco maintained by the Office of Treasurer-Tax Collector, including business locations that have been sold, closed, or moved out of San Francisco. A link to the dataset is here.
Below is a very simple Choropleth visualization of the number of business in the dataset per zipcode. It does not isolate for sold/closed/or moved. That would be a useful extension. It was created using CartoDB. IPython notebook to organize data is here.