Starbucks in your city

Sometimes in real life we have data that does not fit into our preconceived patterns or formulas. There are so many questions we can ask about the modern world: it is really a bonanza for someone with a bit of curiosity and a numerical sense. Having a graphical bent doesn’t hurt either, as we have seen. But sometimes some imagination is required too, as asking a good question is often the key to further insight. In this step, we’ll have a quick data-driven look at Starbucks coffee shops, from around the world. We’ll be asking how many Starbucks cafes are there in your town?

The Starbucks phenomenon

People enjoy drinking coffee, especially when they are meant to be working. Surely there is a whole story about the rise and rise of coffee drinking in the modern world. One place to start is to dredge up some data. How about the distribution of Starbucks stores in various cities around the world. Here is an initial question to ponder: which city do you think has the most number of Starbucks cafes?

Starbucks data — and the winner is…

There are more Starbucks in Seoul than in any other city: in May 2014 a total of 284. Of course by now there very well might be more. But clearly people in South Korea like coffee. Here are the top ranking cities, measured by the number of Starbucks. Starbucks data: Number of Starbucks as of May 2014 per city

Rank	City	Number of Starbucks
1	Seoul	284
2	New York City	277
3	Shanghai	256
4	London	202
5	Chicago	164
6	Toronto	160
7	Mexico City	160
8	Seattle	142
9	Beijing	137
10	Las Vegas	136
11	Houston	135
12	San Diego	127
13	Calgary	121
14	Taipei	109
15	Vancouver	108
16	Istanbul	106
17	Los Angeles	105
18	Portland	102
19	Phoenix	96
20	Dallas	84
21	San Francisco	82
22	Washington, DC	81
23	Hong Kong	75
24	Edmonton	72
25	San Jose	71
(not on the list)	Sydney	9

Is there some mathematical law here?

Here is the first part of that information, shown as a chart for easier visualisation. It doesn’t look like a Zipf law situation, but it is not that irregular either.

Internet speed and coffee consumption?

Did we mention that the South Koreans also have the fastest internet in the world? Yes we did! And it seems they also rank highly in terms of coffee drinking. Could there be a correlation? Do the places on earth with the most coffee outlets also happen to have the highest internet speeds? Probably it would be a bit rash jumping to conclusions on the base of one rather sparsely documented correlation. But this is sometimes how science proceeds — a small investigation, a question, further research, then a theory.

Discussion

Do you know how many Starbucks are in your town/city?

Do you think the number of Starbucks ought to be distributed in some power law way depending on population?

If you are Canadian, you might rather be interested in the number of Tim Horton coffee shops in your town! Norman is originally from Peterborough, Ontario, with a current population of about 116,000. It has officially 14 Tim Horton outlets, while Toronto has more than 200. So Norman’s best estimate is that Toronto has more coffee shops per capita than any other major city in the world. What do you think is the coffee capital of the world??

And we have to ask: Is there a coffee-internet connection? What do you think?