No Kill is on an “S” Curve

Here is a bar graph showing the increase in the human population living in No Kill communities in the 10-year period from 2003 through 2012:

Trend in Population Served by No Kill Communities lg

Here is a graph of an “S” curve:

Logistic-curve.svg

As you can see, growth in the population of people living in No Kill communities closely matches the progression of an “S” curve up until about the -1 point. If the growth of the No Kill population continues along the “S” curve, then the next 10 to 15 years should see phenomenal growth of No Kill, to the point where the great majority of people will be living in No Kill communities. Pretty cool, huh?

Thanks go to Chris Anderson for the lovely bar graph. He prepared it for his talk at the recent Michigan No Kill conference, based on data from this blog.

You may be wondering why the graph does not contain 2013 data, and the reason is that I have not yet had time to add that data to my giant spreadsheet of over 100 shelters and coalitions representing No Kill communities. But when the data for 2013 are added, they will show another big jump over 2012. The 2012 numbers do not count Fairfax County, Kansas City, the Portland metro area, or the Seattle metro area, which by themselves would be enough to take the next big leap up the “S” curve. Good times.

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