What percentage of the economy goes to maintaining security?

You forgot to include military on your list.

The answer would vary by state. Prisons are very expensive to operate (especially when they’re on a “punishment” rather than “rehabilitation” guideline). States with more prisoners, would spend more on this.

I would suspect in an average state the total cost of all that security does not come to 10%, but I have no numbers to back that up. I also wouldn’t be surprised if its at least 5%.

For some comparison; You said to leave out military spending, but its worth noting that the US military is roughly 15–18% of our nations total budget. As a comparison to total national GDP…. 15–18% is of roughly 3.5 trillion (our current annual budget), and our GDP is 14.2 or so trillion.