This is pretty much off the top of my head, but I've been wondering about it for a while. Feel free to pick holes in all of my guesswork.

Lets start with the basics.

MC1 has a population of 400 million.

It's divided up into sectors (I can't remember how many) each of which contains a sector house.

Each sector house is fairly well equipped and we have to assume some sort of tek and med facilities.

Each sector house also has some SJS facilities, but I'm not sure if they are staffed permanently.

Let's say for a round figure, a sector house has 100 judges. If we have approx 40 million cits in one sector, that gives us 100 sectors and so 10,000 Judges in sector houses.

BUT we also have other specialised judges:

Psi

Tek

Med

PSU

SJS

Wally Squad

Accounts

Judge Tutors at the academy

"Desk Judges"

(Are isoblock guards judges?)

We have to assume that all of these "specialist" Judges are pretty numerous. Are there more of them than street Judges? For arguments sake, let's say the numbers are equal, so another 10,000 Judges.

I'm assuming med & meat wagon drivers are cits or at least non-Judge level Justice Dept employees.

We also "know" that quite a lot of street Judges are killed off in the line of duty. I we said a weekly? "wastage" of 1%, that means 100 dead street Judges. BUT we don't know how many new cadets are being fed into the system, maybe 10/week? So only a 90 Judge wastage.

So out of 20,000 Judges, there is roughly a 90 Judge loss every week (this number is obviously too high!)

This then begs the question, with all the current Day of Chaos deaths, how many Judges are left? and roughly how long would it take for them to recover to a pre-chaos level?