What determines residency for jury duty? (NJ, USA)

Factual Questions
1

So, I’ve long been of the opinion that, in the US, there is no one good definition of residency. (Where do you live? In which state?)

What do exist, however, are various definitions defined by various agencies for their specific purposes, and quite frankly, I think this residue of federalism is A-OK. For example, I know (or can easily find out) how the following agencies define residency: the IRS, various state depts of taxation/revenue, various state DMV/BMVs, various state/county depts of voter registration, various state universities. I have no reason to assume that these numerous definitions don’t in some way contradict each other.

BUT, what I cannot figure out, and what has always bugged me, is who the hell determines when/if you get jury duty? How the hell do they determine residency for jury duty? Is it by where I filed my taxes? Where I’ve registered to vote? What my driver’s license says on it? Please to note a citizen can have none of these! (What always pisses me off is when I ask somebody how it’s determined, they answer without thinking, “It’s where you live, duh.” Then I have to explain that there is no one central governmental definition of residency…)

Well, I live in New Jersey, and today I got a summons from the Middlesex County Jury Management Office. Great! That answers my question, right? It’s the Middlesex County Jury Management Office which determines residency, right? But I never gave them my address! Until today, I didn’t know they exist!

And furthermore, I moved to Hudson County last August. I filed my taxes with my new address. I notified every relevant agency that I had moved. But apparently I forgot to notify the Middlesex County Jury Management Office. I even told the USPS, and they were kind enough to forward the jury duty summons from my old address. (In case you were thinking they summoned me from an address in a different county)
In summary, how did the Middlesex County Jury Management Office get my address, and why do they have it wrong?

2

It looks like New Jersey gets lists of jurors from registered voters and from holders of state driver’s licenses/IDs. Middlesex County’s list just hasn’t caught up with the facts yet. My ex-wife was once forwarded a summons from Massachusetts when we’d lived in two other states since then.

There should be a box you can check that you no longer live there, then return it. No big deal.

3

Thank you, Frank. Just out of curiosity, where did you find that NJ gets jurors from registered voters?

Oh, I see that box. It’s just that I’ve always wanted to be called for jury duty, and now that I have, I’m ineligible to serve… How can I inform the Hudson County secret juror cabal that I live here? Oh, and I would be happy to go down to New Brunswick (Middlesex County seat) for jury duty! (I do still work there anyway.)

4

I googled: new jersey residency jury duty, and it showed up on a couple of election sites(!). Part of an FAQ from (iirc) New Jersey’s site, and one from Princeton.

5

When I was growing up, it was determined by voter registration lists in any jurisdiction I was in. One trouble with that was, being as most people don’t want to serve, it cut down voting. (Incidentally, the US is the only democratic country I know of that makes it the voter’s duty to register.) Later on, many states added driver’s licence registrations.

My son lived in Manhattan and then moved to Queens nearly a year ago. A couple weeks ago, he got a summons for jury duty from NY County and had to return it since he is not in NY County any more.

6

When I was called for Jury Duty last spring they told us during the orientation that the list was compiled from the Drivers License and State ID registrations. In Milwaukee anyway.

Rob