Fair enough, but I here is the logic behind these groupings.
Thompson, the NE corner of the state is pretty damn close to Worcester, but more appropriately it is more closely tied to Worcester MA than any other metro or micro area.
if you click this link you will see the CERC data page on the town. on Page 2 halfway down on the right side you will see the commuter info.
http://www.fastfacil...up/Thompson.pdf
this data indicates that the people who live in Thompson work in the following communities. It also shows that far more people drive out of town to work than drive into town. so Thompson is definately not an employment hup. its more of a spoke in the wheel feeding another town.
Thompson 733
Putnum 620
Webster, MA 487
Worcester, MA 457
Killingly 288
Woodstock 182
Dudley, MA 130
Southbridge, MA 115
Plainfield 100
Auburn, MA 96
So Thompson is most closely tied to Putnum, Looking at putnum But if you look at all of those MA towns and cities you can see that more people drive North than South for work. Very few people drive into Rhode Island. All of those MA towns and cities are part of the Worcester MSA, so by default ever person commuting to Webster counts for Worcester. So, Thompson sends 487+457+130+115+96=1285 workers to the Worcester MSA every day.
Now I am not going to go through each and every town, but sometimes these methods lead to some kind of cascading linking of towns.
Putnum appears to be a small Hub because besides Thompson, Woodstock lists Putnum as its top employer as does Pomfret and Killingly. But clearly a lot of these people head to Worcester or its burbs for shopping and cultural reasons as well, because its not just about work.
Also it should be noted that Putnum sends more workers to Worcester than it does to Hartford or Norwich, so maybe this ties Putnum to Worcester, and therefore all those people from Woodstock, Pomfret and Killingly technicly commute to Worcester. hence the cascade I mentiond.
http://www.cerc.com/...les/default.asp
Also it appears as though almost noone from that neck of the woods heads to Rhode Island. I looked at all the towns on the Eastern edge of Windham, and only one lists a RI town in its top 10. Sterling, who send a mere 30 commuters to Providence (ranked 10th)
I am not sure the dates all this data is from, but it is very detailed, so very interesting, but also time sensative. I am sure Killingly crossing will actually completely remap this part of the state. That single shopping center likely employs 500 people full time. Adding that to Killingly makes it more of the center of this Micro area.
Also some factories closed out there I think too. right?