Who's moving to Massachusetts
Where households are arriving from and leaving for, county by county — built on official federal tax-filer data, not marketing estimates.
-15,378 net households from other states-15,378 net households — For every 100 households that arrived from another state, about 118 left. Massachusetts is a net loser to other states. The pace has held steady over five years. Another 1,832 households arrived from abroad.
Gained households from other states
Lost households to other states
Circle size — households that moved in or out.
Cambridge · Middlesex County — the busiest moving market in Massachusetts.
Households arriving in Massachusetts from another state report $89,890 in average annual income; those leaving for another state report $116,609. Departures out-earn arrivals — Massachusetts is losing its higher earners.
How this works: IRS SOI County-to-County Migration Data, 2022-2023. The IRS compares the address on consecutive tax returns, so every move here is a real filed household. The headline figures and county lists count moves that crossed a state line; the five-year chart counts every move, including from abroad. The data publishes annually with about a two-year lag, misses people who don't file a return, and leaves 16% of moves unattributed to a specific county, because flows too small to publish are grouped into regional buckets. 14 of Massachusetts's counties have published data.