Marlborough vs Southborough
You are paying about $575k more for a 4BR in Southborough, and in exchange you get the stronger schools. That is the trade in plain terms: $575k for three tiers of schooling.
On tax, look past the rate: Marlborough works out roughly $10,400 a year cheaper on its own median 4BR.
Choose Marlborough if you want the lower price.
All Marlborough numbers →Choose Southborough if you want the stronger schools of the two, or the commute matters most, or you want a train.
All Southborough numbers →Side by side
The better of the two is highlighted on each row. Where a row is not highlighted, the two are close enough that calling a winner would be false precision.
| Marlborough | Southborough | |
|---|---|---|
| School tier | mixed schoolsT4 | top schoolsT1 |
| MCAS percentile | 14th | 97th |
| Niche district rank | — | — |
| 4BR house | $675kT2 | $1.25MT3 |
| 2BR condo | $400k | $665k |
| Commute to Boston | 60 minT3 | 58 minT3 |
| MBTA rail | No MBTA rail | Commuter rail · ~60 min to terminal |
| Tax rate | $10.54T2 | $14.00T3 |
| Est. tax bill on that 4BR | ≈$7,100 | ≈$17,500 |
| 3BR rent | $3,080/mo | $4,083/mo |
Prices are estimates calibrated to the Zillow Home Value Index and Redfin; tax rates are FY2026 residential rates and the bill applies that rate to the town’s own median 4BR estimate; commutes take the rail leg from the MBTA timetable and still model the drive; rents are HUD FY2026 Small Area Fair Market Rents. School tiers are editorial and shown next to the state’s own MCAS figures. Data last reviewed — see the methodology. This comparison never uses demographics as an input.
