Middlesex County, MA Property Tax: $7,240/yr (2026)
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The effective property tax rate in Middlesex County is 1.05% of assessed home value. On a home at the county median value of $687,200, that works out to about $7,216 per year, or $601 per month. Middlesex County is located in northern Massachusetts, and is home to approximately 1,622,896 residents.
About Middlesex County
Middlesex County covers approximately 817.9 square miles in Massachusetts. The county is home to about 1,622,896 residents living in roughly 660,814 housing units, of which 58.8% are owner-occupied. The median household income is $126,779, and the median home was built in 1961.
Middlesex County borders Essex County, Norfolk County, Suffolk County, Worcester County, Hillsborough County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Massachusetts
Property taxes in Massachusetts are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Massachusetts offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Middlesex County Assessor's office to learn which exemptions apply to your property and when to file.
Middlesex County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Middlesex County, MA | 1.05% | $687,200 | $7,216 |
| Massachusetts state average | 1.07% | — | $7,353* |
| Essex County | 1.07% | $584,000 | $6,267 |
| Norfolk County | 1.09% | $649,400 | $7,081 |
| Suffolk County | 0.67% | $680,700 | $4,533 |
| Worcester County | 1.33% | $390,700 | $5,207 |
| Hillsborough County | 1.76% | $385,500 | $6,791 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Middlesex County's median home value of $687,200. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Middlesex County's property tax rate compare to the rest of Massachusetts?
At 1.05%, Middlesex County is lower than the Massachusetts state average of 1.07%. On a home at the county median of $687,200, that means about $7,216 per year — versus $7,353 at the state average rate, a difference of $137 per year. Compared to the national average of 1.10%, Middlesex County is below average.
What's a typical annual property tax bill in Middlesex County?
For a home at the county median value of $687,200, the annual property tax in Middlesex County is approximately $7,216 — or about $601 per month. For a home worth $1,030,800, expect around $10,823 per year. For a $1,374,400 home, approximately $14,431 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Middlesex County property tax assessment?
Property assessment appeals in Middlesex County are handled by the Middlesex County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Middlesex County?
Massachusetts counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 1.05% shown here. Contact the Middlesex County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File