Connecticut Mill Rates by Town 2026: Full List (169 Towns)

Connecticut does not have a single statewide property tax rate. Instead, each of the state's 169 towns and cities sets its own mill rate every year as part of its municipal budget process — and the differences are enormous. For the fiscal year running July 1, 2026 through June 30, 2027 (based on the October 1, 2025 grand list), mill rates range from a low of 9.8 mills in Salisbury to a high of 69.95 mills in Hartford, a spread of more than 7-to-1 (Canterbury had not yet reported a FY 2026–27 rate in the state dataset).

This page is a complete reference table of every Connecticut town's mill rate, sourced directly from the State of Connecticut's official open data portal (dataset published by the Office of Policy and Management, OPM). If you want the full explanation of how CT property tax works, why rates vary so dramatically by town, revaluation cycles, and relief programs for seniors and veterans, see our companion guide: Connecticut Property Tax 2026: Mill Rates, Town-by-Town Guide & Relief Programs.

How to Calculate Your Property Tax Bill from a Mill Rate

A mill rate is the dollar amount of tax charged per $1,000 of assessed property value. One mill equals $1.00 of tax per $1,000 of assessed value. The formula is:

Annual Property Tax = (Assessed Value ÷ 1,000) × Mill Rate

Connecticut law (CGS §12-62a(b)) requires every town to assess real property at 70% of its estimated fair market value — this assessment ratio is uniform statewide. So the calculation happens in two steps:

Step 1 — Find your assessed value: Market value × 70%. A $300,000 home has an assessed value of $300,000 × 0.70 = $210,000. (You can find your official assessed value on your town assessor's field card or your annual tax bill — do not just estimate it, since revaluation years can move a town's average up or down.)

Step 2 — Apply the mill rate: Assessed value ÷ 1,000 × mill rate. In a town with a 30 mill rate: $210,000 ÷ 1,000 × 30 = $6,300 per year. In Hartford's 69.95 mill rate, the same $210,000 assessed value produces $210,000 ÷ 1,000 × 69.95 = about $14,690 per year. In Salisbury's 9.8 mill rate, it's just $210,000 ÷ 1,000 × 9.8 = $2,058 per year.

The estimated-tax column in the table below uses this exact method, applied to a $300,000 home value (assessed value $210,000), so you can compare towns on an apples-to-apples basis. Your actual bill depends on your property's specific assessed value, not the town median — always confirm the current mill rate and your assessment with your local assessor's office before budgeting.

A note on motor vehicles: The same base mill rate generally applies to cars and other personal property, but Connecticut law caps the motor vehicle mill rate at 32.46 mills (CGS §12-71e). So if a town's real-property mill rate is 40, a car registered there is still taxed at no more than 32.46 mills. In towns whose real-property mill rate is already below 32.46 (most of the state), the motor vehicle rate simply matches the real-property rate.

Special taxing and fire districts: Some villages within a town — for example, several sections of Ashford, Avon, and Barkhamsted — have separate fire districts, lake associations, or special taxing districts that levy an additional mill rate or flat fee on top of the town-wide rate. The table below shows each town's primary, town-wide real-property mill rate; if you live in a fire district or special taxing area, check with your town assessor for any additional district rate that applies to your specific address.

Connecticut Mill Rates by Town: Full List for FY 2026–27 (All 169 Towns)

The table below lists the real and personal property mill rate for every Connecticut town, for fiscal year 2026–27 (based on the October 1, 2025 grand list), from the State of Connecticut open data portal's OPM mill rate dataset (Mill Rates for FY 2014–2027). Towns are listed alphabetically. The "Est. Tax on $300K Home" column applies Connecticut's 70% assessment ratio to a $300,000 fair market value home ($210,000 assessed value) and is for comparison purposes only — your actual assessed value may differ.

Mill rates change every year as towns finalize their municipal budgets, typically in the spring for the fiscal year beginning July 1. Always confirm your town's current rate directly with your local tax assessor or collector before making a purchase or budgeting decision — this table reflects the OPM dataset as it stood in October 2026 and will be reviewed annually.

Highest and Lowest Mill Rate Towns in Connecticut (2026)

Connecticut's mill rate spread is wide — a direct result of the state funding schools and municipal services largely through local property taxes. See our full Connecticut property tax guide for the structural reasons behind this gap.

10 Highest Mill Rates (FY 2026–27)

10 Lowest Mill Rates (FY 2026–27)

The lowest-mill-rate towns are concentrated in Litchfield County (Salisbury, Washington, Sharon, Warren, Roxbury) and Fairfield County (Greenwich, Westport, Shelton), where high property values mean a small mill rate can still raise substantial tax revenue. The highest-mill-rate towns — Hartford, Hamden, East Hartford, West Hartford, and Waterbury — are cities and inner-ring suburbs with lower taxable property values relative to their budgets; a large share of tax-exempt property (state buildings, hospitals, universities) is one commonly cited factor in places such as Hartford.

How Often Connecticut Mill Rates Change

Connecticut mill rates are set annually by each town's board of finance (or equivalent body) as part of the municipal budget process, typically finalized in the spring ahead of the fiscal year that begins July 1. The rate is calculated by dividing the town's approved budget (minus state aid and other non-property-tax revenue) by the total value of the town's grand list — the assessed value of every taxable property in town as of the prior October 1.

Because the grand list is the denominator, a town's mill rate moves for two separate reasons:

• Budget changes: If a town's approved spending rises faster than its grand list, the mill rate goes up, even with no change in property values.
• Revaluation: Connecticut law (CGS §12-62) requires each town to revalue all taxable property every five years, on a schedule set by OPM for the town's revaluation zone. When a revaluation raises total assessed values sharply (as happened broadly after the post-pandemic housing run-up), towns typically lower the mill rate to avoid a windfall — but individual bills still shift up or down depending on whether a given property appreciated faster or slower than the town average.

This means the mill rates in the table above are for FY 2026–27 only. Every town's rate is subject to change with the next budget cycle (the fiscal year beginning July 2027) and again at each town's next scheduled revaluation. We review and update this table annually — check the "Last Updated" date at the top of this page, and always confirm the live rate with your town's tax collector or assessor before relying on it for a purchase, refinance, or budgeting decision.