Property Taxes in Fairfield County, Connecticut — What to Expect

By Sean Jackson· June 1, 2026

Property taxes in Fairfield County are calculated using a mill rate applied to 70% of a property's assessed value. The mill rate varies by town — and the variation is significant enough to change which towns make financial sense at specific price points. ## Annual Tax Estimates by Town ### Greenwich (mill rate 11.25) - $1M home: approximately $7,875/year - $1.5M home: approximately $11,813/year - $2M home: approximately $15,750/year ### Darien (mill rate 14.69) - $1M home: approximately $10,283/year - $1.5M home: approximately $15,425/year - $2M home: approximately $20,566/year ### New Canaan (mill rate 16.17) - $1M home: approximately $11,319/year - $1.5M home: approximately $16,979/year - $2M home: approximately $22,638/year ### Westport (mill rate 18.17) - $1M home: approximately $12,719/year - $1.5M home: approximately $19,079/year - $2M home: approximately $25,438/year ### Ridgefield (mill rate 28.60) - $700K home: approximately $14,014/year - $1M home: approximately $20,020/year - $1.3M home: approximately $26,026/year ## Why the Most Expensive Towns Often Have the Lowest Rates Greenwich has the lowest mill rate in Fairfield County and the highest median home prices. This is not a coincidence. Mill rates are set to generate sufficient tax revenue for each municipality. In a town where property values are very high, a lower rate still produces the revenue the town needs. The implication for buyers: evaluating towns on purchase price alone, without understanding the annual tax bill, produces a distorted picture of the true cost of ownership.

Sean Jackson

Connecticut Lifestyle & Homes · Licensed REALTOR® · Keller Williams Realty Partners