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2024 mil rate · Cumberland County, ME
Casco property tax rate
Casco's 2024 mil rate is $9.77 per $1,000 of assessed value. A property assessed at $300,000 owes $2,931.00 for the year. That ranks 408th highest of Maine's 482 municipalities, in the lowest quarter, $4.79 per $1,000 below the $14.56 per $1,000 state median.
- 1Mil rate $9.77 per $1,000
- 2Bill on $300,000 assessed $2,931.00
Your Casco tax bill
The bill before exemptions and credits. Compare every Maine rate.
Casco's rate, ratio and tax base
Maine Revenue Services certified Casco's 2024 ratio at 100%: its assessments average 100% of market value, exactly at market. Multiplying the rate by the ratio gives $9.77 per $1,000 of market value at that average level. The state median ratio is 100%, and 234 municipalities are certified at 100%.
The rate comes from the town's own numbers: Casco committed $12,146,033 of property tax on $1,243,196,870 of taxable valuation, and $9.77 per $1,000 on that valuation raises $12,146,033. That commitment ranks 58th of 482 in Maine and is 1.22% of all the property tax committed in Cumberland County's 28 municipalities; the valuation ranks 45th.
Tax on common assessed values in Casco
| Assessed value | 2024 bill | Versus ME median rate |
|---|---|---|
| $200,000 | $1,954.00 | −$958.00 |
| $300,000 | $2,931.00 | −$1,437.00 |
| $400,000 | $3,908.00 | −$1,916.00 |
| $500,000 | $4,885.00 | −$2,395.00 |
| $750,000 | $7,327.50 | −$3,592.50 |
Each bill is the assessed value divided by 1,000 and multiplied by $9.77, before exemptions, credits such as Maine's homestead exemption or special charges. These are assessed values, not sale prices: at a 100% ratio the $300,000 row is a property worth about $300,000. The last column is the difference from the same assessment at the $14.56 per $1,000 state median.
How Casco compares in Cumberland County and Maine
Among the 28 municipalities in Cumberland County, Casco ranks 23rd highest; the county median is $13.51 per $1,000, so Casco sits $3.74 per $1,000 below it. The next higher rate in the county is Chebeague Island at $10.72, and the next lower is Gray at $9.70. Statewide, 15% of municipalities have a lower mil rate than Casco.
Outside Cumberland County, the closest rates are Verona ($9.80, Hancock), Bowdoin ($9.70, Sagadahoc), Friendship ($9.70, Knox), Waltham ($9.85, Hancock). Because towns assess at different shares of market value, the rate multiplied by the certified ratio is the better guide to what a house of a given price pays.
Appealing a Casco assessment
In Maine an abatement starts with a written request to Casco's assessors within 185 days of the tax being committed. The assessors have 60 days to decide; then the appeal goes within 60 days to the Board of Assessment Review, or to the Cumberland County commissioners where the municipality has no board, and on to the Superior Court within 30 days (Maine Revenue Services, Property Tax Bulletin No. 10 (revised March 26, 2020)). Overvaluation is judged against how the town assesses similar property on average, which is where Casco's 100% certified ratio comes in: a $300,000 assessment at that ratio corresponds to about $300,000 of market value.
The Maine appeal page sets out each step with its source and the ratio arithmetic. This is a summary of the published procedure, not legal advice.
Casco property tax questions
What is the property tax rate in Casco, ME?
Casco's 2024 mil rate is $9.77 per $1,000 of assessed value. Source: Maine Revenue Services.
How much is the property tax on a $300,000 assessment in Casco?
$300,000 ÷ 1,000 × $9.77 = $2,931.00 a year, before exemptions and credits.
Is Casco's tax rate high for Maine?
It ranks 408th highest of 482, in the lowest quarter of Maine municipalities; the median is $14.56 per $1,000. Its certified ratio is 100%, so its assessments sit at market value on average.
How do I appeal a Casco property assessment?
Written abatement request to the assessors: 185 days after commitment (36 M.R.S. §§ 841–849 (Bulletin 10)). Then: assessors' decision (60 days); appeal to the board of assessment review or county commissioners (60 days); appeal to the superior court (30 days).
Source: Maine Revenue Services, 2024 Municipal Valuation Return Statistical Summary, Section 1 (certified ratio, commitment, tax rate, total taxable valuation), dated November 19, 2025. Appeal steps: Maine Revenue Services, Property Tax Bulletin No. 10 (revised March 26, 2020). Last checked October 21, 2026. This page explains published figures; it is not tax or legal advice.