How are homes heated in Union, ME?

Name: Heating fuel in Union, ME, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Fuel oil or kerosene is the most common heating fuel in Union, used by 63.0% (±6.5 points) of occupied homes (2020–2024 American Community Survey).

0.5% heat with utility gas.

8.9% heat with electricity.

Figures last updated on November 12, 2026.

Utility gas: 0.5% (±0.8 points)
Electricity: 8.9%
Fuel oil, kerosene: 63.0%

Heating fuel in Union

Occupied housing units by house heating fuel, 2020–2024
Fuel used most	Union	Knox County	Maine	United States
Utility gas	0.5% (±0.8 points)	1.2%	8.3%	46.5%
Fuel oil, kerosene, etc.	63.0% (±6.5 points)	56.2%	55.3%	3.9%
Electricity	8.9% (±4.1 points)	11.1%	11.2%	41.3%
Bottled or tank gas (propane)	15.2% (±6.0 points)	19.8%	13.8%	4.9%
Wood	11.1% (±4.6 points)	9.7%	8.8%	1.4%
Solar energy	1.3% (±2.1 points)	1.2%	0.4%	0.3%
Coal or coke	0.0% (±2.6 points)	0.1%	0.1%	0.1%
Other fuel	0.0% (±2.6 points)	0.6%	1.7%	0.5%
No fuel used	0.0% (±2.6 points)	0.1%	0.4%	1.2%

The survey asks which fuel is used most to heat the home, so a home with a heat pump and an oil backup is counted once, under the one it uses most.

In Union, the share of homes heating with fuel oil is not measurably different from Knox County (56.2%).

It is also higher than in Maine (55.3%).

It is higher than the national figure (3.9%).

In Union, the share of homes heating with electricity is not measurably different from Knox County (11.1%).

It is not measurably different from Maine (11.2%).

It is lower than the national figure (41.3%).

Homes heated by electricity in places near Union

Nearest places with a published estimate, compared with Union
Place	Distance	Homes heated by electricity	Compared with this place
Union	—	8.9% (±4.1 points)	—
Appleton	4.8 mi	2.3% (±1.9 points)	Lower
Hope	4.9 mi	7.2% (±3.5 points)	Not measurably different
Washington	5.6 mi	6.9% (±4.6 points)	Not measurably different
Warren	7.3 mi	12.0% (±6.4 points)	Not measurably different
Waldoboro	8.8 mi	11.7% (±5.8 points)	Not measurably different
Liberty	9.9 mi	16.1% (±9.5 points)	Not measurably different
Thomaston	10 mi	8.7% (±6.7 points)	Not measurably different
Waldoboro (community)	10 mi	17.0% (±12.6 points)	Not measurably different

Nearby places with a measurably lower figure: Appleton, ME (2.3%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes heated by fuel oil across Knox County, place by place

Rank	Place	Homes heated by fuel oil
1	Vinalhaven	74.7% (±7.2 points)
2	Warren	67.4% (±9.3 points)
3	Thomaston	66.9% (±12.2 points)
4	South Thomaston	65.0% (±7.0 points)
5	Union	63.0% (±6.5 points)
6	Owls Head	59.9% (±6.4 points)
7	Cushing	58.5% (±8.7 points)
8	North Haven	55.8% (±8.4 points)
9	Rockland	55.6% (±7.0 points)
10	Friendship	54.1% (±9.2 points)
11	Appleton	52.8% (±12.8 points)

Showing 11 of 18 places in Knox County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Union

What is the most common way to heat a home in Union?

Fuel oil or kerosene is the most common heating fuel in Union, used by 63.0% of occupied homes (2020–2024 American Community Survey).

How many homes in Union heat with oil?

63.0% (±6.5 points) of occupied homes in Union use fuel oil or kerosene as their main heating fuel.

How many homes in Union have electric heat?

8.9% (±4.1 points) of occupied homes in Union heat mainly with electricity, which includes heat pumps.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Union town, Knox County, Maine

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Union town, Knox County, Maine (county subdivision:78115, in state:23 county:013).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0063PE, DP04_0063PM, DP04_0066PE, DP04_0066PM, DP04_0065PE, DP04_0065PM, DP04_0064PE, DP04_0064PM, DP04_0068PE, DP04_0068PM, DP04_0069PE, DP04_0069PM, DP04_0067PE, DP04_0067PM, DP04_0070PE, DP04_0070PM, DP04_0071PE, DP04_0071PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.