How are homes heated in Calmar, IA?

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

Utility gas is the most common heating fuel in Calmar, used by 80.7% (±9.1 points) of occupied homes (2020–2024 American Community Survey).

18.0% heat with electricity.

0.0% heat with fuel oil or kerosene.

Figures last updated on November 12, 2026.

Utility gas: 80.7% (±9.1 points)
Electricity: 18.0%
Fuel oil, kerosene: 0.0%

Heating fuel in Calmar

Occupied housing units by house heating fuel, 2020–2024
Fuel used most	Calmar	Winneshiek County	Iowa	United States
Utility gas	80.7% (±9.1 points)	42.1%	60.2%	46.5%
Fuel oil, kerosene, etc.	0.0% (±6.1 points)	1.4%	0.3%	3.9%
Electricity	18.0% (±9.3 points)	15.3%	24.4%	41.3%
Bottled or tank gas (propane)	0.8% (±1.6 points)	36.4%	12.6%	4.9%
Wood	0.0% (±6.1 points)	3.4%	1.1%	1.4%
Solar energy	0.0% (±6.1 points)	0.2%	0.1%	0.3%
Coal or coke	0.0% (±6.1 points)	0.0%	0.0%	0.1%
Other fuel	0.5% (±0.9 points)	1.0%	0.7%	0.5%
No fuel used	0.0% (±6.1 points)	0.4%	0.6%	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 Calmar, the share of homes heating with fuel oil is not measurably different from Winneshiek County (1.4%).

It is not measurably different from Iowa (0.3%).

It is not measurably different from the national figure (3.9%).

In Calmar, the share of homes heating with electricity is not measurably different from Winneshiek County (15.3%).

It is not measurably different from Iowa (24.4%).

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

Homes heated by electricity in places near Calmar

Nearest places with a published estimate, compared with Calmar
Place	Distance	Homes heated by electricity	Compared with this place
Calmar	—	18.0% (±9.3 points)	—
Fort Atkinson	4.2 mi	5.2% (±5.3 points)	Lower
Spillville	4.5 mi	19.7% (±8.2 points)	Not measurably different
Ossian	5.7 mi	15.7% (±9.2 points)	Not measurably different
St. Lucas	8.6 mi	14.5% (±14.7 points)	Not measurably different
Decorah	9.3 mi	23.1% (±4.7 points)	Not measurably different
Ridgeway	10 mi	36.0% (±13.7 points)	Higher
Jackson Junction	11 mi	7.7% (±18.1 points)	Not measurably different
Castalia	11 mi	2.8% (±5.1 points)	Lower

Nearby places with a measurably lower figure: Fort Atkinson, IA (5.2%), Castalia, IA (2.8%).

Nearby places with a measurably higher figure: Ridgeway, IA (36.0%).

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

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

Rank	Place	Homes heated by fuel oil
1	Jackson Junction	15.4% (±26.0 points)
2	Spillville	5.1% (±5.0 points)
3	Fort Atkinson	3.2% (±3.7 points)
4	Decorah	0.3% (±0.5 points)
5 (tie)	Calmar	0.0% (±6.1 points)
5 (tie)	Castalia	0.0% (±28.6 points)
5 (tie)	Ossian	0.0% (±6.8 points)
5 (tie)	Ridgeway	0.0% (±16.4 points)

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 Calmar

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

Utility gas is the most common heating fuel in Calmar, used by 80.7% of occupied homes (2020–2024 American Community Survey).

How many homes in Calmar heat with oil?

0.0% (±6.1 points) of occupied homes in Calmar use fuel oil or kerosene as their main heating fuel.

How many homes in Calmar have electric heat?

18.0% (±9.3 points) of occupied homes in Calmar heat mainly with electricity, which includes heat pumps.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Calmar city, Iowa

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 Calmar city, Iowa (place:10045, in state:19).

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.