Natural Gas Price in Iowa (2025)
Natural gas in Iowa costs $1.02 per therm on average for homes ($10.61 per Mcf, 2025) – 31% below the US average and the 7th cheapest of 51 states and DC. The average customer's bill works out to about $51 a month over the year.
Source: EIA annual residential price (2025) and residential use per customer (2024). Latest monthly figure: $2.31/therm in July 2026 (monthly prices swing with the season).
Gas bill in Iowa by usage
| Monthly use | Iowa | At US average |
|---|---|---|
| 30 therms (29 ccf) | $30.69 | $44.38 |
| 60 therms (58 ccf) | $61.39 | $88.76 |
| 100 therms (96 ccf) | $102.31 | $147.93 |
| 150 therms (145 ccf) | $153.47 | $221.89 |
Average price includes delivery and fixed charges spread over all gas sold. Roughly: 30 therms is a summer month with a gas water heater and stove; 100–150 therms is a cold-climate winter month with gas heat.
Price trend
Iowa's average residential price rose from $10.33 per Mcf in 2024 to $10.61 in 2025 (+2.7%). Nationally it went from $14.50 to $15.34.
Gas vs electricity in Iowa
One therm of gas holds the same energy as 29.3 kWh of electricity. At Iowa's 15.99¢/kWh, that much electricity costs $4.69 versus $1.02 for the gas. Gas furnaces turn 80–97% of that into heat, while a heat pump delivers 2–3 times the electricity it uses. Run your own numbers with the heat pump vs furnace calculator, and see electricity cost in Iowa.
How Iowa compares
- South Dakota: $0.95/therm, about $47/month
- Utah: $0.98/therm, about $57/month
- Wisconsin: $1.04/therm, about $58/month
- Michigan: $1.05/therm, about $72/month
- US average: $1.48/therm, about $76/month.
Other West North Central states: North Dakota ($0.92), South Dakota ($0.95), Minnesota ($1.06), Nebraska ($1.10), Kansas ($1.43), Missouri ($1.44).
Frequently asked questions
How much is natural gas per therm in Iowa?
Iowa residential customers paid an average of $1.02 per therm in 2025 ($10.61 per thousand cubic feet), including delivery charges. That is 31% below the US average of $1.48 and ranks 7th cheapest of 51.
What is the average gas bill in Iowa?
The average Iowa gas customer used about 57.5 Mcf (596 therms) a year in 2024, which works out to about $51 a month at 2025 prices, averaged over the year. Winter bills are much higher than summer bills.
Has natural gas gone up in Iowa?
The average price rose from $10.33 per Mcf in 2024 to $10.61 in 2025 (+2.7%).
Is gas or electric heat cheaper in Iowa?
Per unit of energy, gas at $1.02/therm compares with $4.69 for the same energy from electricity at 15.99¢/kWh. A heat pump delivers 2–3 units of heat per unit of electricity, so it can still beat gas – compare with your numbers in the heat pump vs furnace calculator.
Sources: EIA natural gas prices; EIA residential deliveries; EIA number of consumers.