Natural Gas Price in Washington (2025)
Natural gas in Washington costs $1.70 per therm on average for homes ($17.62 per Mcf, 2025) – 15% above the US average and the 39th cheapest of 51 states and DC. The average customer's bill works out to about $96 a month over the year.
Source: EIA annual residential price (2025) and residential use per customer (2024). Latest monthly figure: $2.48/therm in July 2026 (monthly prices swing with the season).
Gas bill in Washington by usage
| Monthly use | Washington | At US average |
|---|---|---|
| 30 therms (29 ccf) | $50.97 | $44.38 |
| 60 therms (58 ccf) | $101.95 | $88.76 |
| 100 therms (96 ccf) | $169.91 | $147.93 |
| 150 therms (145 ccf) | $254.87 | $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
Washington's average residential price rose from $12.72 per Mcf in 2024 to $17.62 in 2025 (+38.5%). Nationally it went from $14.50 to $15.34.
Gas vs electricity in Washington
One therm of gas holds the same energy as 29.3 kWh of electricity. At Washington's 14.71¢/kWh, that much electricity costs $4.31 versus $1.70 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 Washington.
How Washington compares
- Alabama: $1.69/therm, about $54/month
- New York: $1.70/therm, about $127/month
- Vermont: $1.74/therm, about $108/month
- Arizona: $1.79/therm, about $46/month
- US average: $1.48/therm, about $76/month.
Other Pacific Contiguous states: Oregon ($1.61), California ($2.12).
Frequently asked questions
How much is natural gas per therm in Washington?
Washington residential customers paid an average of $1.70 per therm in 2025 ($17.62 per thousand cubic feet), including delivery charges. That is 15% above the US average of $1.48 and ranks 39th cheapest of 51.
What is the average gas bill in Washington?
The average Washington gas customer used about 65.6 Mcf (680 therms) a year in 2024, which works out to about $96 a month at 2025 prices, averaged over the year. Winter bills are much higher than summer bills.
Has natural gas gone up in Washington?
The average price rose from $12.72 per Mcf in 2024 to $17.62 in 2025 (+38.5%).
Is gas or electric heat cheaper in Washington?
Per unit of energy, gas at $1.70/therm compares with $4.31 for the same energy from electricity at 14.71¢/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.