Illinois Propane Price Per Gallon (Latest EIA: 30 March 2026)
Illinois residential / week ending 30 March 2026
$2.026/ gallon
vs national
$-0.65
vs 4 weeks ago
-2.0%
Season change
+$0.30
As of the week ending 30 March 2026, the residential propane price in Illinois was $2.026 per gallon (EIA series W_EPLLPA_PRS_SIL_DPG). The Illinois price is below the US national average of $2.674 by $0.65 per gallon. Across the 2025-2026 heating season, the Illinois residential figure moved from $1.724 to $2.026.
How Illinois compares
| Comparison | Reference price | Difference |
|---|---|---|
| Illinois vs US national average | $2.674 | $-0.65 (-24.2%) |
| Illinois vs 5-year US average | $2.580 | $-0.55 |
| Illinois season start (Oct 2025) | $1.724 | +$0.30 |
What drives the Illinois price
Illinois runs well below the national average, in the same low band as Wisconsin and Minnesota. PADD 2 terminal density and distributor competition keep the retail spread tight. The February 2026 cold snap lifted the residential price roughly 25 cents (from $1.96 in late January to a $2.20 peak), and the series gave most of that back by the end of the season.
For Illinois household cost
Want annual Illinois household cost?This page tracks the Illinois market price per gallon. For Illinois household annual cost calculation including tank size, climate zone, and gallons used per heating season, see propanecostpergallon.com.