Illinois Propane Prices in 2026
16 EIA surveys, Jan 5, 2026 to Oct 19, 2026 (year in progress)
Last updated
- Average
- $2.011
- High
- $2.204
- Feb 9
- Low
- $1.831
- Oct 5
- Against 2025
- Up +$0.120 (+6.3%)
- change in average
In 2026 so far, EIA published 16 residential propane prices for Illinois. They averaged $2.011 a gallon, from a low of $1.831 on October 5, 2026 to a high of $2.204 on February 9, 2026.
The average was 6.3% above 2025’s $1.891.
EIA surveys only during the heating season in most years, so there are no Illinois values for April, May, June, July, August and September.
Week by week
Every survey in 2026
| Month | Survey dates and prices | Month average |
|---|---|---|
| January | Jan 5$1.897Jan 12$1.902Jan 19$1.894Jan 26$1.955 | $1.912 |
| February | Feb 2$2.132Feb 9$2.204Feb 16$2.167Feb 23$2.129 | $2.158 |
| March | Mar 2$2.068Mar 9$2.063Mar 16$2.034Mar 23$2.032Mar 30$2.026 | $2.045 |
| October | Oct 5$1.831Oct 12$1.904Oct 19$1.943 | $1.893 |
Source: U.S. Energy Information Administration, weekly propane residential price table. Prices exclude taxes.
Propane — weekly Illinois, CSV (12 rows, from 2026-02-02 to 2026-10-19)
Columns: survey_date, area, fuel, price_usd_per_gallon_excl_taxes. Prices are residential, in dollars per gallon ($/gal), excluding taxes. Source: EIA.