Latest residential propane price in Illinois
According to the EIA Weekly Heating Oil and Propane Survey, the latest residential propane price in Illinois is $2.026 per gallon for the week of March 30, 2026. The figures below put that number in context against the national average and other surveyed states.
$2.026
Illinois average
Week of March 30, 2026
$2.674
US national average
Same week, EIA WHOPS
▼ -24.2%
vs. national
Below the US average
#6 of 38
Cheapest-state ranking
1 = cheapest of all surveyed states
Source: EIA Weekly Heating Oil and Propane Survey, residential retail (USD per gallon). The EIA does not survey every state individually each week — see current US propane prices for the full state ranking and 3-year history.
Propane usage and context in Illinois
Illinois's cold winters and Midwest cold-climate character shape the role propane plays in the state. Propane is concentrated in rural homes outside Nicor Gas and Peoples Gas distribution, manufactured housing, and the substantial corn and soybean grain-drying agricultural demand, with much lower household penetration inside the Chicago, Rockford, Peoria and Springfield metros where natural-gas distribution is dense.
Supply economics in Illinois are shaped by being from the Conway, Kansas storage hub and Midwest fractionation. Retail propane in Illinois typically tracks the middle band of the national price range published by the EIA Weekly Heating Oil and Propane Survey during the October–March heating season.
For a current, household-specific picture, request itemised quotes from several Illinois propane companies and compare per-gallon prices alongside tank rent, delivery fees and contract terms.
Propane companies with outlets in Illinois (IL)
All three major national propane companies operate in Illinois: AmeriGas, Suburban Propane and Ferrellgas. Regional and specialty operators serving the state include Cenex (CHS) (and MFA Oil have meaningful Illinois footprints). Beyond these, local independents and farmer cooperatives serve the long tail of rural addresses — often beating the nationals on price for high-volume customers.
Build a shortlist of three to four dealers serving your address — one national, one regional, one local — and compare itemised quotes. See how to select a propane company and getting quotes.
The Illinois propane industry and regulations
The Illinois Propane Gas Association represents propane marketers operating in Illinois, coordinates training under the NPGA / PERC Certified Employee Training Program, and advocates on state regulatory matters.
State-level LP gas oversight in Illinois sits with the Illinois Office of the State Fire Marshal, Division of Petroleum and Chemical Safety, which licenses dealers, inspects installations, and enforces NFPA 58 as adopted in Illinois Administrative Code Title 41, Chapter 1, Part 200 (Storage, transportation, sale and use of LPG). Federal DOT and OSHA rules layer on top of state requirements. For run-out and emergency procedures see what to do if you smell gas and running out of propane.
Frequently asked questions
Who has the cheapest propane in Illinois?
There is no single cheapest dealer — pricing is set account-by-account based on tank size, fill volume, contract type and route density. Get itemised quotes from at least three dealers (one national, one regional, one local independent) and compare on all-in annual cost rather than headline gallon rate.
What is the current propane price in Illinois?
Heading into the heating season, the EIA Weekly Heating Oil and Propane Survey publishes regional and state-where-available averages every Monday from October through March. Illinois typically prices in the middle band of the national range. See current US propane prices.
Does Illinois have an anti-fill law?
Anti-fill statutes (which constrain dealer lock-in via mandatory disclosure, capped pickup fees, or right to purchase a leased tank) exist in roughly 10-15 US states. Check with the Illinois Office of the State Fire Marshal, Division of Petroleum and Chemical Safety or the state attorney general consumer protection division for the current rules in Illinois.