Supply Explorer
Rack market

Mason Cty/Clr.Lk., IA

#232 of 422 U.S. rack markets by terminals

OPIS rack city 433 Gasoline & diesel Aviation gasoline Biodiesel Ethanol
terminals
1
pipeline systems delivering
1
refineries confirmed
0
more per research or by route
8
people in the trade area
136,895
gal/day gasoline · estimated demand
236,103
gal/day diesel · estimated demand
123,107

Terminals in this market

The racks that post prices in this market. Pipelines = systems with a tariff delivery point at the terminal.
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Terminal TCN Location Delivered by
Magellan Pipeline Company - Mason City T-42-IA-3465 Clear Lake, IA Magellan Midstream

Pipelines delivering to this market

Each system with a tariff delivery point at one of this market’s terminals, and how many running refineries can ship on it to here.

Pipeline system Terminals here Delivery points Refineries confirmed All reachable
Magellan Midstream 1 1 0 7

Refineries that can supply this market

Running refineries that can reach a terminal here by published route, including across connecting carriers, confirmed links first. 0 are confirmed or named in a tariff; 4 are per research; 4 are inferred because the refinery shares a city with a tariff origin. Capacity, contracts and who actually ships are not known from tariffs.
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Refinery Location Via Link
CHS McPherson Refinery Mcpherson, KS Magellan Midstream per research
Flint Hills Resources Pine Bend Refinery Saint Paul, MN Magellan Midstream per research
Phillips 66 Ponca City Refinery Ponca City, OK Magellan Midstream, Phillips 66 Pipeline per research
Valero Ardmore Refinery Ardmore, OK Magellan Midstream per research
Borger Refinery (WRB Refining / Phillips 66) Borger, TX Phillips 66 Pipeline inferred (same city)
CVR Wynnewood Refinery Wynnewood, OK Magellan Midstream inferred (same city)
Cenovus Superior Refinery Superior, WI Magellan Midstream inferred (same city)
HF Sinclair El Dorado Refinery El Dorado, KS Magellan Midstream inferred (same city)

Trade area

people in the trade area · 2025 estimate
136,895
rank of 422 rack markets by people
#346
gallons of gasoline a day · estimate, 2025
236,103
gallons of diesel a day · estimate, 2025
123,107
counties wholly in this market
3
counties shared with other markets
14
An estimate of who lifts here. Each county goes to its nearest rack market with terminals; a market within 1.5 times that distance (or 25 miles more) shares it, up to 4 markets, weighted toward the closer one and the one with more terminals. Distances are straight-line from the county’s centre. Shares of a county always add to 100%, so the people counted across all markets add back to the U.S. total.
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County State Share here People counted here Gasoline gal/day Diesel gal/day County population Miles
Cerro Gordo County IA 100% 42,372 74,769 34,245 42,372 7
Freeborn County MN 44% 13,494 25,510 14,418 30,440 37
Floyd County IA 72% 10,677 21,416 9,040 14,901 29
Winnebago County IA 100% 10,251 10,100 3,903 10,251 26
Hancock County IA 81% 8,559 12,722 5,437 10,528 20
Worth County IA 100% 7,338 24,363 21,373 7,338 17
Mower County MN 17% 7,108 8,020 3,565 40,971 47
Mitchell County IA 54% 5,780 6,680 2,615 10,650 32
Franklin County IA 49% 4,804 13,902 11,118 9,868 28
Faribault County MN 33% 4,609 7,084 4,255 13,888 48
Butler County IA 32% 4,463 4,400 1,764 14,049 40
Kossuth County IA 29% 4,099 5,951 2,265 14,322 44
Chickasaw County IA 26% 3,057 5,544 2,545 11,663 53
Wright County IA 23% 2,967 4,435 2,231 12,801 34
Hardin County IA 18% 2,950 5,300 2,065 16,455 52
Humboldt County IA 26% 2,429 3,020 1,101 9,409 49
Howard County IA 21% 1,939 2,893 1,170 9,415 54

Fuel demand is an estimate: each state’s taxed gallons for the year (FHWA) are split among its counties by where the driving happens (EPA county vehicle miles, weighted by how much fuel each vehicle type burns), then shared to markets as above. Every state adds back to its FHWA total. Gasoline includes the ethanol blended into it; diesel is FHWA’s special fuels. Expect diesel to be least reliable along long-haul corridors, where trucks buy fuel in one county and burn it in another. Population: U.S. Census Bureau county estimates.

Cost to serve this market by pipeline

¢/gal · cheapest gasoline · from Minneapolis on Magellan Midstream
4.22
¢/gal · cheapest diesel · from Minneapolis on Magellan Midstream
4.22
¢/gal · cheapest jet fuel · from Wynnewood, OK / Ardmore, OK on Magellan Midstream
13.26
Published line-haul rates into a terminal here, cheapest first (8 of 8 routes). Add the origin spot price for a delivered cost; compare that with the rack price for the netback. Not included: terminal throughput and rack fees, and the 10 conditional tariff fees listed on each pipeline page.
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Origin Pipeline Delivery point Product ¢/bbl ¢/gal Refineries at the origin Tariff
Minneapolis (Pine Bend/St Paul Park/Roseville/Rosemount) Magellan Midstream Mason City, IA gasoline, distillate 177.28 4.22 Flint Hills Resources Pine Bend Refinery FERC No. 160.59.0 item 205
Superior, WI Magellan Midstream Mason City, IA gasoline, distillate 352.00 8.38 Cenovus Superior Refinery FERC No. 160.59.0 item 206
Oklahoma Central (Ponca City) Magellan Midstream Mason City, IA gasoline, distillate 443.84 10.57 Phillips 66 Ponca City Refinery FERC No. 160.59.0 item 200
Kansas (Coffeyville/El Dorado/Kansas City Jct.) Magellan Midstream Mason City, IA gasoline, distillate 443.84 10.57 HF Sinclair El Dorado Refinery FERC No. 160.59.0 item 201
McPherson, KS Magellan Midstream Mason City, IA gasoline, distillate 465.95 11.09 CHS McPherson Refinery FERC No. 160.59.0 item 255
Wichita - Kansas City Interconnect (Phillips 66 Carrier) Magellan Midstream Mason City, IA gasoline, distillate 524.83 12.50 FERC No. 160.59.0 item 240
Wynnewood, OK Magellan Midstream Mason City, IA gasoline, distillate 527.13 12.55 CVR Wynnewood Refinery FERC No. 160.59.0 item 204
Wynnewood, OK / Ardmore, OK (Valero Partners Wynnewood) Magellan Midstream Mason City, IA gasoline, distillate, jet fuel 557.07 13.26 Valero Ardmore Refinery; CVR Wynnewood Refinery FERC No. 197.9.0 item 200

Supply resilience

pipeline supply
One pipeline
pipeline systems delivering
1
terminals on two or more pipelines
0
terminals with no pipeline tariff
0

One pipeline system delivers here: Magellan Midstream. An outage on it leaves the market to truck, rail or water.

If a pipeline system goes down

Pipeline system Terminals it reaches here With no other pipeline Which
Magellan Midstream 1 1 Magellan Pipeline Company - Mason City

Counts pipeline systems with a tariff delivery point here, not capacity, storage or contracts. A system with two lines into the market still counts once, and a terminal with one pipeline may also receive by truck, rail or water. For a refinery or pipeline outage across every market it touches, open that facility’s page.

Delivered ethanol cost

¢/gal over Chicago ethanol · lowest in the market
-10.10
¢/gal over Chicago ethanol · highest
-10.10

An estimate for each terminal: the cheapest of published rail rates and trucking from the nearest plants, plus basis, transload, terminaling and carrying cost. Each terminal page shows the build-up line by line.

Terminal ¢/gal over Chicago By From Miles
Magellan Pipeline Company - Mason City -10.10 truck Golden Grain Energy LLC (Mason City, IA) 8

Nearby rack markets

Rack markets within 75 miles (straight line): where a buyer here could also lift.

Rack market Miles Terminals Pipelines
Ft. Dodge, IA 52 1 —
Waterloo, IA 68 1 1
Rochester, MN 72 2 1

Rates are pipeline line-haul transcribed from published FERC tariffs; every figure cites its tariff and item. Cost to serve (netback) adds origin spot price and destination fees. "Confirmed" links match a tariff delivery point to the facility; "same city" means the point is in the facility's city — plausible, not proof; "per research" means the facility's research profile names the pipeline as an outlet.