Gas Prices in Fort Collins, CO Today
Fort Collins drivers are paying around $3.60 per gallon for regular unleaded as of late March 2026 — right at the Colorado state average, which itself runs about 30 cents below the national average. That's a reasonable position for a Northern Colorado city of 170,000 that sits 65 miles north of Denver's Suncor refinery in Commerce City. The supply chain is slightly longer than Denver's, but not long enough to meaningfully push prices up.
Why Fort Collins Prices Track Denver Closely
Colorado's 22-cent gas tax is one of the lower rates in the country, and Fort Collins benefits from the same tax floor as the rest of the state. Supply-wise, fuel reaches Fort Collins via pipeline and truck delivery from the Denver metro distribution terminals — a straightforward run up I-25 that doesn't add significant cost.
What keeps Fort Collins from being cheaper than Denver is the absence of a Costco inside city limits. The nearest Costco is in Loveland (about 12 miles south) — a meaningful draw for price-conscious drivers willing to make the trip, but not a price anchor for the Fort Collins market itself. Without that warehouse club anchor, Fort Collins stations don't face the same downward pressure on everyday pricing that Costco routinely applies in markets where it operates.
CSU's 35,000-student enrollment creates a large population of budget-conscious drivers who keep demand for lower-price options real — which is why stations along South College Avenue tend to compete actively, while those in the Old Town area and on Prospect Road charge a modest premium.
Where to Find the Cheapest Gas in Fort Collins
Price competition is strongest along South College Avenue and near the Harmony Road retail corridor in the southern part of the city.
Search by ZIP:
- Old Town / North Fort Collins — 80521 — limited station options, expect slightly higher prices
- University / Midtown — 80524 — South College Ave corridor, competitive pricing near CSU
- South Fort Collins — 80525 — Harmony Road anchor retail, best competition in the city
- Southwest — 84526 — mixed residential and commercial, moderate pricing
- Timnath / Southeast edge — 80528 — newer development area, fewer stations; head to 80525 for best prices
- Navigating to the cheapest station is easier with a phone mount — hands-free directions while you drive.
- A tire pressure gauge is one of the cheapest ways to improve fuel economy — underinflated tires cost you up to 3% at the pump.
The Loveland Run
If you're not in a hurry, the 12-mile drive down US-287 or I-25 to Loveland's Costco is the move for a big fill-up. Loveland consistently runs 15–25 cents below average Fort Collins prices, and the Costco there is among the cheapest in Northern Colorado. For a 15-gallon tank, that's a potential $3–4 savings — enough to justify the trip on a weekend errand run.
Spring and Summer Pricing in Northern Colorado
Fort Collins sees a predictable price bump in late April and May when stations switch to the summer reformulated fuel blend required by Colorado environmental rules. The transition typically adds 8–12 cents per gallon and lasts 2–3 weeks. Fill up before that transition hits if you can time it — late March through mid-April is typically the best window for Northern Colorado gas prices before summer blend costs kick in.
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