Gas prices in Minnesota have continued to fall over the past week, with the average retail cost of regular unleaded in the state now at $3.66 a gallon. That comes after a drop of more than 7-cents over the past week, but the price began to rise again on Monday. The national average had only fallen by about 3-cents over the same time period, but it is now at $3.67 a gallon. The cheapest gas in Minnesota over the past 24 hours was $3.43 a gallon in Coon Rapids. The most expensive gas in our state can be found in Brooklyn Center, where it was selling for $3.99 a gallon. In New Ulm regular unleaded is currently selling for $3.69 a gallon.