Oil companies have been drilling successfully for crude in the Andrews area for more than 80 years. However, rising oil prices have caused a recent spike in production.
And, with advances in drilling techniques, oilmen have also been able to tap reserves in West Texas's Permian Basin that they couldn't economically exploit in the past. Now the oilfields produce 20% more oil than three years ago.
From Los Altos, Calif. to Brooklyn, N.Y., these 20 cities had the highest number of home sales exceeding $1 million during the 12 months ended June 30, 2013.