Effectively owns Metropolis. The Supreme Court has ruled that he cannot legally own more than 49% of Metropolis real estate. He legally owns 49%, and illegally or indirectly owns an additional 30%.
His company, Lexcorp, runs everything. From the water, to the power, to the police. Metropolis has never been more well off financially speaking. However, crime rates are much higher than when Superman was around. Tourism has also fallen drastically, though more people seem willing to commute to Metropolis these days (less chance of having a seven ton, super powered behemoth thrown through your office window).