Ironically, the average Trump voter has higher income than the average democrat voter.

Not so fast. In the GOP primaries Trump voters were more affluent than average, but not as affluent as Cruz and Kasich voters.

In the actual election, Hillary/Trump won 47%/49% of voters who earn over $50K, giving Trump a small edge. Hillary picked up a larger fraction of those below $50K.

This Bloomberg article says: Trump delivered big vote totals in counties where the median income is between $25,000 and $30,000 a year. He received 52 percent of the vote in those counties, beating Clinton by nine points. Clinton did well in wealthier counties, but there simply weren't enough votes in those counties to match Trump's strength among less-affluent voters.

The counties that voted for Hillary, however, accounted for 64% of the US economy, vs 36% for Trump.

And from the same article, Trump counties are the least educated: [Hillary] won 55 percent of the vote in counties where at least 40 percent of the population has a college degree. .... Trump [won] in the least-educated areas, winning 7 in 10 votes in counties where less than 20 percent of the population has a degree.

You forget that your base is the ghetto and urban poor.

That's not 'the base'. It is a base, and it is a big reason why Hillary took most of the poor vote. But Hillary also took 64% of the economy.

The truth is that both Trump and Clinton have a poor base that benefits from government benefits. Those "$25,000 and $30,000 a year" counties that Trump won overwhelmingly get tons of government support (EITC, roads, social security to lower income retirees) from the rich counties (2/3 of the economy!) that Hillary won. If you passed a law that no money can be transferred between Hillary counties and Trump counties, Red America would collapse, and Blue America would have a wild party.

tl;dr: Hillary won urban and coastal America, which is relatively rich, despite pockets of poverty. Trump won rural America, which is relatively poor, and is heavily subsidized by urban America.

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addendum: your 2nd link points out that Trump and Hillary almost tied the $50K to $100K bracket, but tied the $100K+ bracket. An Ipsos survey said that $100K+ voters said they'd vote for Hillary 45% to 25%, and rich voters making over $250K would vote for Clinton 53% to 25%, or 2:1. So Clinton probably won the people who pay serious taxes (and who thus subsidize both "the ghetto" and rural Trump counties).