According to the current issue of
Forbes
, Steve Jobs is the 34th richest person in the U.S. and tied for 110th in the world, having climbed 40 spots in the magazine’s annual list of the world’s billionaires.

But where does that wealth come from, and how does it compare with other tech luminaries? Let’s take a deeper look:

• Fun fact No. 1: Jobs’ net worth jumped $2.8 billion (51%) in the space of a year, according to Forbes, from $5.5 billion to $8.3 billion
• Fun fact No. 2: Bill Gates (Forbes #2), Larry Ellison (#5), Larry Page (#24), Sergey Brin (#24), Jeff Bezos (#30), Michael Dell (#44), Steve Ballmer (#46), Mark Zuckerberg (#52) and Paul Allen (#57) are all richer than Jobs, according to Forbes.
• Fun fact No. 3: 96% of Jobs’ wealth comes from securities held in trust. Forbes doesn’t account for the other $284 million, but it’s probably in real estate.
• Fun fact No. 4: 72% of his wealth comes from the 138 million shares of Disney (DIS) he got when he sold Pixar.
• Fun fact No. 5: 24% comes from 5.426 million shares of Apple (AAPL), most from what remains of a 10 million share grant he received in 2003 that was later reduced to pay taxes.
• Fun fact No. 6: In the five weeks since Feb. 14, when Forbes took a snapshot of his wealth, the value of Jobs’ Apple shares have fallen nearly $70 million, while Disney fell more than $106 million.
• Fun fact No. 7: His annual salary at Apple is still $1 a year.

Also on Fortune.com:

• How rich is Steve Jobs today? (3/11/2010)
• The second richest man at the Oscars (3/10/2010)
• Tech’s biggest loser: Bill Gates (10/1/2009)

[Follow Philip Elmer-DeWitt on Twitter @philiped]