It’s no Silicon Valley yet, but when it comes to attracting entrepreneurs, Tampa Bay is beginning to look more attractive. Tampa ranked No. 34 on Business.org’s recently released list of top 40 US cities for entrepreneurs. "If you’re an entrepreneur looking to launch your own start-up, you’re no longer limited to Silicon Valley, the Silicon Prairie or any of the other ‘Silicon’ locales established a decade ago," the rankings said.The cities were graded based on the number of residents aged 25 to 34, the proportion of people in that age group with college and advanced degrees, local unemployment rate and housing affordability. Four Florida cities made the rankings, including Jacksonville at No. 28, Orlando at No. 31 and Miami at No. 39. Contact this reporter at [email protected] or (727) 892-2249. Follow @malenacarollo.