This appears to be true: http://www.cdc.gov/zika/vector/range.html

The range shown here includes all of the Southeast and Texas, much of the southern Midwest, and California up to and including the Bay Area.

This is only the range of Aedes aegypti. Whether a particular strain of the mosquito can carry Zika remains to be seen (though quite likely) as Aedes aegypti is very heterogenous.