I am pummeled, both in my personal email and my work email with attorneys and safety organizations (I run the worker's comp desk) and healthcare organizations and the like... all giving me the CDC guidelines.
Why? I'm within 250 miles of Dade and Broward counties the area of first incursion for Zika.
This map is close to accurate in demonstrating the areas where the Aedes aegypti mosquito is known in the U.S.
You will probably not have to worry above the far southeast and outside of Arizona in the west.
We are likely to see some action on Florida's west coast. I'm risk adverse in my job, so my early emails asking us to think about purchasing mosquito repellant for our employees outdoors (home health and home hospice... 80% of our employee population)to get them to start taking precautions BEFORE the virus spreads west...they've pretty much fallen on deaf ears. I have three pregnant moms on my leave of absence slate this summer. I'm worried for them, too.

But if you do want to lay some odds, I have the week of August 30th in the office pool for when Zika arrives in Hillsborough county. Just send me your bets and I'll make the pool bigger. Prize is a mobile mosquito netting poncho ...very fetching.
quid