Zip code data that populates the city and county.

I want to be able to have a user enter a ZIP CODE into cell G4 on a sheet titled DEMOGRAPHICS that will populate cell F4 with the correct CITY and H4 with the correct COUNTY. I figure I may have to enter the correct city and county for each zip code on a sheet I've entitled DATA and then have the formula pull the data from there. I was going to enter all the data from this URL http://www.zipcodestogo.com/Florida/ on the sheet I've entitled DATA but I want to know if this type of formula is even possible first.

Thank you for all input!

Thank you so much! One more question to complete this. I have this formula in F4 =VLOOKUP($G4,Data!B5:D1476,2) and this formula in H4 =VLOOKUP($G4,Data!B5:D1476,3) returning the correct values for the data I enter in G4. How do I modify these formulas to return a blank cell instead of #N/A in cloumns F and H when there is no value entered in colum G? Thank you!

I used this: =IF($G4="","",VLOOKUP($G4,Data!B5:D1476,2)) THANK YOU BOTH AGAIN SO MUCH!!!