The best place to get accurate zip code is from the US Postal Service website.
There is not just one zip code for each state. Large cities have several zip codes and even small towns may have more than one zip code. Go to www.zip-codes.com and type in the address you are sending to and it will tell you the zip code.
76540 through 76549If you have the actual street adress you can find out for sure at usps.com