There is an item "DIST" with a number under it. This signifies what congressional District you are in. Or, you can call your county Voter Registration and ask.
For example, I'm in the new 25th district (Travis County.) Formerly, I was in District 10.
So my Voter Registration card notes my new District on it, appearing something like this...
DIST
25
OR...
use this handy site:
http://www.sos.state.tx.us/elections/voter/district.shtmlJust in case the link don't work, the last part of this should be /district.shtml
The paragraph below this one is what you get if you click the above link. The "Find Your Incumbent" is a hyperlink on the actual page. When you click it, it will ask you to enter your street address and Submit. It will then tell you what district you are in...pick "Congressional" from the drop-down list of "district type" before hitting Submit. i hope this is of assistance to you!!
What's my District?
Want to know in which Congressional District or Legislative District you live? This information is located at the bottom of your voter registration certificate. You may also find this information by entering your street address on the "Find Your Incumbent" form located on the Texas Legislature Online website.