looking for son's ward in Texas so he can attend

My son [edited] lives in Dallas, Texas and wants to attend his ward there but does not know which ward he belongs to and where to get his membership # so he can log onto the ward web site. How can he get this information. My husband and I both have our membership #'s. Can we get this information on the LDS. org site. Membership # [edited].

I removed the above name & membership number for privacy purposes.

If you type his address into maps.lds.org, you can find his home ward and get the bishop's contact information. If you just need his membership number, and he's your biological son, your own ward clerk might be able to help you get that.