I am in the Dallas/Fort Worth area, so I cannot speak for all areas of Texas. In the DFW area, LVNs are primarily found in nursing homes, home health, private duty, psychiatric facilities, clinics, doctors offices, group homes, and LTAC facilities. Not many LVNs can be found in major hospitals around here unless you travel to the outlying areas such as Weatherford, etc.
I work at a rehab hospital that still utilizes LVNs, although the pay is very low. The rehab hospital where I work pays LVNs in the $18 hourly range, while a nursing home or home health agency will pay an LVN between $19 and $25 hourly. The LTAC hospitals around here (Kindred, Lifecare, Regency, Vibra, etc.) also still utilize LVNs on a limited basis.