What are some neurologial problems that could be causing my frequent urination other than stress and anxiety?

Multiple causes. Difficult question - most problems of frequent urination are not caused by neurological causes - overactive bladder (oab) - is a general problem with multiple causes - in men this is often due to enlarged prostate, decreased size of bladder, urinary tract infections. Women can have interstitial cystitis, prolapsed uterus, etc. Get an initial eval by your fp to r/o infection - then urologist eval.
Many causes. Many neurologic conditions can cause frequent urination, but this is more likely difficulty urinating and small volumes. More common are infections, dropped bladder in women and enlarged prostate in men. Also side effects of medication and caffeine and alcohol.

Related Questions

What are some neurologial problems that could be causing my frequent urination other than stress and anxiety?

Frequency. Nph, neurogenic bladder, ms, cauda equina syndrome, etc...There's much more to mention. These have other symptoms associated with it and these are less common.
Prolapsed vertebral. Disc, multiple sclerosis, spinal cord or brain tumor, cerebral palsy, neuritis, neuroma. These are all relatively uncommon and usually have some other associated symptoms.