I can only speak of the areas of Texas I have lived in. When I lived in different towns in Anderson county, there were no distinct Muslim communities. In those towns the Muslim Population was well spread out and integrated into the various communitites. There was no visible way of telling where any Muslims lived. The local Mosques quite often had almost as many curious onlookers as Muslims in them. Many of the Muslims in Anderson county were reverts, so the Mosques were very racialy mixed.
Here in Austin the majority of the Muslims are from Pakistan. Us reverts account for perhaps 10% of the Muslim Population. However, there are no truly Muslim communities except for a small number of apartment complex's. The apartment complex's in Austin are quite expensive so the only Muslims I personaly know that live in the Apartment complex I live in are predominatly professional people and business owners. They are highly respected in the General population. Many Doctors, Scientists and College professors here are Muslim. the income of the average Muslim is well above the income of the general population and most Muslims are treated with much respect.