Filter owners list by distance using zip code or city

[Billy Rogers]

A lot of people recommend marketing to out of state owners which is something I'm doing.  However I live in Texas and you can drive over 800 miles and still be in the state.   This makes me think that there may be some potential in marketing to owners that are a good distance from the property but still in state.  

I have Microsoft Access and Excel and am proficient in both.  I don't know of a way to build a query or filter the list based on distance.  Does anyone know of a way to do this.  Say all owners more than 150 miles from the county the property is in?  I'm currently only targeting properties one county.