I just moved from Maryland to up by York. I was in Harford County for the previous 4-5 years and Baltimore City for about 15 years before that.

The main reason was that properties are considerably cheaper and I wanted a fairly small house on a fairly decent amount of land, which is more common here. I work from home, but wanted to stay within about an hour of Baltimore so I was still fairly close to friends and family. The school taxes can absolutely murder you in some areas, so you have to watch out for that. But the income tax was like 3.5% less than an unincorporated part of Harford County. I make enough that the lower income tax covers all my property taxes and leaves me with about $500 extra a year.