exurb

/ˈɛksɜrb/
noun
  1. A region or community located beyond the suburbs of a city, typically less densely populated and more rural in character.
    • The new shopping center was built in an exurb to serve the growing population there.
    • Living in an exurb means a longer commute to the city, but cleaner air and bigger yards.
    • Many families move to an exurb to enjoy more space and a quieter lifestyle.