simple past tense and past participle of unincorporate
"The council voted to unincorporate the town after residents failed to meet the population requirements for city status."
not organized and maintained as a legal corporation
"The residents of that unincorporated area rely on county services rather than having their own local city government."
Not organized as a corporation.
"The city council voted to dissolve the unincorporated business that had been operating without legal incorporation for years."