"Urban area" means an area including and adjacent to a municipality and other urban centers having a population of 5,000 or more as determined by the latest available federal census or such other population estimates as may be provided by law within boundaries [...]

"Urban area" means an area included within the boundaries of an incorporated municipality having a population of 5,000 or more as determined by the latest available federal census and any area adjacent to such municipality, provided that such adjacent area is [...]