Muskego vs. Brookfield   Year Founded: 1964 Population: 24,168 Scouting report: With beautiful lakes (above) within its borders that attract boaters and fishermen, this laid-back community is proud of its rural roots.   Year Founded: 1954 Population: 39,740 Scouting report: Brookfield has become a powerhouse suburb, mixing residential and commercial growth with a ferocity few can match. Brookfield Square and the shops on Bluemound Road are as attractive to outsiders as the beautiful homes and strong schools. Access to major freeways and thoroughfares also make it easy to get in, out and through Brookfield, whether it's heading to the mall or just heading home.