North–south streets are numbered, and east–west streets are named. However, north–south streets east of 1st Street are named, like east–west streets. The north–south numbering line is along the Menomonee River (east of Hawley Road) and Fairview Avenue/Golfview Parkway (west of Hawley Road), with the east–west numbering line defined along 1st Street (north of Oklahoma Avenue) and Chase/Howell Avenue (south of Oklahoma Avenue). This numbering system is also used to the north by Mequon in Ozaukee County, and by some Waukesha County communities.