 kewaunee county is a county located in the u.s. state of wisconsin. as of the 2010 census, the population was 20,574. its county seat is kewaunee. kewaunee county is part of the green bay, wi metropolitan statistical area as well as the green bay-shawano, wi combined statistical area. ==geography== according to the u.s. census bureau, the county has a total area of , of which  is land and  (68.4%) is water. ===adjacent counties=== *door county - north *manitowoc county - south *brown county - west *benzie county, michigan - northeast *manistee county, michigan - southeast ===major highways=== *20px highway 29 (wisconsin) *20px highway 42 (wisconsin) *20px highway 54 (wisconsin) *20px highway 57 (wisconsin) ==demographics== thumb|left|2000 census age pyramid for kewaunee county {{uscensuspop |1860=5530 |1870=10128 |1880=15807 |1890=16153 | 1900= 17212 | 1910= 16784 | 1920= 16091 | 1930= 16037 | 1940= 16680 | 1950= 17366 | 1960= 18282 | 1970= 18961 | 1980= 19539 | 1990= 18878 | 2000= 20187 | 2010= 20574 | estimate=20624 | estyear=2012 |footnote=u.s. decennial census1790-1960 1900-1990{{cite web|url=http://www.cens
Green_Bay_metropolitan_area Kewaunee_County,_Wisconsin Wisconsin_counties