Table:
text: Southwestern Indiana
Counties
Counties
IN_No_ County_Name Establishment_Date_SW_Indiana_History_Statehood County_Seat Time_Zone Population_2010_Rank Area_sq_mi_km_2_Rank Twps ZIP_code_Prefixes _of_Boundary_by_water
14 Daviess February 2, 1818 (10) (29) (14) Washington Eastern 32,200 (6) sqmi (km2) (3) 10 475 55%
19 Dubois December 20, 1817 (7) (20) (4) Jasper Eastern 41,889 (3) sqmi (km2) (4) 12 475 24%
26 Gibson April 1, 1813 (2) (8) (T) Princeton Central 33,503 (5) sqmi (km2) (1) 10 475/476 59%
42 Knox June 6, 1790 (1) (1) (T) Vincennes Eastern 38,440 (4) sqmi (km2) (2) 10 475/478 84%
51 Martin January 7, 1820 (11) (33) (18) Shoals Eastern 10,334 (11) sqmi (km2) (10) 6 475 18%

Question: In southwestern Indiana, if Vincennes is the county seat, what is the area in square miles (km 2 ) (rank) ?