Table:
text: Iowa locations by per capita income
Iowa Counties by Per Capita Income
Iowa Counties by Per Capita Income
County Per_capita_income Median_household_income Median_family_income Population Number_of_households
Delaware $22,578 $47,078 $59,802 17764 7062
Des Moines $22,555 $41,937 $53,946 40325 17003
Franklin $22,507 $44,863 $52,917 10680 4332
Chickasaw $22,447 $41,372 $50,530 12439 5204
Howard $22,417 $46,068 $55,582 9566 3944
Marshall $22,407 $45,232 $55,716 40648 15538
Shelby $22,389 $44,085 $55,523 12167 5085
Wapello $22,376 $40,093 $49,309 35625 14552
Clayton $22,303 $45,873 $53,905 18129 7599
Keokuk $22,088 $42,698 $53,456 10511 4408
Woodbury $22,069 $44,343 $55,957 102172 39052
Davis $21,970 $46,597 $52,855 8753 3201
Ringgold $21,858 $42,336 $51,269 5131 2047
Cass $21,787 $40,820 $48,884 13956 5980
Lyon $21,613 $49,506 $57,348 11581 4442
Mahaska $21,568 $45,025 $57,877 22381 8975
Fayette $21,566 $41,055 $52,627 20880 8634

Question: Among locations in Iowa by Per Capita Income, Which Population Has Median Family Income of $53,946?