CREATE TABLE table_22815568_7 (county VARCHAR(255), unemployment_rate VARCHAR(255), market_income_per_capita VARCHAR(255))
In what counties is the unemployment rate 5.8% and the market income per capita is $22,866?
    
SQL: SELECT county FROM table_22815568_7 WHERE unemployment_rate = "5.8%" AND market_income_per_capita = "$22,866"