Check out Cross Keys Apartments, which offers 1 or 2 bedroom apartments in St. Louis, MO. Off New Halls Ferry in North Saint Louis County, Cross Keys Apartments offers flexible leases; updated, large eat-in kitchens; and vertical blinds, ceiling fans, microwave and dishwasher in select homes. Located in Ferguson-Florissant Schools in a beautiful, park-like setting, Cross Keys is right across the street from several restaurants, pharmacies and stores. Our staff is here to make your experience at Cross Keys the best possible.