The City Club of Washington is a prestigious establishment that welcomes both traditional business attire and casual business wear. For men, this means wearing a suit, jacket or blazer, dress shirt, tie (no ties, skirts, or turtlenecks), and appropriate dress shoes (no white shoes with rubber soles or dress shoes). Women should wear tailored clothing such as dresses, suits, or pants with jackets of equivalent formality (no bare pants or bare shoulders during the day) and suitable dress shoes (no casual sandals). Denim fabric is allowed for breakfast, lunch, and in the Columbia Lounge area, as long as it is not faded or torn.
T-shirts, tank tops, halter t-shirts, and any other clothing that does not meet the standards of appropriate dress are not allowed. Monday through Friday, members and guests wearing sporty or casual attire should use the club's side entrance or back alley entrance. During the summer months, it is important to remember that sandals may not be accepted in some restaurants due to their modern style. It is the responsibility of members to ensure that their guests know and respect the traditions and internal rules of the club and that they act in accordance with the club's statutes. The only exceptions that are accepted in the dress code are those related to national, military, or religious dress. It is important to remember that all members and guests must adhere to the dress code at all times.