ZIP Code 21104 is within two congressional districts: the 2nd US Congressional District of Maryland currently represented by Democrat John Olszewski Jr. and the 3rd US Congressional District of Maryland currently represented by Democrat Sarah Elfreth.
The State Legislative body in Maryland is the Maryland General Assembly. It is bicameral, consisting of the upper Maryland Senate and the lower Maryland House of Delegates. ZIP Code 21104 is within 3 different Maryland State House of Delegates districts: