There are 535 voting members of the United States Congress: 435 representatives in the House and 100 senators in the Senate. In addition, there are 6 non-voting delegates in the House (from D.C. and U.S. territories) and 1 non-voting resident commissioner from Puerto Rico, bringing total members in the Congress (including non-voting) to 542 (House non-voting + Senate + House voting). Note that vacancies can occur from time to time; as of certain dates there may be a few vacancies in the House, but the standard counting for a full congressional session is 535 voting members. For the 119th Congress that began in 2025, the voting membership tracked as 213-219-435 in the House with 2 vacancies reported at times, while the Senate maintained its 100 voting members. If you’re asking about a specific moment in 2025, tell me the date and I’ll confirm the exact count for that day.