The following is a profile of the 115 th Congress (2017-2018). Party Breakdown

In the 115 th Congress, the current party alignments as of December 20, 2018, are as follows:
House of Representatives: 238 Republicans (including 1 Delegate and the Resident Commissioner of Puerto Rico), 201 Democrats (including 4 Delegates), and 2 vacant seats. Senate: 51 Republicans, 47 Democrats, and 2 Independents, who both caucus with the Democrats. Age

The average age of Members of the 115 th Congress is among the highest of any Congress in recent U.S. history. Congressional Service

The average length of service for Representatives at the beginning of the 115 th Congress was 9.4 years (4.7 House terms); for Senators, 10.1 years (1.7 Senate terms). Statistics gathered by the Pew Research Center on Religion and Public Life, which studies the religious affiliation of Members, and CQ at the beginning of the 115 th Congress showed the following:
55.9% of the Members (241 in the House, 58 in the Senate) are Protestant, with Baptist as the most represented denomination, followed by Methodist; 31.4% of the Members (144 in the House, 24 in the Senate) are Catholic; 5.6% of the Members (22 in the House, 8 in the Senate) are Jewish; 2.4% of the Members (7 in the House, 6 in the Senate) are Mormon (Church of Jesus Christ of Latter-day Saints); 3 Members (2 in the House, 1 in the Senate) are Buddhist, 2 House Members are Muslim, and 3 House Members are Hindu; and other religious affiliations represented include Greek Orthodox, Pentecostal Christian, Unitarian Universalist, and Christian Science. Twenty-one African American women, including two Delegates, serve in the House, and one serves in the Senate. Hispanic/Latino American Members

There are 46 Hispanic or Latino Members in the 115 th Congress, 8.5% of the total membership and a record number. Ten are women, including the Resident Commissioner. American Indian Members

There are two American Indian (Native American) Members of the 115 th Congress; both are Republican Members of the House.
This report presents a profile of the membership of the 115th Congress (2017-2018) as of December 20, 2018. Statistical information is included on selected characteristics of Members, including data on party affiliation, average age, occupation, education, length of congressional service, religious affiliation, gender, ethnicity, foreign births, and military service.
In the House of Representatives, there are 238 Republicans (including 1 Delegate and the Resident Commissioner of Puerto Rico), 201 Democrats (including 4 Delegates), and 5 vacant seats. The Senate has 51 Republicans, 47 Democrats, and 2 Independents, who both caucus with the Democrats.
The average age of Members of the House at the beginning of the 115th Congress was 57.8 years; of Senators, 61.8 years, among the oldest in U.S. history. The overwhelming majority of Members of Congress have a college education. The dominant professions of Members are public service/politics, business, and law. Most Members identify as Christians, and Protestants collectively constitute the majority religious affiliation. Roman Catholics account for the largest single religious denomination, and numerous other affiliations are represented, including Jewish, Mormon, Buddhist, Muslim, Hindu, Greek Orthodox, Pentecostal Christian, Unitarian Universalist, and Christian Science.
The average length of service for Representatives at the beginning of the 115th Congress was 9.4 years (4.7 House terms); for Senators, 10.1 years (1.7 Senate terms).
One hundred fifteen women (a record number) serve in the 115th Congress: 92 in the House, including 5 Delegates and the Resident Commissioner, and 23 in the Senate. There are 49 African American Members of the House and 3 in the Senate. This House number includes two Delegates. There are 46 Hispanic or Latino Members (a record number) serving: 41 in the House, including 1 Delegate and the Resident Commissioner, and 5 in the Senate. Eighteen Members (13 Representatives, 2 Delegates, and 3 Senators) are Asian Americans, Indian Americans, or Pacific Islander Americans. This is also a record number. Two American Indians (Native Americans) serve in the House.
The portions of this report covering political party affiliation, gender, ethnicity, and vacant seats will be updated as events warrant. The remainder of the report will not be updated.