The usual suspects. Not too many surprises, I imagine.
Wikipedia says:
Arizona
Ed Pastor (AZ-4, Phoenix)
Raúl Grijalva (AZ-7, Tucson) - Co-Chair
California
Lynn Woolsey (CA-6, Santa Rosa)
George Miller (CA-7, Richmond)
Barbara Lee (CA-9, Oakland)
Pete Stark (CA-13, Fremont)
Janice Hahn (CA-36, San Pedro)
Michael Honda (CA-15, San Jose)
Sam Farr (CA-17, Monterey)
Xavier Becerra (CA-31, Los Angeles)
Judy Chu (CA-32, El Monte)
Karen Bass (CA-33, Baldwin Hills)
Lucille Roybal-Allard (CA-34, Los Angeles)
Maxine Waters (CA-35, Inglewood)
Laura Richardson (CA-37, Long Beach)
Linda Sánchez (CA-39, Lakewood)
Bob Filner (CA-51, San Diego)
Colorado
Jared Polis (CO-02, Boulder)
Connecticut
Rosa DeLauro (CT-3, New Haven)
Florida
Corrine Brown (FL-3, Jacksonville)
Frederica Wilson (FL-17, Miami)
Georgia
Hank Johnson (GA-4, Lithonia)
John Lewis (GA-5, Atlanta)
Hawaii
Mazie Hirono (HI-2, Honolulu)
Illinois
Bobby Rush (IL-1, Chicago)
Jesse Jackson, Jr. (IL-2, Chicago Heights)
Luis Gutierrez (IL-4, Chicago)
Danny Davis (IL-7, Chicago)
Jan Schakowsky (IL-9, Chicago)
Indiana
André Carson (IN-7, Indianapolis)
Iowa
Dave Loebsack (IA-2, Cedar Rapids)
Maine
Chellie Pingree (ME-1, North Haven)
Maryland
Donna Edwards (MD-4, Fort Washington)
Elijah Cummings (MD-7, Baltimore)
Massachusetts
John Olver (MA-1, Amherst)
Jim McGovern (MA-3, Worcester)
Barney Frank (MA-4, Newton)
John Tierney (MA-6, Salem)
Ed Markey (MA-7, Malden)
Mike Capuano (MA-8, Boston)
Michigan
John Conyers (MI-14, Detroit)
Minnesota
Keith Ellison (MN-5, Minneapolis) - Co-Chair
Mississippi
Bennie Thompson (MS-2, Bolton)
Missouri
William Lacy Clay, Jr. (MO-1, St. Louis)
Emanuel Cleaver (MO-5, Kansas City) - Chairman, Congressional Black Caucus
New Jersey
Frank Pallone (NJ-06, Long Branch)
Rush Holt (NJ-12, Hopewell Township)
New Mexico
Ben R. Luján (NM-3, Santa Fe)
New York
Jerry Nadler (NY-8, Manhattan)
Yvette Clarke (NY-11, Brooklyn)
Nydia Velázquez (NY-12, Brooklyn)
Carolyn Maloney (NY-14, Manhattan)
Charles Rangel (NY-15, Harlem)
José Serrano (NY-16, Bronx)
Maurice Hinchey (NY-22, Saugerties)
Louise Slaughter (NY-28, Rochester)
North Carolina
Mel Watt (NC-12, Charlotte)
Ohio
Marcy Kaptur (OH-9, Toledo)
Dennis Kucinich (OH-10, Cleveland)
Marcia Fudge (OH-11, Warrensville Heights)
Oregon
Earl Blumenauer (OR-3, Portland)
Peter DeFazio (OR-4, Eugene)
Pennsylvania
Bob Brady (PA-1, Philadelphia)
Chaka Fattah (PA-2, Philadelphia)
Rhode Island
David Cicilline (RI-1, Providence)
Tennessee
Steve Cohen (TN-9, Memphis)
Texas
Sheila Jackson Lee (TX-18, Houston)
Eddie Bernice Johnson (TX-30, Dallas)
Vermont
Peter Welch (VT-At Large)
Virginia
Jim Moran (VA-8, Alexandria)
Washington
Jim McDermott (WA-7, Seattle)
Wisconsin
Tammy Baldwin (WI-2, Madison)
Gwen Moore (WI-4, Milwaukee)
Non-voting
Donna M. Christensen (Virgin Islands)
Eleanor Holmes Norton (District of Columbia)
Senate members
Bernie Sanders (Vermont)
Former members
Sherrod Brown (OH-13) - Elected to Senate
Roland Burris (IL Senate) - Retired from Congress
Julia Carson (IN-07) - Died in December 2007
Lane Evans (IL-17) - Retired from Congress
Alan Grayson (FL-8) defeated for re-election in 2010
John Hall (NY-19) defeated for re-election in 2010
Phil Hare (IL-17) defeated for re-election in 2010
Carolyn Cheeks Kilpatrick (MI-13) defeated for re-nomination in 2010
Eric Massa (NY-29) - Resigned in March 2010
Cynthia McKinney (GA-4) - Lost Congressional seat to current caucus member Hank Johnson
Major Owens (NY-11) - Retired from Congress
Donald M. Payne (NJ-10) - Died in March 2012
Nancy Pelosi (CA-8) - Left Caucus when Elected House Minority Leader
Hilda Solis (CA-32) - Became Secretary of Labor in 2009
Stephanie Tubbs Jones (OH-11) - Died in 2008
Paul Wellstone (MN Senate) - Died in plane crash in 2002
Robert Wexler (FL-19) - Resigned in January 2010 to become President of the Center for Middle East Peace and Economic Cooperation
Oh, wait -- he wasn't a citizen, that's right.
He was a member of the Communist Parties of Kenya and Indonesia (PKI) instead, I suppose.
NY, MA and CA lead with the most, who wooda ever thunk it? ;o)