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Name High School Grad Year
Mary Orzechowska Tuley High School Class of 1944
Christie Orzechowski Curie High School Class of 1976
Christine Orzechowski St Stanislaus Kostka Class of 1957
Joan Orzechowski St Mary Of Perpetual Help High School Class of 1968
Mary Orzechowski Tuley Class of 1943
Mary Orzechowski Tuley High School Class of 1941
Christine Orzol Madonna High School Class of 1968
Cynthia Os Resurrection High School Class of 1997
Thomas Osaborne Leo High School Class of 1967
Kathleen Osadnik Maria High School Class of 1967
Arline Osberg Tuley High School Class of 1954
Arnold Osberg Lane Tech High School
Charlene Osberg Steinmetz High School Class of 1948
Albert Osborn Hirsch Metropolitan High School
Charles Osborn Fenger Academy High School
Gary Osborn Theodore Roosevelt High School Class of 1979
Jack Osborn Morgan Park High School Class of 1960
Melissa Osborn Lane Tech High School Class of 1998
Taylor Osborn St Rita High School Class of 2008
Thomas Osborn Luther South High School Class of 1963
Anjanette Osborne Near North Career Metro High School Class of 1990
Barbara Osborne Hess Upper Grade Center Class of 1980
Cheryl Osborne Schurz High School Class of 1977
Edward Osborne Wells High School Class of 1965
Eric Osborne South Shore High School Class of 1984
Harriet Osborne Morgan Park High School Class of 1971
James Osborne Fenger Academy High School Class of 1968
Joanne Osborne Bogan High School Class of 1977
John Osborne Marist High School Class of 1974
John Osborne Senn High School Class of 1966
Laurel Osborne Schurz High School Class of 1966
Lori Osborne Chicago Public High School For Metropolitan Studies (Metro) Class of 1971
Mahongany Osborne South Shore High School Class of 2002
Mary Osborne Parkside Elementry Class of 1960
Ray Osborne Senn High School Class of 1962
Raymond Osborne Senn High School Class of 1963
Thomas Osborne Leo High School Class of 1967
Veronica Osborne Siena High School Class of 1971
Ray Osbourne Senn High School Class of 1963
Tiffany Osby Simeon Career Academy Class of 1999
Willie Osby Hirsch Metropolitan High School Class of 1986
Castellanos Oscar Juarez High School Class of 2006
Martinez Oscar Sullivan High School
Peter Oscick Gage Park High School Class of 1995
Karen Osdol Morgan Park High School Class of 1961
Ron Ose Lane Tech High School
Ron Ose Lane Technical High School
Ron Ose Lane Tech High School
Tamara ose Steinmetz High School Class of 1982
Tammy ose Steinmetz High School Class of 1982
Jessica Osecki Josephinum High School Class of 1971
Roberto Oseguer Benito Juarez High School
Jose Oseguera Benito Juarez High School
Maggalee Oseguera Bowen High School Class of 2011
Roberto Oseguera Benito Juarez High School
Thelma Oseguera Bowen High School Class of 1970
Carol Osenga Fenger Academy High School Class of 1948
Donna Osentino Bogan High School Class of 1967
Milayne Osgood Alvernia High School Class of 1967
Leroy Osguard Tuley High School
Jacob Oshaben La Salle Extension University Class of 1966
Sharon Oshan Senn High School Class of 1959
Marie Oshana Roosevelt High School Class of 1970
Raymond Oshana Von Steuben High School Class of 2002
James Oshaughnessy Curie High School Class of 1976
Jeff Oshaughnessy Marist High School Class of 1989
Nancy Oshe Fenger Academy High School Class of 1968
Annabelle OShea Maria High School
Anne Oshea Mother Mcauley Lib Arts High School Class of 1984
Connie OShea Amundsen High School Class of 1950
Dan Oshea Mount Carmel High School Class of 1997
Eileen Oshea St Marys Center For Learning High School
John Oshea Brother Rice High School Class of 1983
Kevin OShea De La Salle Institute School
Michael Oshea Kennedy High School Class of 1990
Patricia OShea Aquinas Dominican High School Class of 1970
Patrick Oshea St Benedict High School Class of 1964
Peggy Oshea St Catherine Of Siena High School Class of 1950
Martin Osheff Amundsen High School Class of 1967
Marty Osheff Amundsen High School
Tomohiko Oshikawa Lane Tech High School Class of 1988
Diane Oshima Amundsen High School
Lisa Oshima Amundsen High School
Terri Oshiro Mather High School Class of 1980
Judy Oshita Amundsen High School Class of 1973
Deborah Osiecki Josephinum High School Class of 1970
Carol Osiel Madonna High School Class of 1978
Arline Osifchin Gage Park High School Class of 1963
Karen Osifichin Kelly High School Class of 1975
Judith Osika Tuley High School Class of 1954
Lorraine Osimowicz Tuley High School Class of 1960
David Osinski Theodore Roosevelt High School Class of 1988
Diane Osinskis Bowen High School
Germaine Osiol Notre Dame High School For Girls Class of 1958
Katherine Osirio Kennedy High School
John Osko Taft High School Class of 1952
Martina Oskroba Taft High School Class of 1965
Cecilia Oskvarek Lourdes High School Class of 1970
Ceil Oskvarek Lourdes High School Class of 1970
Rose Oskvarek Harrison Technical High School Class of 1955
Mark Osleber Luther North High School Class of 1991
Joshua Osley Von Steuben High School Class of 2013
Dave Osman Lane Tech High School Class of 1978
Dawn Osmanski Madonna High School Class of 1982
Pamela Osmanski Madonna High School
Stephanie Osmanski Lourdes High School
Diane Osmolak Taft High School Class of 1962
Carol Osoba Lourdes High School
Sharon Osoba Lourdes High School
Isaac Osobu Senn High School Class of 1997
Anthony Osorio Foreman High School Class of 2006
Jenny Osorio Roberto Clemente High School Class of 1978
Jesus Osorio Edward Tilden High School Class of 2011
Julio Osorio Kelvyn Park High School Class of 2003
Lissette Osorio Wells High School Class of 1991
Margarita Osorio Schurz High School Class of 2001
Raul Osorio Wells High School Class of 1997
Rufino Osorio Holy Name Cathedral Class of 1973
Mike Osowski Archbishop Weber High School Class of 1975
Arlin Ospina Amundsen High School Class of 1991
Carolina Ospina Foreman High School
Lionel Osselyn South Shore High School Class of 1971
Barbara Osser Ida Crown Jewish Academy
Lawrence Ostapowicz Kelly High School
Karen Ostby Roosevelt High School Class of 1964
Cindy Osteber Luther North High School Class of 1988
Lahoma Osteen Hyde Park Academy High School Class of 1987
Tyrone Osten Senn High School Class of 1996
Diane Ostendorf Luther North High School Class of 1973
Robert Ostensen Fenger Academy High School Class of 1960
Howard Oster Mather High School Class of 1987
John Oster Lane Tech High School
Melvin Oster Hirsch Metropolitan High School Class of 1960
Melvin Oster Hirsch Metro High School Class of 1960
Peter Oster Mather High School
Terri Ostergren Kelvyn Park High School Class of 1968
Gordon Osterhaus Quigley Prep Seminary South Class of 1967
Wally Osterkorn Amundsen High School
Marko Osterling Lane Tech High School Class of 1987
Nancy Osterling Aquinas Dominican High School Class of 1958
Claude Ostfeld Bateman High School Class of 1965
Craig Ostfeld Schurz High School Class of 1962
Steven Ostioch Mount Carmel High School Class of 1969
Delena Ostmaternowski Resurrection High School Class of 1968
Steve Ostoich Mount Carmel High School Class of 1969
Steven Ostoich Mount Carmel High School Class of 1969
Lawrence Ostopowicz Kelly High School
Susan Ostovsky South Shore High School Class of 1963
Te Ostr Quigley Prep Seminary South
Ted Ostr Quigley Prep Seminary South Class of 1971
Ernst Ostrand Amundsen High School Class of 1960
Teresa Ostria La Salle Extension University Class of 1976
Paul Ostrof Mather High School Class of 1964
Robert Ostroga Archbishop Weber High School Class of 1966
Allison Ostrom Kelly High School Class of 1981
Donald Ostrom Kelly High School Class of 1976
Dorothy Ostrow Von Steuben High School Class of 1939
Caroline Ostrowski Kennedy High School
Casey Ostrowski William J Bogan High School
Dale Ostrowski Gage Park High School Class of 1975
Geraldine Ostrowski Madonna High School Class of 1939
Helen Ostrowski Good Counsel High School
Irene Ostrowski Bogan High School Class of 1969
James Ostrowski La Salle Extension University Class of 1970
James Ostrowski Wells High School Class of 1967
Jim Ostrowski Brother Rice High School Class of 1981
John Ostrowski Morgan Park High School Class of 1947
Judy Ostrowski St Willibrord Catholic High School
Margaret Ostrowski Madonna High School Class of 1981
Mary Ostrowski St Casimir High School
Richard Ostrowski Prosser High School Class of 1980
Rosanne Ostrowski Kelly High School
Stan Ostrowski Good Counsel High School
Stanley Ostrowski Good Counsel High School
Ted Ostrowski Quigley Prep Seminary South
Nancy Ostrowsky Gage Park High School
Carol Ostruska Steinmetz High School
Lee Ostruska Steinmetz High School Class of 1971
Paul Ostruzka Weber High School Class of 1966
Ronald Osucha Taft High School Class of 1951
Anne Osullivan Amundsen High School
Catherine Osullivan Academy Of Our Lady Chicago Class of 1962
Eileen Osullivan Aquinas Dominican High School
Gerald OSullivan St Rita High School
Jane OSullivan Resurrection High School Class of 1962
Joseph OSullivan Mount Carmel High School Class of 1953
Joseph OSullivan Brother Rice High School Class of 1960
Kelly OSullivan Bogan High School Class of 1988
Martin Osullivan St Ethelreda High School Class of 1960
Mary OSullivan Lourdes High School Class of 1966
Michael OSullivan Marist High School Class of 1990
Arlene Osunia Lake View High School
Charles Oswald Bogan High School Class of 1981
Ken Oswald Amundsen High School Class of 1967
Larry Oswald Hubbard High School Class of 1976
Laura Oswald Lourdes High School Class of 1983
Lisa Oswald Maria High School Class of 1986
Lynn Oswald Bogan High School Class of 1977
Mary Oswald Longwood Academy Class of 1959
MaryLou Oswald Longwood Academy Class of 1959
Nicholas Oswald Marist High School Class of 1996
Ozzie Oswald Lane Tech High School Class of 1960
Wayne Oswald Von Steuben High School Class of 1955
William Oswald Lane Tech High School Class of 1952
Dixie Oswalt Farragut High School Class of 1955
Richard Oswalt Lane Tech High School Class of 1977
Mary Oswego Good Counsel High School
Allan Osysko Weber High School Class of 1959
Jeannette Osysko Angel Guardian Orphanage
Karen Otahal Kelvyn Park High School Class of 1973
Andrew Otano Lake View High School Class of 2001
Nick Otched Luther North High School Class of 1996
Christine Otero Roosevelt High School Class of 1992
Jesus Otero Roberto Clemente High School Class of 1989
Jos Otero St Augustine School Class of 1976
Jose Otero La Salle Extension University Class of 1977
Jose Otero Amundsen High School Class of 1990
Lisa Otero St Benedict High School
Marisol Otero Kelly High School
Mildred Otero Foreman High School Class of 1985
Victor Otero Senn High School Class of 1976
Rema Othman Gage Park High School Class of 1995
Taher Othman Bogan High School Class of 1988
Anthony Otis R T Crane High School Class of 1981
Anthony Otis Crane High School Class of 1983
Donny Otis Schurz High School Class of 1995
Jalisa Otis Gage Park High School Class of 2007
Tabatha Otis John Marshall High School Class of 1986
Susan Otomo Senn High School
Gerard Otoole Quigley Prep Seminary South Class of 1976
John Otoole St Rita High School Class of 1946
Kathleen Otoole Sacred Heart High School Class of 1967
Kevin Otoole Curie High School Class of 1978
Margaret Otoole Visitation High School Class of 1968
Martin OToole Lane Tech High School
Mary Otoole Bogan High School Class of 1977
Thomas OToole St Gregory High School Class of 1977
Timothy Otoole Schurz High School
Tom Otoole Leo High School Class of 1952
Mary Otowski Gage Park High School Class of 1976
Alice Ott Senn High School Class of 1934

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About Chicago, IL Alumni

The listing of alumni from Chicago, IL includes graduates from 359 schools. To filter results, select a Chicago, IL high school using the links to the right. The Chicago alumni list on this page come from a variety of sources. Clicking one of your friends will give you locations that you can get back in touch with the fellow graduate. To view alumni that graduated in Chicago around your class year, enter your graduation year in the search box at the top of the page. You may also be able to find friends close to your home town. We also have listings for graduates from Cicero, IL, Oakpark, IL, or Berwyn, IL.

Approximately 2,600 of residents in Chicago (9%) are the normal age for attending high school (15-19). Also, around 1,000 Chicago residents (3%) are the average age for high school seniors (18-19). Population stats are from the United States Census Bureau.