| Year | Title | Role | Notes |
| 1954–60 | Father Knows Best | Betty Anderson | Main role |
| 1955 | Lux Video Theatre | Helen Richards | Episode: "The Life of Emile Zola" |
| 1955 | Letter to Loretta | Debbie Waring / Janey | 2 episodes |
| 1956 | The George Burns and Gracie Allen Show | Emily Vanderlip Foster | Episode: "The Newlyweds" |
| 1956 | Ford Theatre | Katherine Casey | Episode: "Sheila" |
| 1958 | Marshal | Martha Watson | Episode: "Shoot to Kill" |
| 1960 | Goodyear Theatre | Connie Peters | Episode: "Marked Down for Connie" |
| 1960 | Dennis the Menace | Georgiana Balanger | Episode: "Dennis and the Wedding" |
| 1960 | The Brothers Brannagan | Kate Warren | Episode: "Duet" |
| 1960–61 | The Andy Griffith Show | Elinor "Ellie" Walker | Main cast (season 1) |
| 1961 | General Electric Theater | Carol Madsen | Episode: "A Voice on the Phone" |
| 1961 | The United States Steel Hour | Fran Crowell | Episode: "Delayed Honeymoon" |
| 1963 | 77 Sunset Strip | Laura Holt | Episode: "Scream Softly, Dear" |
| 1963 | Have Gun – Will Travel | Letty Mae Stinchcomb | Episode: "The Burning Tree" |
| 1963 | Dr. Kildare | Sharon Calloway | Episode: "Ship's Doctor" |
| 1963 | Redigo | Joanie-Mae Kilpatrick | Episode: "Hostage Hero Riding" |
| 1963 | The Virginian | Carole Cole | Episode: "Siege" |
| 1964 | The Eleventh Hour | Melanie | Episode: "The Secret in the Stone" |
| 1964–65 | Many Happy Returns | Joan Randall | Main role |
| 1965 | A Man Called Shenandoah | Julie Wade | Episode: "Town on Fire" |
| 1967 | Occasional Wife | Linda Sue | Episode: "Oil, Be Seeing You" |
| 1967 | Star Trek: The Original Series | Nancy Hedford | Episode: "Metamorphosis" |
| 1968–70 | The Flying Nun | Dr. Jennifer Ethrington | 3 episodes |
| 1969 | In Name Only | Esther Garrity | TV film |
| 1972 | Gidget Gets Married | Medley Blaine | TV film |
| 1972–75 | The Odd Couple | Miriam Welby | Recurring role |
| 1974 | If I Love You, Am I Trapped Forever? | Alice Bennett | TV film |
| 1974 | Police Woman | Ellie Tarlow | Episode: "Warning: All Wives" |
| 1974 | The Rookies | Amanda | Episode: "Blue Christmas" |
| 1975 | Petrocelli | Joan Hiller | Episode: "Vengeance in White" |
| 1976 | S.W.A.T. | Marjorie Kemp | Episode: "Lessons in Fear" |
| 1977 | The Feather and Father Gang | Julie | Episode: "The People's Choice" |
| 1977 | The Father Knows Best Reunion | Betty Anderson | TV film |
| 1977 | Insight | Margaret Drill | Episode: "Christmas 2025" |
| 1977 | Mulligan's Stew | Jane Mulligan | Main role |
| 1977 | Father Knows Best: Home for Christmas | Betty Anderson | TV film |
| 1977 | Police Story | Camille Tackleberry | Episode: "Ice Time" |
| 1978 | Police Story | Joan Anderson | Episode: "No Margin for Error" |
| 1978 | Doctors' Private Lives | Mona Wise | TV film |
| 1978 | Please Stand By | Carol Lambert | Sitcom TV series - one year, aired in syndication |
| 1979 | Diff'rent Strokes | Diane Sloane | Episode: "The Woman" |
| 1980 | Condominium | Audrey Ames | TV film |
| 1980 | Barnaby Jones | Judy Corbett | Episode: "The Silent Accuser" |
| 1981 | Mork & Mindy | Dr. Joni Lincoln | Episode: "Mindy and Mork" |
| 1981 | The Grady Nutt Show | Ellie Williams | TV film |
| 1981 | One Day at a Time | Felicia | Episode: "Alex Moves In" |
| 1981 | Fantasy Island | Madge Nolan / Blanche Barrens | 2 episodes |
| 1982 | The Dukes of Hazzard | Marjorie Dane | Episode: "The Sound of Music - Hazzard Style" |
| 1983 | High School U.S.A. | Mrs. Franklin | TV film |