Played by Patricia Richardson
- Full name: Jillian ? Taylor [2.21]
- née: Patterson [2.21]
- Born November 1956 [1.16], [5.04] Although [1.16] would suggest February 1957 but continuity considerations would be more important in later seasons and so greater weight is given to them
- Parents: Fred, Lillian
- Spouse: Tim. Married in February 1980 [2.16], [8.17]
Katie [2.09], [2.21], [4.08] and Carol [3.01] have also been mentioned.
- Children: Brad, Randy, Mark.
- Other relations: Aunt Edna [5.01], Cousin Lisa (Jill's favorite cousin) [5.01], Cousin Bonnie [5.01], Uncle Tubby (deceased) [5.01], Aunt Sheila (deceased) who was bald which seems to run in the family [6.06], Cousin Henry [5.04]
The Taylor Family
- Address: 510 Glenview Road [4.09]
- City: Detroit, Edgewood [2.22], possibly in Royal Oak (Harry's Hardware Store is in Royal Oak [4.06] and the Taylors were visted by a Royal Oak bank appraiser [4.09])
- State: Michigan
- the Taylor's home phone number is unlisted [3.06]
- the contact phone number for renting Tim's house is 555-0172 [7.14]