- Jefferson County Public Library (Louisville, Kentucky): 301 York St, Louisville, KY 40202.
- Jefferson County Library (Golden, Colorado): 10200 W. 20th Ave, Golden, CO 80401.
- Jefferson County Public Library (Birmingham, Alabama): 2121 Richard Arrington Jr. Blvd N, Birmingham, AL 35203.
- Jefferson County Library (Fulton, Mississippi): 101 W 2nd St, Fulton, MS 38843.
- Jefferson County Library System (Port Arthur, Texas): 2610 9th Ave, Port Arthur, TX 77642.
- Jefferson County Public Library (Charles Town, West Virginia): 104 E Washington St, Charles Town, WV 25414.
Please note that these are just a few examples, and there may be other Jefferson County Libraries located in different parts of the country.