State Senator Adriane Johnson was sworn in as the first Black state Senator from Lake County to represent the 30th District in October 2020.

As commissioner of the Buffalo Grove Park District Board and the president of the Buffalo Grove-Lincolnshire Chamber of Commerce, Johnson had dedicated her life to serving the residents, small businesses and local parks of the northern suburbs.  Prior to her current job, Johnson served as the president of the Buffalo Grove Park District.

Johnson is also currently the chair of the Illinois Association of Park Districts' Board of Trustees, a member of the Village's Board of Fire and Police Commissioners, a member of the Rotary Club of Buffalo Grove, and serves as a volunteer with the Taproot Foundation.

Through years of hard work and dedication to Buffalo Grove and the surrounding area, Johnson has received many business and service awards, including Buffalo Grove Rotarian of the Year, Board Member and Member of the Year by the Buffalo Grove-Lincolnshire Chamber of Commerce, Rising Star by the Illinois Association of Park Districts, Women in Business Leadership Award from the North Shore Women's Conference, and the Leadership and Service Award from Loyola University Chicago School of Law.

Johnson will serve as vice chair of the environment and conservation committee, and will sit on the behavioral and mental health, commerce, public safety, ethics, and transportation committees. 

Johnson received a Bachelor of Arts degree in Liberal Studies from Columbia College and a Master of Jurisprudence in Business Law from Loyola University Chicago School of Law. She lives with her husband, Bruce, in Buffalo Grove. The couple has an adult daughter who lives in Chicago.

The 30th State Senate District includes all or part of Waukegan, Buffalo Grove, Vernon Hills, Mundelein, North Chicago, Wheeling, Gurnee, Park City, Lincolnshire, Riverwoods and Beach Park.

The 30th Senate District, being north of Chicago, encompasses a mixture of urban communities and small towns within those communities. The district incorporates all or portions of the following communities: Beach Park, Buffalo Grove, Green Oaks, Gurnee, Indian Creek, Knollwood, Lake Bluff, Lake Forest, Libertyville, Lincolnshire, Long Grove, Mettawa, Mundelein, North Chicago, Park City, Riverwoods, Vernon Hills, Wadsworth, Waukegan and Wheeling.

Major employers in district communities include Allstate Insurance, Baxter International, Six Flags Great America, Motorola, Medline Hospital Supplies, Abbott Labs, Grainger, Discover and ACCO Brands.