As of the 2020 redistricting, California's 20th district has been shifted geographically to between the San Joaquin Valley and the Sierra Nevada region. It encompasses most of [[Kern County, California|Kern]] and [[Tulare County, California|Tulare]] Counties, and part of [[Fresno County, California|Fresno]] and [[Kings County, California|Kings]] Counties. It includes most of the southern [[Sierra Nevada]], with three "fingers" stretching into the San Joaquin Valley where most of its population lives. It includes the cities of [[Clovis, California|Clovis]], [[Tehachapi, California|Tehachapi]], [[Ridgecrest, California|Ridgecrest]], [[Taft, California|Taft]], and [[Lemoore, California|Lemoore]], the west side of [[Bakersfield, California|Bakersfield]], the south side of [[Visalia, California|Visalia]], the northeast side of [[Tulare, California|Tulare]], the north side of [[Hanford, California|Hanford]], and a small portion of northeastern [[Fresno, California|Fresno]] including [[California State University, Fresno]].
|-
! #
! County
! Seat
! Population
|-
| 29
| [[Kern County, California|Kern]]
| [[Bakersfield, California|Bakersfield]]
| 917,673
|-
| 107
| [[Tulare County, California|Tulare]]
| [[Visalia, California|Visalia]]
| 477,054
|}
As of the 2020 redistricting, California's 20th district has been shifted geographically to between the San Joaquin Valley and the Sierra Nevada region. It encompasses most of [[Kern County, California|Kern]] and [[Tulare County, California|Tulare]] Counties, and part of [[Fresno County, California|Fresno]] and [[Kings County, California|Kings]] Counties.
Kern County is split between this district, the [[CA-22|22nd district]], and the [[CA-23|23rd district]]. The 20th and 22nd are partitioned by Highway 58, Elk Hills Rd, Buttonwillow Dr, Wasco Way, Freeborn Rd, Adohr Rd, Dairy Rd, Stockdale Highway, Highway 43, 7th Standard Rd, Highway 65, S Granite Rd, Wesley Ln, Seven Sisters Rd, Manor St, Circle Dr, Brighton Way, N Chester Ave, E Belle Ave, E Roberts Ln, Kern River, Chester Ave, California Ave, New Stine Rd, Ming Ave, Ashe Rd, Panama Ln, Gosford Rd, Highway 119, Wible Rd, Houghton Rd, Highway 99, S Wheeler Ridge Rd, Sebastian Rd, Rancho Rd, N Rancho Dr, Herring Rd, Tejon Highway, Highway 223, General Beale Rd, Bakersfield Tehachapi Highway, Comanche Dr, Breckinridge Rd, Vineland Rd, Highway 184, College Ave, Willis Ave, Niles St, Oswell St, Highway 178, Morning Dr, and Round Mountain Rd. The 20th and 23rd are partitioned by Mojave-Barstow Highway, Treescape Rd, Oak Creek Rd, Anajanette Ave, 70th St W, Highway 58, Homer Hansen Private Rd, Aerospace Highway, Redrock Randsburgs Rd, Garlock Rd, Iron Canyon, and Union Pacific. The 20th district takes in the west side of the city of [[Bakersfield, California|Bakersfield]], the cities of [[Ridgecrest, California|Ridgecrest]] and [[Tehachapi, California|Tehachapi]], as well as the census-designated places [[Rosamond, California|Rosamond]], [[Rosedale, California|Rosedale]], and [[Oildale, California|Oildale]].
Tulare County is split between this district, the [[CA-21|21st district]], and the [[CA-23|23rd district]]. The 20th and 22nd are partitioned by Highway 190, Tule River, Avenue 146, Olive Dr, N Hillcrest St, Avenue 162, N Plano St, Lynch Dr, Road 256, Avenue 208, Road 244, Avenue 216, Avenue 226, E Honolulu St, E Fir St, Avenue 240, Road 204, Poppy Ave, Highway J15, Highway 137, N J St, N Oaks St, Highway 99, Avenue 280, Avenue 272, Avenue 264, and 1st Avenue. The 20th and 21st are partitioned by Boston Ave, N 4th Ave, Excelsior Ave, San Joaquin Valley, Road 56, Highway 198, N Camp Dr, N Neeley St, S Plaza St, Highway J19, Highway J32, N Hall Ave, Highway 63, W Tulare Ave, E Mineral King Ave, E Noble Ave, Avenue 296, Road 156, N Mariposa Ave, Avenue 264, W Myer Ave, San Joaquin Valley, E List Ave, Rocky Hill Dr, Avenue 280, Yokohl Dr, Palm Dr, Fritz Dr, Road 248, Dry Creek Dr, Avenue 360, Road 212, Highway 245, Millwood Dr, Friant Kern Canal, Negro Creek Rd, and Sand Creek. The 20th district takes in the south side of the city of [[Visalia, California|Visalia]], and the north side of the city of [[Tulare, California|Tulare]].
Fresno County is split between this district, the [[California's 5th congressional district|5th district]], and the [[CA-21|21st district]]. The 20th and 5th are partitioned by Highway 245, Dunlap Rd, Mill Creek, Todd Eymann Rd, Millwood Rd, Highway 180, NF-13597, Mill Flat Creek, Kings River, Balch Camp Rd, Sycamore Springs Rd, Dinkey Trimmer Rd, Big Creek Rd, Lower Rush Crk, Cherry Flt, Bobs Flat Rd, Sycamore Rd, Burrough Valley Rd, Tollhouse Rd, SJ and E Rd, Quail Oak Rd, Powerhouse Rd, San Joaquin River, Millerton Lake, N Friant Rd, N Willow Rd, E Herndon Ave, and N 1st St. The 20th and 21st are partitioned by E Bullard Ave, N 4th St, E Browning Ave, N Millbrook Ave, E Barstow Ave, N Cedar Ave, E Rialto Ave, E San Gabriel Ave, N Maple Ave, Dry Creek, E Dakota Ave, N Chestnut Diagonal, E Pontiac Way, N Ann Ave, W Dakota Ave, N Clovis Ave, E Dayton Ave, Duke Ave, N Duke Ave, E Shields Ave, N Miami Ave, E Princeton Ave, E Brown Ave, N Fordham Ave, E Clinton Ave, San Joaquin Valley, E Belmont Ave, N Temperance Ave, S Temperance Ave, E Central Ave, S Del Rey Ave, S Indianola Ave, Highway 180, S Academy Ave, E Switch Ave, E California Ave, S Rainbow Ave, S Riverbend Ave, E Annadale Ave, S Reed Ave, and Friant Kern Canal. The 20th district takes in the city of [[Clovis, California|Clovis]].
Kings County is split between this district and 22nd district. They are partitioned by Lacey Blvd, Highway 43, Fairmont Dr, W Grangeville Blvd, 14th Ave, Geneva Ave, 15th Ave, Highway 198, Houston Ave, Jersey Ave, and Jackson Ave. The 20th district takes in the city of [[Lemoore, California|Lemoore]] and the north side of the city of [[Hanford, California|Hanford]].
Prior to redistricting in 2011, the 20th district was located in the San Joaquin Valley. It covered Kings County and portions of Fresno and Kern counties, including most of the city of Fresno. That area is now largely divided between the 21st and 16th districts, while most of the current 20th was within the former 17th.
As of the 2020 redistricting, California's 20th district has been shifted geographically to between the San Joaquin Valley and the Sierra Nevada region. It encompasses most of Kern and Tulare Counties, and part of Fresno and Kings Counties. It includes most of the southern Sierra Nevada, with three "fingers" stretching into the San Joaquin Valley where most of its population lives. It includes the cities of Clovis, Tehachapi, Ridgecrest, Taft, and Lemoore, the west side of Bakersfield, the south side of Visalia, the northeast side of Tulare, the north side of Hanford, and a small portion of northeastern Fresno including California State University, Fresno.