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County Profile

Alameda County

POPULATION: 1,619,244

INCORPORATION DATE: 1853

BOARD OF SUPERVISORS:

  • District 1 – Scott Haggerty
  • District 2 – Richard Valle
  • District 3 – Wilma Chan
  • District 4 – Nate Miley
  • District 5 – Keith Carson
1221 Oak Street, Suite 536, Oakland, CA 94612
View map
(510) 272-6347
County Profile

Alpine County

POPULATION: 1,166

INCORPORATION DATE: 1864

BOARD OF SUPERVISORS:

  • District 1 – Donald M. Jardine
  • District 2 – Ron Hames
  • District 3 – Kathrin Rakow
  • District 4 – Terry Woodrow
  • District 5 – David Griffith
P.O. Box 158 (99 Water St.), Markleeville, CA 96120
View map
(530) 694-2281
County Profile

Amador County

POPULATION: 37,707

INCORPORATION DATE: 1854

BOARD OF SUPERVISORS:

  • District 1 – Patrick Crew
  • District 2 – Richard Forster
  • District 3 – Lynn Morgan
  • District 4 – Fred Axe
  • District 5 – Brian Oneto
810 Court St., Jackson, CA 95642
View map
(209) 223-6470
County Profile

Butte County

POPULATION: 224,301

INCORPORATION DATE: 1850 

BOARD OF SUPERVISORS:

  • District 1 – Bill Connelly
  • District 2 – Larry Wahl
  • District 3 – Maureen Kirk
  • District 4 – Steve Lambert
  • District 5 – Doug Teeter
25 County Center Dr., Oroville, CA 95965
View map
(530) 538-7631
County Profile

Calaveras Country

POPULATION: 45,207

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Gary Tofanelli
  • District 2 – John Garamendi Jr.
  • District 3 – Michael Oliveira
  • District 4 – Dennis Mills
  • District 5 – Clyde Clapp
891 Mountain Ranch Road,
San Andreas, CA 95249
View map
(209) 754-6303
County Profile

Colusa County

POPULATION: 22,312

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Kim Dolbow Vann
  • District 2 – John Loudon
  • District 3 – Mark Marshall
  • District 4 – Gary Evans
  • District 5 – Denise Carter
546 Jay Street
Colusa, CA 95932
View map
(530) 458-0508
County Profile

Contra Costa County

POPULATION: 1,123,429

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – John Gioia
  • District 2 – Candace Andersen
  • District 3 – Diane Burgis
  • District 4 – Karen Mitchoff
  • District 5 – Federal D. Glover
651 Pine Street
Martinez, CA 94553
View map
(925) 335-1080
County Profile

Del Norte County

POPULATION: 26,811

INCORPORATION DATE: 1857

BOARD OF SUPERVISORS:

  • District 1 – Roger Gitlin
  • District 2 – Lori Cowan
  • District 3 – Christopher Howard
  • District 4 – Gary Hemmingsen
  • District 5 – Bob Berkowitz
555 H Street
Crescent City, CA 95531
View map
(707) 464-7214
County Profile

El Dorado County

POPULATION: 183,750

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS: 

  • District 1 – John Hidahl
  • District 2 – Shiva Frentzen
  • District 3 – Brian Keith Veerkamp
  • District 4 – Michael Ranalli
  • District 5 – Sue Novasel
330 Fair Ln.
Placerville, CA 95667
View map
(530) 621-5567
County Profile

Fresno County

POPULATION: 984,541

INCORPORATION DATE: 1856

BOARD OF SUPERVISORS:

  • District 1 – Brian Pacheco
  • District 2 – Andreas Borgeas
  • District 3 – Sal Quintero
  • District 4 – Buddy Mendes
  • District 5 – Nathan Magsig
2281 Tulare St.
Fresno, CA 93721
View map
(559) 488-3529
County Profile

Glenn County

POPULATION: 29,000

INCORPORATION DATE: 1891

BOARD OF SUPERVISORS:

  • District 1 – John Viegas
  • District 2 – Dwight Foltz
  • District 3 – Vince Minto
  • District 4 – Keith Corum
  • District 5 – Leigh McDaniel
526 W. Sycamore St.
Willows, CA 95988
View map
(530) 934-6400
County Profile

Humboldt County

POPULATION: 135,116
INCORPORATION DATE: 1853

BOARD OF SUPERVISORS:

  • District 1 – Rex Bohn
  • District 2 – Estelle Fennell
  • District 3 – Mike Wilson
  • District 4 – Virginia Bass
  • District 5 – Ryan Sundberg
825 Fifth St.
Eureka, CA 95501
View map
(707) 476-2390
County Profile

Imperial County

POPULATION: 185,831

INCORPORATION DATE: 1907

BOARD OF SUPERVISORS:

  • District 1 – John Renison
  • District 2 – Luis Plancarte
  • District 3 – Michael Kelley
  • District 4 – Ryan Kelley
  • District 5 – Raymond Castillo
940 W. Main Street
El Centro, CA 92243
View map
(760) 482-4220
County Profile

Inyo County

POPULATION: 18,590

INCORPORATION DATE: 1866

BOARD OF SUPERVISORS:

  • District 1 – Dan Totheroh
  • District 2 – Jeff Griffiths
  • District 3 – Rick Pucci
  • District 4 – Mark Tillemans
  • District 5 – Matt Kingsley
168 N. Edwards
Independence, CA 93526
View map
(760) 878-0366
County Profile

Kern County

POPULATION: 884,436

INCORPORATION DATE: 1866

BOARD OF SUPERVISORS:

  • District 1 – Mark Gleason
  • District 2 – Zack Scrivner
  • District 3 – Mike Maggard
  • District 4 – David Couch
  • District 5 – Leticia Perez
1115 Truxtun Avenue
Bakersfield, CA 93301
View map
(661) 868-3601
County Profile

Kings County

POPULATION: 149,813

INCORPORATION DATE: 1893

BOARD OF SUPERVISORS:

  • District 1 – Joe Neves
  • District 2 – Richard Valle
  • District 3 – Doug Verboon
  • District 4 – Craig Pedersen
  • District 5 – Richard Fagundes
1400 W. Lacey Blvd.
Hanford, CA 93230
View map
(559) 582-3211
County Profile

Lake County

POPULATION: 64,306

INCORPORATION DATE: 1861

BOARD OF SUPERVISORS:

  • District 1 – Jose “Moke” Simon III
  • District 2 – Jeff Smith
  • District 3 – Jim Steele
  • District 4 – Tina Scott
  • District 5 – Rob Brown
255 N. Forbes Street
Lakeport, CA 95453
View map
(707) 263-2368
County Profile

Lassen County

POPULATION: 30,780

INCORPORATION DATE: 1864

BOARD OF SUPERVISORS:

  • District 1 – Chris Gallagher
  • District 2 – David Teeter
  • District 3 – Jeff Hemphill
  • District 4 – Aaron Albaugh
  • District 5 – Tom Hammond
221 S. Roop St.
Susanville, CA 96130
View map
(530) 251-8333
County Profile

Los Angeles County

POPULATION: 10,241,335

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Hilda Solis
  • District 2 – Mark Ridley-Thomas
  • District 3 – Sheila Kuehl
  • District 4 – Janice Hahn
  • District 5 – Kathryn Barger
500 W. Temple Street
Los Angeles, CA 90012
View map
(213) 974-1311
County Profile

Madera County

POPULATION: 155,349

INCORPORATION DATE: 1893

BOARD OF SUPERVISORS:

  • District 1 – Brett Frazier
  • District 2 – David Rogers
  • District 3 – Robert Paythress
  • District 4 – Max Rodriguez
  • District 5 – Tom Wheeler
200 West Fourth Street, Fourth Floor
Madera, CA 93637
View map
(559) 675-7700
County Profile

Marin County

POPULATION: 262,274

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Damon Connolly
  • District 2 – Katie Rice
  • District 3 – Kathrin Sears
  • District 4 – Dennis Rodoni
  • District 5 – Judy Arnold *
Civic Center, Room 329
San Rafael, CA 94903
View map
(415) 499-7331
County Profile

Mariposa County

POPULATION: 18,159

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Rosemarie Smallcombe
  • District 2 – Merlin Jones
  • District 3 – Marshall Long
  • District 4 – Kevin Cann
  • District 5 – Miles Menetrey
5100 Bullion Street
Mariposa, CA 95338
View map
(209) 966-3222
County Profile

Mendocino County

POPULATION: 88,378

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Carre Brown
  • District 2 – John McCowen
  • District 3 – Vacant
  • District 4 – Dan Gjerde
  • District 5 – Dan Hamburg
Courthouse
Ukiah, CA 95482
View map
(707) 463-4441
County Profile

Merced County

POPULATION: 271,579

INCORPORATION DATE: 1855

BOARD OF SUPERVISORS:

  • District 1 – Rodrigo Espinoza
  • District 2 – Lee Lor
  • District 3 – Daron McDaniel
  • District 4 – Lloyd Pareira
  • District 5 – Jerald O’Banion
2222 M Street
Merced, CA 95340
View map
(209) 385-7366
County Profile

Modoc County

POPULATION: 9,638

INCORPORATION DATE: 1874

BOARD OF SUPERVISORS:

  • District 1 – David Allan
  • District 2 – Patricia Cullins
  • District 3 – Kathie Rhoads
  • District 4 – Elizabeth Cavasso
  • District 5 – Geri Byrne
204 Court Street
Alturas, CA 96101
View map
(530) 233-6201
County Profile

Mono County

POPULATION: 13,721

INCORPORATION DATE: 1861

BOARD OF SUPERVISORS:

  • District 1 – Larry Johnston
  • District 2 – Fred Stump
  • District 3 – Bob Gardner
  • District 4 – John Peters
  • District 5 – Stacy Corless
P.O. Box 715
Bridgeport, CA 93517
View map
(760) 932-5410
County Profile

Monterey County

POPULATION: 437,138

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Luis Alejo
  • District 2 – John Phillips
  • District 3 – Simon Salinas *
  • District 4 – Jane Parker
  • District 5 – Mary Adams
240 Church Street
Salinas, CA 93901
View map
(831) 755-5066
County Profile

Napa County

POPULATION: 142,028

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Brad Wagenknecht
  • District 2 – Ryan Gregory 
  • District 3 – Diane Dillon
  • District 4 – Alfredo Pedroza
  • District 5 – Belia Ramos
1195 Third Street, Rm. 310
Napa, CA 94559
View map
(707) 253-4421
County Profile

Nevada County

POPULATION: 98,095

INCORPORATION DATE: 1851

BOARD OF SUPERVISORS: 

  • District 1 – Heidi Hall
  • District 2 – Ed Scofield
  • District 3 – Dan Miller
  • District 4 – Hank Weston
  • District 5 – Richard Anderson
950 Maidu Ave.
Nevada City, CA 95959
View map
(530) 265-1218
County Profile

Orange County

POPULATION: 3,183,011

INCORPORATION DATE: 1889

BOARD OF SUPERVISORS:

  • District 1 – Andrew Do
  • District 2 – Michelle Steel
  • District 3 – Todd Spitzer
  • District 4 – Shawn Nelson
  • District 5 – Lisa Bartlett
333 W. Santa Ana Blvd.
Santa Ana, CA 92701
View map
(714) 834-3100
County Profile

Placer County

POPULATION: 373,796

INCORPORATION DATE: 1851

BOARD OF SUPERVISORS:

  • District 1 – Jack Duran
  • District 2 – Robert Weygandt
  • District 3 – Jim Holmes
  • District 4 – Kirk Uhler
  • District 5 – Jennifer Montgomery
175 Fulweiler Ave.
Auburn, CA 95603
View map
(530) 889-4020
County Profile

Plumas County

POPULATION: 19,879

INCORPORATION DATE: 1854

BOARD OF SUPERVISORS:

  • District 1 – Michael Sanchez
  • District 2 – Kevin Goss
  • District 3 – Sherrie Thrall
  • District 4 – Lori Simpson
  • District 5 – Jeff Engel
Courthouse, 520 W. Main Street
Quincy, CA 95971
View map
(530) 283-6315
County Profile

Riverside County

POPULATION: 2,347,828

INCORPORATION DATE: 1893

BOARD OF SUPERVISORS: 

  • District 1 – Kevin Jeffries
  • District 2 – John Tavaglione
  • District 3 – Chuck Washington
  • District 4 – Vacant
  • District 5 – Marion Ashley
County Admin. Center, 4080 Lemon St. 14th Flr.,
Riverside, CA 92502
View map
(951) 955-1110
County Profile

Sacramento County

POPULATION: 1,495,297

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Phil Serna
  • District 2 – Patrick Kennedy
  • District 3 – Susan Peters
  • District 4 – Sue Frost
  • District 5 – Don Nottoli
700 H St.
Sacramento, CA 95814
View map
(916) 874-5411
County Profile

San Benito County

POPULATION: 58,648

INCORPORATION DATE: 1874

BOARD OF SUPERVISORS:

  • District 1 – Mark Medina
  • District 2 – Anthony Botelho
  • District 3 – Robert Rivas
  • District 4 – Jerry Muenzer
  • District 5 – Jaime De La Cruz
481 Fourth Street
Hollister, CA 95023
View map
(831) 636-4000
County Profile

San Bernardino County

POPULATION: 2,139,570

INCORPORATION DATE: 1853

BOARD OF SUPERVISORS:

  • District 1 – Robert Lovingood
  • District 2 – Janice Rutherford
  • District 3 – James Ramos
  • District 4 – Curt Hagman
  • District 5 – Josie Gonzales
385 N. Arrowhead
San Bernardino, CA 92415
View map
(909) 387-2020
County Profile

San Diego County

POPULATION: 3,288,612

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Greg Cox
  • District 2 – Dianne Jacob
  • District 3 – Kristin Gaspar
  • District 4 – Ron Roberts
  • District 5 – Bill Horn
1600 Pacific Highway
San Diego, CA 92101
View map
(619) 531-5431
County Profile

San Francisco City & County

POPULATION: 866,583

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Sandra Lee Fewer
  • District 2 – Mark Farrell
  • District 3 – Aaron Peskin
  • District 4 – Katy Tang
  • District 5 – London Breed
  • District 6 – Jane Kim
  • District 7 – Norman Yee
  • District 8 – Vacant
  • District 9 – ZHillary Ronen
  • District 10 – Malia Cohen
  • District 11 – Ahsha Safai
1 Dr. Carlton B. Goodlett Place
San Francisco, CA 94102
View map
(415) 554-4000
County Profile

San Joaquin County

POPULATION: 733,383

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Miguel Villapudua
  • District 2 – Kathy Miller
  • District 3 – Tom Patti
  • District 4 – Chuck Winn
  • District 5 – Bob Elliott
222 E. Weber Ave., Rm 701
Stockton, CA 95202
View map
(209) 468-3417
County Profile

San Luis Obispo County

POPULATION: 277,977

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS: 

  • District 1 – John Peschong
  • District 2 – Bruce Gibson
  • District 3 – Adam Hill
  • District 4 – Lynn Compton
  • District 5 – Debbie Arnold
County Government Center, Rm 370
San Luis Obispo, CA 93408
View map
(805) 781-5450
County Profile

San Mateo County

POPULATION: 766,041

INCORPORATION DATE: 1856

BOARD OF SUPERVISORS:

  • District 1 – Dave Pine
  • District 2 – Carole Groom
  • District 3 – Don Horsley
  • District 4 – Warren Slocum
  • District 5 – David Canepa
400 County Center
Redwood City, CA 94063
View map
(650) 363-4000
County Profile

Santa Barbara County

POPULATION: 446,717

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Das Williams
  • District 2 – Janet Wolf
  • District 3 – Joan Hartman
  • District 4 – Peter Adam
  • District 5 – Steve Lavagnino
105 E. Anapamu St., Rm. 407
Santa Barbara, CA 93101
View map
(805) 568-2240
County Profile

Santa Clara County

POPULATION: 1,927,888

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Mike Wasserman
  • District 2 – Cindy Chavez
  • District 3 – Dave Cortese
  • District 4 – Ken Yeager
  • District 5 – Joe Simitian
70 W. Hedding Street
San Jose, CA 95110
View map
(408) 299-5001
County Profile

Santa Cruz County

POPULATION: 275,902

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – John Leopold
  • District 2 – Zach Friend
  • District 3 – Ryan Coonerty
  • District 4 – Greg Caput
  • District 5 – Bruce McPherson
701 Ocean Street
Santa Cruz, CA 95060
View map
(831) 454-2000
County Profile

Shasta County

POPULATION: 178,592

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS: 

  • District 1 – David Kehoe
  • District 2 – Leonard Moty
  • District 3 – Mary Rickert
  • District 4 – Steve Morgan
  • District 5 – Les Baugh
1450 Court Street, Suite 308B
Redding, CA 96001
View map
(530) 225-5557
County Profile

Sierra County

POPULATION: 3,203

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS: 

  • District 1 – Lee Adams
  • District 2 – Peter Huebner
  • District 3 – Paul Roen
  • District 4 – Jim Beard
  • District 5 – Scott Schlefstein
P.O. Box D
Downieville, CA 95936
View map
(530) 289-3295
County Profile

Siskiyou County

POPULATION: 44,739

INCORPORATION DATE: 1852

BOARD OF SUPERVISORS: 

  • District 1 – Brandon Criss
  • District 2 – Ed Valenzuela
  • District 3 – Michael Kobseff
  • District 4 – Lisa McMurray Nixon
  • District 5 – Ray Haupt
P.O. Box 338
Yreka, CA 96097
View map
(530) 842-8081
County Profile

Solano County

POPULATION: 431,498

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS: 

  • District 1 – Erin Hannigan
  • District 2 – Monica Brown
  • District 3 – Jim Spering
  • District 4 – John Vasquez *
  • District 5 – Skip Thomson
580 Texas Street
Fairfield, CA 94533
View map
(707) 784-6100
County Profile

Sonoma County

POPULATION: 501,959

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Susan Gorin
  • District 2 – David Rabbitt
  • District 3 – Shirlee Zane
  • District 4 – James Gore
  • District 5 – Lynda Hopkins
575 Administration Drive
Santa Rosa, CA 95403
View map
(707) 565-2241
County Profile

Stanislaus County

POPULATION: 540,214

INCORPORATION DATE: 1854

BOARD OF SUPERVISORS:

  • District 1 – Kristin Olsen
  • District 2 – Vito Chiesa
  • District 3 – Terry Withrow
  • District 4 – Dick Monteith
  • District 5 – Jim Demartini
1010 10th St. Ste. 6500
Modesto, CA 95354
View map
(209) 525-6333
County Profile

Sutter County

POPULATION: 97,308

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Ron Sullenger
  • District 2 – Dan Flores
  • District 3 – Larry E. Munger
  • District 4 – Jim Whiteaker
  • District 5 – Matt Conant
1160 Civic Center Boulevard, Ste. A
Yuba City, CA 95993
View map
(530) 822-7106
County Profile

Tehama County

POPULATION: 63,934

INCORPORATION DATE: 1856

BOARD OF SUPERVISORS:

  • District 1 – Steve Chamblin
  • District 2 – Candy Carlson
  • District 3 – Dennis Garton
  • District 4 – Bob Williams
  • District 5 – Burt Bundy
332 Pine Street, P.O. Box 250
Red Bluff, CA 96080
View map
(530) 527-4655
County Profile

Trinity County

POPULATION: 13,667

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Keith Groves
  • District 2 – Judy Morris
  • District 3 – Bobbi Chadwick
  • District 4 – William Burto
  • District 5 – John Fenley
101 Court St., P.O. Box 1613
Weaverville, CA 96093
View map
(530) 623-1217
County Profile

Tulare County

POPULATION: 466,339

INCORPORATION DATE: 1852

BOARD OF SUPERVISORS: 

  • District 1 – Kyler Crocker
  • District 2 – Peter Vander Poel
  • District 3 – Amy Shuklian
  • District 4 – Steve Worthley
  • District 5 – Mike Ennis
2800 W. Burrel
Visalia, CA 93291
View map
(559) 733-6531
County Profile

Tuolumne County

POPULATION: 54,900

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Sherri Brennan
  • District 2 – Randy Hanelt
  • District 3 – Evan Royce
  • District 4 – John Gray
  • District 5 – Karl Rodefer
2 S. Green St.
Sonora, CA 95370
View map
(209) 533-5521
County Profile

Ventura County

POPULATION: 856,508

INCORPORATION DATE: 1872

BOARD OF SUPERVISORS: 

  • District 1 – Steve Bennett
  • District 2 – Linda Parks
  • District 3 – Kelly Long
  • District 4 – Peter Foy
  • District 5 – John Zaragoza
800 S. Victoria Ave.
Ventura, CA 93009
View map
(805) 654-2266
County Profile

Yolo County

POPULATION: 214,555

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS:

  • District 1 – Oscar Villegas
  • District 2 – Don Saylor
  • District 3 – Matt Rexroad
  • District 4 – Jim Provenza
  • District 5 – Duane Chamberlain
625 Court St.
Woodland, CA 95895
View map
(530) 666-8195
County Profile

Yuba County

POPULATION: 74,345

INCORPORATION DATE: 1850

BOARD OF SUPERVISORS: 

  • District 1 – Andy Vasquez
  • District 2 – Mike Leahy
  • District 3 – Doug Lofteon
  • District 4 – Gary Bradford
  • District 5 – Randy Fletcher
215 Fifth Street
Marysville, CA 95901
View map
(530) 749-7575
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