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County · code 06071

San Bernardino CountyCalifornia

San Bernardino County, California was created on April 26, 1853, from Los Angeles County. The county seat is San Bernardino.

  • Founded1853
  • County seatSan Bernardino
  • Named forSan Bernardino, California
  • Land area20,068 sq mi + 37 sq mi water
  • Population2,181,654 2020 Census
  • Parcels mapped845,119 checked 16 October 2026
Open the free map Click any parcel in San Bernardino County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

RiversideClark, NVOrangeInyoLos AngelesLa Paz, AZMohave, AZKern San Bernardino Census outline · seat marked

Where it is

San Bernardino on the map of California

California has 58 counties and county equivalents, each with its own records office. Shapes with a page are links.

Alameda CountyAlpine CountyAmador CountyButte CountyCalaveras CountyColusa CountyContra Costa CountyDel Norte CountyEl Dorado CountyFresno CountyGlenn CountyHumboldt CountyImperial CountyInyo CountyKern CountyKings CountyLake CountyLassen CountyLos Angeles CountyMadera CountyMarin CountyMariposa CountyMendocino CountyMerced CountyModoc CountyMono CountyMonterey CountyNapa CountyNevada CountyOrange CountyPlacer CountyPlumas CountyRiverside CountySacramento CountySan Benito CountySan Diego CountySan Francisco CountySan Joaquin CountySan Luis Obispo CountySan Mateo CountySanta Barbara CountySanta Clara CountySanta Cruz CountyShasta CountySierra CountySiskiyou CountySolano CountySonoma CountyStanislaus CountySutter CountyTehama CountyTrinity CountyTulare CountyTuolumne CountyVentura CountyYolo CountyYuba CountySan Bernardino County San Bernardino
Counties of California · San Bernardino highlighted

History

Formed in 1853 from Los Angeles County

An old deed may name a county that no longer exists, or a boundary that has since moved.

San Bernardino County was formed in 1853 and was named after San Bernardino. The county gained and lost territory through multiple boundary changes: it gained from San Diego in 1873, lost part of its territory to the creation of Riverside County in 1893, gained from Kern in 1917, and exchanged areas with Riverside in 1919. A boundary dispute with Inyo County, dating from 1947, was resolved in 1957 when San Bernardino County gained a small area from Inyo.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1853
    San Bernardino County created San Bernardino created from Los Angeles.
    from Los Angeles
    · Calif. Stats. 1853, 4th sess., ch. 78/pp. 119-123
  2. 1873
    Gained territory San Bernardino gained from San Diego, lost to Inyo.
    from San Diegofrom Inyo
    · Political Code 1872, 1: secs. 3942-3944/pp. 139-141
  3. 1877
    Gained territory San Bernardino gained from Los Angeles as a result of an official survey of the boundary.
    from Los Angeles
    · Coy, 149, 217-219
  4. 1893
    Lost territory San Bernardino lost to creation of Riverside. Act passed 11 March 1893; referendum for or against creation of new county held 2 May 1893.
    to Riverside
    · Calif. Stats. 1893, 30th sess., ch. 142/pp. 158-168
  5. 1917
    Gained territory San Bernardino gained from Kern.
    from Kern
    · Calif. Stats. 1917, 42d sess., ch. 205/p. 301
Show all 14 changes (9 more, mostly small adjustments)
  1. 1853
    San Bernardino County created San Bernardino created from Los Angeles.
    from Los Angeles
    · Calif. Stats. 1853, 4th sess., ch. 78/pp. 119-123
  2. 1857
    Boundary clarified San Bernardino boundaries redefined (no change).
    no change
    · Calif. Stats. 1857, 8th sess., ch. 142/p. 165
  3. 1873
    Gained territory San Bernardino gained from San Diego, lost to Inyo.
    from San Diegofrom Inyo
    · Political Code 1872, 1: secs. 3942-3944/pp. 139-141
  4. 1877
    Gained territory San Bernardino gained from Los Angeles as a result of an official survey of the boundary.
    from Los Angeles
    · Coy, 149, 217-219
  5. 1893
    Lost territory San Bernardino lost to creation of Riverside. Act passed 11 March 1893; referendum for or against creation of new county held 2 May 1893.
    to Riverside
    · Calif. Stats. 1893, 30th sess., ch. 142/pp. 158-168
  6. 1917
    Gained territory San Bernardino gained from Kern.
    from Kern
    · Calif. Stats. 1917, 42d sess., ch. 205/p. 301
  7. 1919
    Exchanged territory San Bernardino exchanged with Riverside.
    with Riverside
    · Calif. Stats. 1919, 43d sess., ch. 62/p. 99
  8. 1947
    Changed Boundary between San Bernardino and Inyo placed in dispute. Section 23136 of Political Code was revised to authorize San Bernardino to gain from Inyo a strip of territory one and one-half miles wide between the San Bernardino Meridian and the state line. The companion description of Inyo boundaries in section 23114 authorized no such change (no change)..
    Inyo
    · Calif. Stats. 1947, reg. sess., ch. 424, secs. 23114, 23136/pp. 1050, 1068
  9. 1957
    Gained territory San Bernardino gained small area from Inyo; boundaries of San Bernardino and Inyo clarified, ending boundary dispute dating from 1947.
    from Inyo
    · Calif. Stats. 1957, reg. sess., ch. 2382/p. 4119
  10. 1963
    Exchanged territory San Bernardino exchanged small areas with Kern.
    with Kern
    · Coy, 340, 342; correspondence, California Board of Equalization, 25 July 2002
  11. 1967
    Boundary clarified San Bernardino boundaries redefined to more precisely define the boundary between San Bernardino and the State of Arizona.
    no change
    · Calif. Stats. 1967, reg. sess., ch. 655/pp. 2024-2026; Coy, 341-342
  12. c. 1972
    Changed Boundary between Inyo and San Bernardino was adjusted.
    Inyo
    · Correspondence, California State Board of Equalization, 25 July 2002
  13. 1992
    Gained territory San Bernardino gained small area from Los Angeles. Ordinance passed 27 January 1992; effective 1 March 1992.
    from Los Angeles
    · Minutes of the Board of Supervisors, San Bernardino County, 27 January 1992, ordinance 3478
  14. 1993
    Gained territory San Bernardino gained small area from Los Angeles.
    from Los Angeles
    · Calif. Stats. 1993-1994, reg. sess., ch. 1195, sec. 3/p. 6854

Land and parcels

What the maps cover in San Bernardino

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

San Bernardino by the Census

Population
2,181,654 2020 Census count
Housing units
731,899 2020 Census count
Land area
20,068 square miles
Water area
37 square miles
People per sq mi
109 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

San Bernardino County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

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Questions

Common questions about San Bernardino County

When was San Bernardino County founded?
San Bernardino County was founded in 1853, formed from Los Angeles County, and named after San Bernardino, California.
What is the county seat of San Bernardino County?
The county seat of San Bernardino County is San Bernardino.
Is there an online parcel map for San Bernardino County?
Yes. A public source publishes a parcel map of 845,119 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has San Bernardino County's boundary or name changed?
San Bernardino County was created in 1853 from Los Angeles County. Since then the Atlas of Historical County Boundaries records 10 later changes, chiefly involving Inyo County, Los Angeles County and Kern County.
Is my lot in a flood zone?
We do not have flood maps for San Bernardino County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door