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County · code 06009

Calaveras CountyCalifornia

Calaveras County is a California county formed in 1850 with its county seat in San Andreas.

  • Founded1850
  • County seatSan Andreas
  • Land area1,020 sq mi + 17 sq mi water
  • Population45,292 2020 Census
  • Parcels mapped43,450 checked 14 October 2026
Open the free map Click any parcel in Calaveras County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

AmadorTuolumneSan JoaquinStanislausAlpine San Andreas Census outline · seat marked

Where it is

Calaveras 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 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 Bernardino 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 CountyCalaveras County Calaveras
Counties of California · Calaveras highlighted

History

Founded in 1850

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

Calaveras County was created from non-county area on February 18, 1850. The county lost territory to the creation of Amador County in 1854, Fresno County in 1856, Mono County in 1861, and Alpine County in 1864.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1850
    Calaveras County created Calaveras created from non-county area. · Calif. Stats. 1849, 1st sess., ch. 15, sec. 25/p. 63
  2. 1850
    Boundary clarified Calaveras boundaries clarified (no change).
    no change
    · Calif. Stats. 1849, 1st sess., ch. 111/pp. 262-263
  3. 1851
    Boundary clarified Calaveras boundaries redefined (no change).
    no change
    · Calif. Stats. 1851, 2d sess., ch. 14, sec. 13/p. 175
  4. 1854
    Lost territory Calaveras lost to creation of Amador. Act passed 11 May 1854; referendum for or against creation of the new county held 14 June 1854.
    to Amador
    · Calif. Stats. 1854, 5th sess., ch. 42/pp. 45-48
  5. 1856
    Lost territory Calaveras lost to creation of Frezno (now Fresno).
    to Freznoto Fresno
    · Calif. Stats. 1856, 7th sess., ch. 127/pp. 183
  6. 1861
    Lost territory Calaveras lost to creation of Mono.
    to Mono
    · Calif. Stats. 1861, 12th sess., ch. 233/pp. 235-236
  7. 1864
    Lost territory Calaveras lost to creation of Alpine.
    to Alpine
    · Calif. Stats. 1863-1864, 15th sess., ch. 180/pp. 178-182

Land and parcels

What the maps cover in Calaveras

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

Calaveras by the Census

Population
45,292 2020 Census count
Housing units
27,422 2020 Census count
Land area
1,020 square miles
Water area
17 square miles
People per sq mi
44 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

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Zoning and code

County government

See your own lot on these maps

Open Calaveras County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Calaveras County

When was Calaveras County founded?
Calaveras County was founded in 1850.
What is the county seat of Calaveras County?
The county seat of Calaveras County is San Andreas.
Is there an online parcel map for Calaveras County?
Yes. Calaveras County publishes a parcel map of 43,450 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Calaveras County's boundary or name changed?
Calaveras County was created in 1850. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Alpine County, Amador County and Fresno County.
Is my lot in a flood zone?
We do not have flood maps for Calaveras 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