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Alameda County, CA Parcels & GIS Data

Alameda County, CA parcel data: 489,997 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Alameda County, California parcel data covering 489,997 property records.

This page documents parcel-level coverage for Alameda County, California. Each parcel record carries its boundary polygon (GIS geometry) along with attributes such as the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and most recent sale price and date. Exact fill rates for Alameda County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete Alameda County property dataset.

Alameda County is located in the U.S. state of California. As of the 2020 census, the population was 1,682,353, making it the 7th-most populous county in the state and 21st most populous nationally. The county seat is Oakland.

FIPS 06001

Official county website: http://www.acgov.org

The FIPS code for Alameda County is 06001.

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Attribute coverage

Alameda County contains 489,997 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL). For the LBCS columns, only real classifications count: the to-be-determined and not-applicable placeholder codes are excluded.

ColumnCoverageRecords populated
lrid100%489,997
parcelid100%489,997
parcelid2100%489,997
ogparcelid100%489,997
ogparcelid2100%489,997
parentid<0.1%0
stackid<0.1%0
geoid100%489,997
statefp100%489,997
countyfp100%489,997
countyname100%489,997
cousubfp100%489,997
cousubname100%489,997
tractce100%489,997
tractname100%489,997
taxacctnum<0.1%0
taxyear100%489,997
taxdistrict<0.1%0
usecode99.9%489,742
usedesc64.7%317,159
zoningcode99.6%487,931
zoningdesc99.8%489,230
numbldgs100%489,997
numunits92.9%455,352
yearbuilt5.3%25,921
numfloors9.1%44,776
bldgsqft5.9%28,940
bedrooms5.9%28,943
halfbaths<0.1%0
fullbaths5.9%28,943
imprvalue92.7%454,088
landvalue94.5%463,132
agvalue50.7%248,399
totalvalue94.1%461,256
taxacres5.7%28,043
calcarea100%489,997
saleamt<0.1%0
saledate82.9%406,280
ownertype83.7%410,238
ownername83.7%409,901
owneraddr83.1%407,136
ownercity82.7%405,005
ownerstate82.6%404,769
ownerzip83.1%407,062
parceladdr100%489,955
parcelcity100%489,949
parcelstate100%489,997
parcelzip100%489,996
legaldesc<0.1%0
township100%489,992
section100%489,992
qtrsection100%489,992
range100%489,992
plssdesc100%489,992
book99.7%488,377
page99.7%488,377
block83.3%407,992
lot10.6%52,184
parceltype0.7%3,255
accesstype0.7%3,256
iucnclass0.1%503
placename8.5%41,651
placetype8.4%40,953
firmid100%489,997
firmdate100%489,997
fldzone100%489,997
zonesubty98.0%480,114
staticbfe1.1%5,273
elevmin8.9%43,398
elevmax8.9%43,398
elevavg8.9%43,398
fireplaces<0.1%0
heating<0.1%0
heatfuel<0.1%0
cooling<0.1%0
foundation<0.1%0
roofcover<0.1%0
siding<0.1%0
bldgtype<0.1%0
naicscode13.6%66,768
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%489,997
centroidx100%489,997
centroidy100%489,997
surfpointx100%489,997
surfpointy100%489,997
geom100%489,997
extras100%489,997
ownerlist46.1%225,908
placefp99.3%486,612
zoningurl85.3%417,794
lbcsactivity96.9%474,739
lbcsfunction96.6%473,525
lbcstype97.1%475,579
lbcscharacter98.6%483,378
lbcsownership83.9%411,094
sourceurl82.8%405,867

Schema mapping

How source columns from the acquired Alameda County GIS layers map into the harmonized entity schemas and assemble into the published parcel table, alongside supplemented fields (elevation, flood zone) and deterministic columns.

Schema mapping — Alameda County, California (06001) 2 entities · most recent acquisition per entity · generated 2026-10-10 direct column transformed (expression) geometry extras json supplemented determined ALL ENTITIES → FINAL PARCEL SCHEMA Harmonized entity columns assemble into publish.parcel_layer — matched by column name. Supplemented fields show their fill rate in this county. SOURCE COLUMNS HARMONIZED ENTITIES PUBLISH.PARCEL_LAYER PARCEL apn parcelid use_code building_ar lot_size situs_addre situs_city situs_zip date_updat geom 10 cols ⇢ parcelid parcelid2 usecode bldgsqft taxacres parceladdr parcelcity parcelzip updated geom extras ZONING zone label geom pd_overlay g_overlay h_overlay t_overlay y_f_overla a_overlay street labelswitc submerged globalid zoningcode zoningdesc geom extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 100% taxyear geom · derived from geometry geom dem.us_1m · USGS 1m DEM 8.9% elevmin 8.9% elevmax 8.9% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 98.0% zonesubty 1.1% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 64.7% usedesc 100% numbldgs 92.9% numunits 92.7% imprvalue 94.5% landvalue 50.7% agvalue 94.1% totalvalue 82.9% saledate 83.7% ownertype 83.7% ownername 83.1% owneraddr 82.7% ownercity 82.6% ownerstate 83.1% ownerzip 100% parcelstate 100% township 100% section 100% qtrsection 100% range 100% plssdesc 100% book 100% page 83.3% block 99.3% placefp 85.3% zoningurl 96.9% lbcsactivity 96.6% lbcsfunction 97.1% lbcstype 98.6% lbcscharacter 83.9% lbcsownership 82.8% sourceurl lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear usecode usedesc zoningcode zoningdesc numbldgs numunits bldgsqft imprvalue landvalue agvalue totalvalue taxacres calcarea saledate ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip township section qtrsection range plssdesc book page block firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras placefp zoningurl lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership sourceurl publish.parcel_layer columns not fed by these sources (32) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxdistrict, yearbuilt, numfloors, bedrooms, halfbaths, fullbaths, saleamt, legaldesc, lot, parceltype accesstype, iucnclass, placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid dfrurl, caapermit, cwapermit, rcrapermit, ownerlist PARCEL 10 mapped · 8 transformed · 10 kept in extras · 44 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL apn parcelid use_code building_ar lot_size situs_addre situs_city situs_zip date_updat geom parcelid NULLIF(TRIM(apn), '')::text parcelid2 NULLIF(TRIM(parcelid), '')::text usecode NULLIF(TRIM(use_code), '')::text bldgsqft NULLIF(TRIM(building_ar), '')::text taxacres (NULLIF(TRIM(lot_size), '')::numeric / 43560.0)::text parceladdr NULLIF(TRIM(situs_addre), '')::text parcelcity NULLIF(TRIM(situs_city), '')::text parcelzip NULLIF(TRIM(situs_zip), '')::text updated geom extras · 10 source columns preserved as json id, latitude, ext_min_y, ext_max_y, ext_min_x, longitude ext_max_x, situs_str_1, situs_unit, situs_stree extras not present in source — filled with NULL (44) taxacctnum, taxyear, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bedrooms, halfbaths, fullbaths, imprvalue landvalue, agvalue, totalvalue, saleamt, saledate, ownername, owneraddr, ownercity, ownerstate, ownerzip, parcelstate, legaldesc, township section, qtrsection, range, plssdesc, book, page, block, lot, sourceurl, taxdistrict, parentid, heatfuel, fireplaces, heating, cooling foundation, roofcover, siding ZONING 4 mapped · 3 transformed · 6 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING zone label geom pd_overlay g_overlay h_overlay t_overlay y_f_overla a_overlay street labelswitc submerged globalid zoningcode NULLIF(TRIM(zone::text), '')::text zoningdesc NULLIF(TRIM(label::text), '')::text geom extras json_build_object( 'pd_overlay', NULLIF(TRIM(pd_overlay::text),… not present in source — filled with NULL (6) zoningtype, ordinance, setbacks, restrictions, notes, sourceurl

Neighboring counties

Parcel data for counties bordering Alameda County:

Frequently asked questions

Where can I find Alameda County, CA parcel and GIS data?

Land Records publishes a Alameda County, CA parcel dataset in which every parcel carries its boundary polygon (GIS geometry) along with ownership, assessed value, land use, acreage, and sale history. Preview it in the interactive explorer on this page, or download the full Alameda County, CA dataset as a GeoPackage or CSV.

How many parcels are in Alameda County, CA?

The current dataset contains 489,997 parcel records for Alameda County, CA, each with its boundary geometry and assessor attributes.

What is the FIPS code for Alameda County, CA?

The FIPS code for Alameda County, CA is 06001.

What information does each Alameda County, CA parcel record include?

Each Alameda County, CA parcel record includes the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and the most recent sale price and date — plus the parcel boundary polygon. Per-attribute fill rates are listed in the coverage table on this page.

Is Alameda County, CA parcel data free?

You can preview Alameda County, CA parcels for free in the interactive explorer. The complete dataset is available as a one-time download or through the nationwide parcel web service; see the download options on this page for current pricing.

Does Alameda County, CA have an official GIS or property records website?

Yes — the official Alameda County, CA government website is linked in the county details above. Land Records standardizes Alameda County, CA assessor and recorder records into a single nationwide parcel schema with GIS boundary geometry.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated