Land Records Logo

Land Records

Alameda County, CA Parcels & GIS Data

Alameda County, CA parcel data: 489,630 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Alameda County, California parcel data covering 489,630 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.

Explore Alameda County data
San FranciscoSan MateoSanta ClaraContra CostaSan JoaquinStanislausAlameda
Buy dataset · $230.00One-time downloadSubscribe · $405.001 year of quarterly updates

Attribute coverage

Alameda County contains 489,630 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%489,630
parcelid100%489,630
parcelid2100%489,609
ogparcelid100%489,630
ogparcelid2100%489,609
parentid<0.1%0
stackid<0.1%0
geoid100%489,630
statefp100%489,630
countyfp100%489,630
countyname100%489,630
cousubfp100%489,630
cousubname100%489,630
tractce100%489,630
tractname100%489,630
taxacctnum<0.1%7
taxyear<0.1%9
taxdistrict<0.1%43
usecode99.9%489,316
usedesc<0.1%2
zoningcode<0.1%2
zoningdesc<0.1%2
numbldgs92.1%451,183
numunits92.2%451,204
yearbuilt<0.1%7
numfloors<0.1%6
bldgsqft<0.1%21
bedrooms<0.1%7
halfbaths<0.1%7
fullbaths<0.1%22
imprvalue92.3%451,720
landvalue94.2%461,290
agvalue50.5%247,223
totalvalue93.7%458,975
taxacres<0.1%7
calcarea100%489,630
saleamt<0.1%0
saledate<0.1%2
ownertype<0.1%9
ownername<0.1%9
owneraddr<0.1%22
ownercity<0.1%22
ownerstate<0.1%9
ownerzip<0.1%22
parceladdr99.9%489,313
parcelcity99.9%489,336
parcelstate100%489,630
parcelzip100%489,629
legaldesc<0.1%0
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book100%489,594
page100%489,594
block83.5%408,867
lot10.7%52,350
parceltype0.7%3,252
accesstype0.7%3,252
iucnclass0.1%505
placename8.5%41,776
placetype8.4%41,004
firmid100%489,630
firmdate100%489,630
fldzone100%489,630
zonesubty98.0%479,748
staticbfe1.1%5,269
elevmin8.8%43,131
elevmax8.8%43,131
elevavg8.8%43,131
fireplaces<0.1%6
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
naicscode8.5%41,776
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated<0.1%22
centroidx100%489,630
centroidy100%489,630
surfpointx100%489,630
surfpointy100%489,630
geom100%489,630
extras100%489,630
ownerlist<0.1%0

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) 1 entity · most recent acquisition per entity · generated 2026-07-25 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 sortparcel usecode imps land totalnetvalue situsaddress situscity situszip book page parcel sub_parcel geom 24 cols ⇢ parcelid parcelid2 usecode imprvalue landvalue totalvalue parceladdr parcelcity parcelzip book page block lot geom extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 0.0% taxyear 0.0% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 8.8% elevmin 8.8% elevmax 8.8% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 98.0% zonesubty 1.1% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 92.1% numbldgs 92.2% numunits 50.5% agvalue 100% parcelstate lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear usecode numbldgs numunits imprvalue landvalue agvalue totalvalue calcarea parceladdr parcelcity parcelstate parcelzip book page block lot firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras publish.parcel_layer columns not fed by these sources (48) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxdistrict, usedesc, zoningcode, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths taxacres, saleamt, saledate, ownertype, ownername, owneraddr, ownercity, ownerstate, ownerzip, legaldesc, township, section, qtrsection, range plssdesc, parceltype, accesstype, iucnclass, placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, ownerlist PARCEL 14 mapped · 24 kept in extras · 40 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL apn sortparcel usecode imps land totalnetvalue situsaddress situscity situszip book page parcel sub_parcel geom parcelid parcelid2 usecode imprvalue landvalue totalvalue parceladdr parcelcity parcelzip book page block lot geom extras · 24 source columns preserved as json apn_sort, clca_category, centroid_x, centroid_y, printparcel traprimary, trasecondary, situsstreetnumber, situsstreetname situsunit, situszip_4, clcaland, clcaimps, hoex, otex latestdocument_prefix, latestdocumentseries latestdocumentdate, mailingaddressstreet, mailingaddressunit mailingaddresscitystate, mailingaddresszip mailingaddresszip_4, econunit extras not present in source — filled with NULL (40) taxacctnum, taxyear, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths agvalue, taxacres, saleamt, saledate, ownername, owneraddr, ownercity, ownerstate, ownerzip, parcelstate, legaldesc, township, section qtrsection, range, plssdesc, updated, sourceurl, taxdistrict, parentid, fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

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 489,630 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
Alameda County, CA Parcels & GIS Data — Property Records & Maps | Land Records