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Union County, NJ Parcels & GIS Data

Union County, NJ parcel data: 140,918 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Union County, New Jersey parcel data covering 140,918 property records.

This page documents parcel-level coverage for Union County, New Jersey. 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 Union County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete Union County property dataset.

Union County is a county in the northern-central part of the U.S. state of New Jersey. As of the 2020 United States census, the county was the state's seventh-most-populous county with a population of 575,345, its highest decennial count ever and an increase of 38,846 (+7.2%) from the 2010 census count of 536,499. The United States Census Bureau's Population Estimates Program estimated a 2025 population of 601,863, an increase of 26,518 (+4.6%) from the 2020 decennial census.

FIPS 34039

Official county website: https://ucnj.org/

The FIPS code for Union County is 34039.

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Attribute coverage

Union County contains 140,918 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%140,918
parcelid100%140,907
parcelid2100%140,896
ogparcelid100%140,903
ogparcelid2100%140,892
parentid<0.1%0
stackid<0.1%0
geoid100%140,918
statefp100%140,918
countyfp100%140,918
countyname100%140,918
cousubfp100%140,918
cousubname100%140,918
tractce100%140,918
tractname100%140,918
taxacctnum39.4%55,486
taxyear100%140,896
taxdistrict<0.1%0
usecode99.1%139,584
usedesc99.7%140,459
zoningcode68.9%97,089
zoningdesc<0.1%0
numbldgs100%140,918
numunits96.5%136,041
yearbuilt92.6%130,438
numfloors87.0%122,615
bldgsqft79.6%112,178
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue99.7%140,463
landvalue99.7%140,464
agvalue99.7%140,461
totalvalue99.7%140,464
taxacres<0.1%0
calcarea100%140,918
saleamt99.7%140,464
saledate99.7%140,464
ownertype99.7%140,506
ownername99.7%140,505
owneraddr99.6%140,395
ownercity99.0%139,442
ownerstate98.7%139,131
ownerzip98.6%139,003
parceladdr100%140,917
parcelcity99.9%140,725
parcelstate100%140,918
parcelzip100%140,918
legaldesc100%140,868
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book93.7%132,072
page93.7%132,050
block99.7%140,463
lot100%140,868
parceltype0.9%1,216
accesstype0.9%1,216
iucnclass0.4%499
placename5.9%8,347
placetype5.7%8,020
firmid100%140,859
firmdate100%140,859
fldzone100%140,859
zonesubty95.8%135,004
staticbfe0.1%138
elevmin100%140,891
elevmax100%140,891
elevavg100%140,891
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
naicscode15.1%21,236
frsid0.4%530
dfrurl0.4%530
caapermit0.4%530
cwapermit0.4%530
rcrapermit0.4%530
updated100%140,918
centroidx100%140,918
centroidy100%140,918
surfpointx100%140,918
surfpointy100%140,918
geom100%140,918
extras100%140,918
ownerlist99.6%140,334
placefp64.0%90,215
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Union 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 — Union County, New Jersey (34039) 1 entity · most recent acquisition per entity · generated 2026-08-30 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 search_apn owner_firstname owner_lastname owner_st_number owner_st_dir owner_st_name owner_st_type owner_st_unit owner_city owner_state owner_zip site_st_number site_st_dir site_st_name site_st_type site_st_unit site_city site_state site_zip geom 7 cols ⇢ parcelid parcelid2 ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip 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 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 95.8% zonesubty 0.1% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 99.1% usecode 100% usedesc 68.9% zoningcode 100% numbldgs 96.5% numunits 92.6% yearbuilt 87.0% numfloors 79.6% bldgsqft 100% imprvalue 100% landvalue 100% agvalue 100% totalvalue 100% saleamt 100% saledate 100% legaldesc 93.7% book 93.7% page 100% block 100% lot 100% ownerlist 64.0% placefp lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear usecode usedesc zoningcode numbldgs numunits yearbuilt numfloors bldgsqft imprvalue landvalue agvalue totalvalue calcarea saleamt saledate ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc book page block lot firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp publish.parcel_layer columns not fed by these sources (34) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxdistrict, zoningdesc, bedrooms, halfbaths, fullbaths, taxacres, township, section, qtrsection, range plssdesc, parceltype, accesstype, iucnclass, placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, zoningurl PARCEL 12 mapped · 3 transformed · 7 kept in extras · 42 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL apn search_apn owner_firstname owner_lastname owner_st_number owner_st_dir owner_st_name owner_st_type owner_st_unit owner_city owner_state owner_zip site_st_number site_st_dir site_st_name site_st_type site_st_unit site_city site_state site_zip geom parcelid parcelid2 ownername CAST(COALESCE(owner_firstname, '') || ' ' || COALESCE(owner_las… owneraddr CAST(COALESCE(owner_st_number, '') || ' ' || COALESCE(owner_st_… ownercity ownerstate ownerzip parceladdr CAST(COALESCE(site_st_number, '') || ' ' || COALESCE(site_st_di… parcelcity parcelstate parcelzip geom extras · 7 source columns preserved as json site_st_post_dir, clientid, shape_starea__, shape_stlength__ stagingid, oldglobalid, globalid extras not present in source — filled with NULL (42) taxacctnum, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, imprvalue, landvalue, agvalue, totalvalue, taxacres, saleamt, saledate, legaldesc, township, section, qtrsection, range, plssdesc book, page, block, lot, updated, sourceurl, taxdistrict, parentid, fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Union County:

Frequently asked questions

Where can I find Union County, NJ parcel and GIS data?

Land Records publishes a Union County, NJ 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 Union County, NJ dataset as a GeoPackage or CSV.

How many parcels are in Union County, NJ?

The current dataset contains 140,918 parcel records for Union County, NJ, each with its boundary geometry and assessor attributes.

What is the FIPS code for Union County, NJ?

The FIPS code for Union County, NJ is 34039.

What information does each Union County, NJ parcel record include?

Each Union County, NJ 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 Union County, NJ parcel data free?

You can preview Union County, NJ 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 Union County, NJ have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated