Mercer County New Jersey Property Search
Use our property lookup tool to find Mercer County, New Jersey property records by owner name, parcel number, city, or street address (for example: 78th St E). Instantly access key details such as property ownership, assessed values, parcel information, and local tax rates in one convenient search.
New Jersey County Property Search
The property assessments in Mercer County are conducted by local municipal Tax Assessors under the supervision of the Mercer County Board of Taxation and the NJ Division of Taxation. The county includes 115,432 parcels, 128,612 matched buildings, 122,845 addresses, and 184,312 secondary-address parcels, with standardized zoning across all 12 municipalities, ensuring accurate valuations, fair taxation, and consistent property record management. The Tax Assessor plays a key role in determining each property’s market value and maintaining current assessment records.
Mercer County ZIP Codes & Cities
Search your city or ZIP below to quickly find locations within Mercer County, New Jersey.
Mercer County New Jersey Property Overview
Mercer County, New Jersey has a diverse real estate market with 110,643 residential and 5,703 commercial properties. The average single-family home is about 63 years old with 1,855 sq ft of space. In 2026, the county recorded 563 residential sales, while 45.38% of homes are equity-rich. The effective property tax rate is 1.75%, with 108 foreclosure filings reported in 2026.
Residential Properties
110,643
Commercial Properties
5,703
Avg. Home Age Single Family
63 Years
Avg. Square Feet Single Family
1,855
Residential Sales 2026
563
Homes Seriously Underwater
1.72%
Residential Sales 2025
4,656
Equity Rich Homes percentage
45.38%
Effective 2025 Property Tax
1.75%
Total Foreclosure Filings 2026
108
Nearby Counties
Mercer County, New Jersey, is centrally located, connecting North and South Jersey, and bordered by Hunterdon, Somerset, Middlesex, Monmouth, Burlington, and Bucks County, PA. Home to Trenton and Princeton, it boasts vibrant communities, rich history, and key economic hubs.
Popular Cities
Mercer County, New Jersey features several vibrant communities, with Hamilton Township, Trenton, and Ewing Township as its most prominent cities. These areas highlight the county’s diverse residential, commercial, and cultural landscape, offering a mix of historic neighborhoods, modern amenities, and strong community growth, making them key hubs in Mercer County.
64,742 properties
Trenton City
9,852 properties
Lawrence Township
16,433 properties
Princeton City
How To Search Property In Mercer County New Jersey
By Owner Name
Using our Mercer County property search tool, quickly look up property records by owner name and instantly view comprehensive ownership and property details.
Search By Address
With our Mercer County property lookup tool, search by property address to instantly view parcel information, estimated home value, and detailed tax records.
Search By Parcel
This Mercer County parcel search tool lets you find properties by parcel number and view precise boundary lines along with complete property record details.
Search By Zip Code
Mercer County property search tool enables searching by ZIP code to explore local properties, neighborhood insights, and detailed tax information quickly.
Mercer County New Jersey Property Market Trends (2024–2025)
Mercer County’s real estate market remained active in 2024–2025, showing steady residential sales and shifting foreclosure activity. Median home prices reached $381,000 with an average down payment of $61,500. In February 2025, 254 homes were sold, supported by 205 purchase loans, 196 refinances, and 109 HELOCs. Foreclosure filings totaled 61, with 39 foreclosure starts, reflecting changing market conditions. Single-family homes maintain solid equity, and the county’s blend of historic neighborhoods and growing communities continues to support a stable and attractive housing environment.
Mercer County Property Market Trends (2025)
Mercer County New Jersey Property Data Insights
Mercer County maintains extensive property records, encompassing 115,432 parcels with verified buildings, secondary addresses, and standardized zoning information. Updated on February 15, 2026, this dataset provides accurate land, building, and zoning details, enabling homeowners, buyers, and investors to make informed decisions about property values, development potential, and real estate trends throughout the county.
Parcels Overview
Mercer County currently maintains 115,432 parcels in its property database, covering both residential and commercial properties. This comprehensive parcel information provides accurate land ownership, tax mapping, and assessment details, helping homeowners, investors, and researchers make informed decisions and understand real estate trends across the county.
Data Refresh & Updates
The most recent refresh date for Mercer County property records is February 15, 2026, providing accurate land, parcel, and valuation data. Regular updates ensure that homeowners, buyers, and researchers have access to the most current and reliable property information across the county.
Matched Buildings Data
Mercer County includes 128,612 matched buildings directly linked to parcel records. Building imagery and structural data were collected between 2023 and 2025, offering detailed insights to support property evaluations, planning, GIS mapping, and assessment analysis throughout the county.
Secondary Address Matching
Mercer County includes 184,312 matched secondary addresses linked to parcel records, covering unit numbers, alternate mailing locations, condos/apartments, and other non-primary addresses. This enhanced address layer improves geocoding accuracy, parcel matching, and property analysis. The most recent update for this data is February 15, 2026.
Standardized Zoning Coverage
Mercer County has 115,432 parcels with standardized zoning coverage in its property dataset, meaning zoning codes and descriptions have been cleaned and normalized across all county parcels for consistent land-use classification and analysis. This zoning data was most recently updated on February 15, 2026, enabling analysts and planners to use zoning attributes reliably for mapping, property assessment, and GIS workflows.
Mercer County New Jersey Cities Overview (2026 Estimates)
Mercer County, New Jersey’s 2026 cities overview shows it comprises 13 incorporated municipalities with a total estimated county population of about 385,000 in 2026. The largest township is Hamilton with approximately 96,013 residents, followed by Trenton, Ewing, West Windsor, and Princeton, reflecting a mix of urban centers and suburban communities across the county.
| Rank | City | Population (2024 Est.) | Previous (2020) | Growth % | Density (per sq mi) | Area (sq mi) | Type |
|---|
FAQ's
How can I search for property information in Mercer County?
When and how are property assessments conducted in Mercer County?
Property assessments in Mercer County are typically updated annually. The county evaluates residential and commercial properties based on market trends, building improvements, and comparable sales to determine accurate assessed values for taxation.
What are the due dates for paying property taxes?
Mercer County sets property tax due dates in line with its annual billing cycle. Homeowners should check the county’s official website for the current schedule to avoid penalties and ensure timely payment.
How are property taxes calculated in Mercer County?
Taxes are calculated based on a property’s assessed value and the combined tax rates for local municipalities, schools, and county services. Assessment ratios and exemptions may also affect the final tax amount.
What property notices should residents expect in Mercer County?
Homeowners receive several key notices annually, including valuation notices (showing assessed value), proposed tax statements (estimating next year’s taxes), and official tax bills, ensuring transparency and timely payments.