- Parcels
- 141,974
- County FIPS
- 34021
- Snapshot
- October 30, 2026
What property data is available for Mercer County?
| Dataset | Mercer County |
|---|---|
| Parcel boundaries | 141,974 parcels |
| Tax assessor records | 113,571 records (80% of parcels) |
| Owner name and mailing address | 0% of assessor records |
| Market or assessed value | 0% of assessor records |
| Year built | 100% of assessor records |
| Last sale date | 104% of assessor records |
| Building permits | 82,517 permits since 1990, latest July 7, 2026 |
| Roofing permits | Not yet |
| Zoning | Not yet |
| Buildable-area screens | Yes |
| Historic designations | 116 |
| Adopted building codes | 1 jurisdiction |
| Hail history (radar) | Yes, every county in the contiguous US |
How do I query Mercer County property data?
Bulk-search every parcel in the county with `search_properties` using `state: "NJ"` and `county: "021"` (the county FIPS code 34021), or look up one address with `search_parcels`. Check any single property for free with `check_availability`.
{
"name": "count_properties",
"arguments": { "state": "NJ", "county": "021" }
}Frequently asked questions
How do I find who owns a property in Mercer County?
Search the address on the Mercer County assessor's website, or query Parceled's `search_parcels` for owner name and mailing address. See how to find a property owner by address.