Parcel numbers · Assessor lookup · October 12, 2026
How to Find Parcel Number by Address
How to find a parcel number by address: use free county GIS or assessor lookup, read it on your tax bill, and learn what an APN is.
Tax bills, building permits, title work and county GIS searches all lean on one short string of numbers and letters: your parcel number. If you only know the street address, you can still look it up for free in most counties. This guide covers how to find a parcel number by address using the assessor site, the GIS parcel map, your tax bill and closing papers — and what to do when the address returns more than one result.
What a parcel number is
A parcel number is the identifier the tax assessor assigns to a tax parcel. Counties use different labels for the same idea:
- APN — assessor's parcel number
- PIN — parcel identification number
- Tax map number / map-block-lot — common in some Eastern counties
- Parcel ID — generic label on many GIS viewers
Formats vary: some are all digits, others mix digits with dashes or dots. See what an APN number is and APN, PIN and parcel ID lookup for the naming differences. The important part is that the county’s system treats that string as the key to ownership, assessed value and map outline — not the street address alone.
1. Search the county assessor by address
Start with the assessor or property appraiser website for the county where the land sits (city assessors exist in some places too).
- Use the property search or “search by address” box. Enter the house number and street name; try with and without the street type (St, Ave, Rd) if the first try fails.
- Read the parcel ID / APN on the result card or detail page. Copy it exactly, including dashes.
- Open the map or aerial when the site offers one, so you confirm you landed on the right lot and not a neighbor with a similar number.
If the assessor search is down or requires an account, jump to the GIS map method below. For deeper searches once you have the number, see county property search by parcel number.
2. Use the free county GIS or parcel map
Most counties publish an interactive map that shows parcel outlines. Open the Platbookmapper land map, pick your state and county, and use the free viewer (no login when the county offers one).
- Search by address in the map’s search box, or click the building on the aerial.
- Select the parcel and read the popup or sidebar for the parcel ID / APN.
- Turn on parcel lines and labels so you can see whether the address point sits inside the outline you expect.
Our guide on how to find a parcel number on a map walks through reading those labels. Treat the GIS outline as a map, not a survey stake.
3. Read it off the tax bill or assessment notice
If you already own the property, the fastest paper source is often sitting in a drawer:
- Property tax bill — nearly always prints the parcel / APN near the owner name and legal description.
- Annual assessment notice — same identifier, sometimes with the prior year’s number if the county renumbered parcels.
- Closing documents and title commitment — Schedule A or the property detail page usually lists the tax parcel ID.
Parcel numbers can change after splits, combinations or county remapping. If an old bill disagrees with today’s GIS, trust the current assessor record and see do parcel numbers change.
When the address search gets messy
- Multiple parcels for one address. A house plus a vacant side lot, a split after you bought, or commercial units can share a street number. Compare map outlines and legal descriptions before you pick one.
- New construction or vanity addresses. Fresh builds may still be indexed under a parent tract or a temporary ID. Search by owner name or nearby intersection on the GIS map.
- Rural routes and unnamed roads. Try the road name the assessor uses, not only the postal city-style address, or click the parcel on the aerial.
- Google Maps is not the assessor. It will not give you an official APN. Use it only to orient yourself, then copy the number from county records.
Assessor vs recorder: who has what
The assessor maintains tax parcels, values and the parcel number. The recorder (or clerk / register of deeds) keeps recorded deeds, plats and easements. You usually get the parcel number from the assessor or GIS first, then use it — or the owner name and legal description — to pull documents from the recorder. See assessor vs recorder for the split in roles.
What to do once you have the number
- Save it with the county name; the same digit string can mean something else in the next county over.
- Pull the GIS parcel record for acreage, zoning links and map prints.
- Search the recorder by owner name or document number for the deed and plat.
- Use it on permit and utility forms that ask for APN or tax parcel ID.
Finding a parcel number by address: FAQ
How do I find my parcel number by address for free?
Open your county assessor or GIS website, search the street address, and read the parcel ID, APN or PIN on the result. Many counties also print it on the property tax bill.
Is a parcel number the same as an APN?
Often yes. APN (assessor's parcel number), PIN, tax map number and parcel ID are local names for the same idea: the tax parcel identifier. Formats differ by county.
Why does my address return more than one parcel?
An address can sit on a lot that was split, include a building with multiple tax units, or match a nearby parcel with a similar street number. Confirm with the map outline and legal description.
Can I find a parcel number on Google Maps?
Google Maps shows streets and buildings, not official tax parcel IDs. Use the county GIS or assessor lookup for the number, then you can compare the outline to an aerial view.
Where else is my parcel number printed?
On property tax bills, assessment notices, many deeds and title commitments, and sometimes on building permits. Closing paperwork from purchase usually lists it too.
What if the assessor site needs a login?
Try the county GIS map viewer first; many show parcel IDs without an account. If both require login or fees, call the assessor with the address and ask them to read the parcel number to you.