Blog · September 24, 2026 · California
Sacramento County, California GIS Parcel Map Guide
The Sacramento County Assessor Parcel Viewer gives free parcel lookups across Sacramento, Elk Grove, Citrus Heights, Folsom, Rancho Cordova, Galt, Isleton and the Delta.
Main page: Sacramento County, CA GIS & Parcel Viewer (official map link, Sacramento County facts and neighboring maps).
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Sacramento County mixes a state capital, big suburbs, river levees and Delta farmland. More than 400,000 parcels appear in the Sacramento County Assessor Parcel Viewer, and each one comes with a map and a set of property details.
Open the official Sacramento County parcel viewer
The Sacramento County Assessor publishes the Parcel Viewer. Start typing an address or an Assessor Parcel Number, pick the match, and the map zooms to the parcel with a details panel. You can also zoom anywhere and click a parcel. Menus cover layers, measuring, search results, a tool for selecting several parcels, a legend and help. The Recent Sales option shows sales activity from the last two years in whatever area you are viewing.
The Assessor’s records pages note what the viewer provides: parcel maps, assessed values, limited property characteristics and supplemental tax estimates. Owner names are not shown online; the Assessor provides them on request. Use the Sacramento entry in our California directory to open the viewer, or find the capital region on our county map.
How a Sacramento APN is built
Sacramento APNs have fourteen digits. The first three are the map book, the next three the page, the seventh a block (zero when there is none), the next three the parcel, and the final four a suffix used for assessment and ownership changes. The book and page point to the Assessor’s parcel map for that area. Tips:
- Type the whole APN; partial numbers can match many parcels.
- Use the book and page to find the Assessor map sheet when you want a printable view of a block.
How to find property lines in Sacramento County
- Find the parcel and note the tract or map reference from its details.
- Get the recorded subdivision map, parcel map or record of survey. The county’s surveyor map tools can display filed maps, recorded documents and corner records.
- Get the deed from the Sacramento County Clerk-Recorder.
- Use a California licensed land surveyor when a fence, addition or dispute is involved.
The Assessor’s parcel maps are for assessment, not boundaries. The recorded subdivision map or record of survey controls.
Levees, rivers and flood zones
Large parts of the county sit behind levees along the Sacramento and American rivers, including Natomas and the Pocket area, and the Delta’s islands are protected by levees maintained by reclamation districts. Some parcels pay district assessments for that protection. Check the flood zone and ask about levee district fees before you buy (flood zones in a parcel viewer).
Values, sales and reassessment
Under California’s Proposition 13, a property is reassessed when it changes hands or new construction is completed, then rises by a limited amount each year. That is why neighbors can pay very different taxes. The viewer’s supplemental tax estimate helps new buyers plan for the extra bill that follows a purchase. The Recent Sales tool shows what nearby homes sold for, which helps when a new assessment or a listing price looks out of line. If you think a value is wrong, the Assessor explains how to request a review, and deadlines apply each year.
The Delta and farmland
South of Freeport and west of I-5, the county turns into Delta farmland with river towns such as Walnut Grove, Locke and Isleton. Many farm parcels there carry Williamson Act contracts, which lower taxes in exchange for keeping land in agriculture. Contracts appear in the property records, not on the map, so ask about them before buying acreage and plan on a longer review if you intend to build.
Cities and unincorporated communities
Sacramento, Elk Grove, Citrus Heights, Folsom, Rancho Cordova, Galt and Isleton are incorporated, and each handles its own zoning. Many well-known communities, including Arden-Arcade, Carmichael, Fair Oaks, Orangevale, Antelope and Rio Linda, are unincorporated, so the county sets zoning and issues permits there. Addresses do not always reveal the difference, because a Sacramento mailing address may lie outside city limits. The parcel details and the county’s planning maps settle which government applies, and that affects building permits, fees and even trash service.
Sacramento County plat book
A commercially printed Sacramento plat book does not seem to exist today. Recorded maps and the Assessor’s parcel map books are the practical equivalents, and the Parcel Viewer is free.
Is the Sacramento County GIS map accurate?
The Assessor publishes a data disclaimer with the viewer. It is good for identifying parcels and comparing neighbors, but its lines are drawn for assessment. When the exact line matters, rely on the recorded map and a survey, and read assessor maps compared with surveys.
Parcel Viewer not loading?
Wait for the address or APN suggestions before pressing search. If the map stays blank, reload or try another browser. Headed toward the foothills? See our Placer County guide, or scan the California GIS hub for the other 57 counties.
Frequently asked questions
How many digits is a Sacramento County APN?
Fourteen: map book, page, block, parcel and a four-digit suffix.
Why can’t I see owner names in the Sacramento Parcel Viewer?
The Assessor does not publish owner names online. Contact the Assessor’s office for ownership information.
Can I see recent home sales on the map?
Yes. The Recent Sales tool shows sales from the past two years in the area you are viewing.
Who records deeds in Sacramento County?
Deeds and other property documents are recorded by the Sacramento County Clerk-Recorder.
Open the official Sacramento County GIS viewer Sacramento County in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey — especially for fences, setbacks, or boundary disputes.