County GIS · State lines · October 19, 2026
California–Nevada Border Counties: Parcel Maps on Both Sides
All 18 counties on the California–Nevada line, with seats, 2023 populations and a link to each official parcel map, plus what changes at the state line.
Looking for the counties on the California–Nevada border and their parcel maps? According to the Census Bureau's county adjacency file, 10 California counties touch 7 Nevada counties and 1 independent city along the line. Each one keeps its own property records and its own parcel viewer, so land near the line often means checking two counties in two states.
Below you will find every county on both sides of the line, who borders whom, and what changes when you cross from one records office to the other.
California–Nevada border at a glance
- Counties on the line: 18 (10 in California, 8 in Nevada)
- With a verified public parcel viewer in our directory: 18 of 18
- Residents, 2023 estimates: about 2,986,719 on the California side and 3,065,743 on the Nevada side
- Most populous on each side: San Bernardino County, CA (2,195,611) and Clark County, NV (2,336,573)
- Largest by land area: San Bernardino County, CA (20,068 sq mi) and Nye County, NV (18,182 sq mi)
California counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Alpine County | Markleeville | 738 | 1,141 | ArcGIS |
| El Dorado County | Placerville | 1,708 | 192,215 | ArcGIS Experience Builder |
| Inyo County | Independence | 10,197 | 18,527 | ArcGIS Web AppBuilder |
| Lassen County | Susanville | 4,541 | 28,861 | ArcGIS Experience Builder |
| Modoc County | Alturas | 3,948 | 8,500 | county web map |
| Mono County | Bridgeport | 3,049 | 13,066 | county web map |
| Nevada County | Nevada City | 958 | 102,037 | ArcGIS Experience Builder |
| Placer County | Auburn | 1,407 | 423,561 | ArcGIS Experience Builder |
| San Bernardino County | San Bernardino | 20,068 | 2,195,611 | county web map |
| Sierra County | Downieville | 953 | 3,200 | county web map |
Nevada counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Carson City | — | 145 | 58,036 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Clark County | Las Vegas | 7,892 | 2,336,573 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Douglas County | Minden | 710 | 49,545 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Esmeralda County | Goldfield | 3,582 | 736 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Lyon County | Dayton, Yerington | 2,003 | 62,583 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Mineral County | Hawthorne | 3,751 | 4,528 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Nye County | Tonopah | 18,182 | 55,720 | County Parcels in Nevada layer in ArcGIS Map Viewer |
| Washoe County | Reno | 6,316 | 498,022 | County Parcels in Nevada layer in ArcGIS Map Viewer |
Which counties face each other
Here is who borders whom across the line, based on the Census Bureau adjacency file:
- Alpine County, CA borders Douglas County, NV
- El Dorado County, CA borders Douglas County, NV
- Inyo County, CA borders Clark County, NV, Esmeralda County, NV, Nye County, NV
- Lassen County, CA borders Washoe County, NV
- Modoc County, CA borders Washoe County, NV
- Mono County, CA borders Douglas County, NV, Esmeralda County, NV, Lyon County, NV, Mineral County, NV
- Nevada County, CA borders Washoe County, NV
- Placer County, CA borders Carson City, NV, Douglas County, NV, Washoe County, NV
- San Bernardino County, CA borders Clark County, NV
- Sierra County, CA borders Washoe County, NV
What changes when you cross the line
- Different viewers. On the California side the official maps run on: ArcGIS Experience Builder (4); county web map (4); ArcGIS (1); ArcGIS Web AppBuilder (1). On the Nevada side: County Parcels in Nevada layer in ArcGIS Map Viewer (8). Search boxes, parcel ID formats and the details shown in pop-ups will differ.
- Different records offices. Deeds, plats and tax bills are kept by the county where the parcel sits.
- Different rules. Zoning, septic permits and property tax are set locally and by each state, so check with the county on the side where you plan to build or buy.
Researching a tract that crosses the line
- Find the parcel in both counties' viewers. Each side will show only its own piece, with its own parcel number.
- Pull the recorded deed from each county's register or recorder, since each county records only the land inside its own boundary.
- Expect two tax bills, one from each county, and check each state's rules for homestead or farm exemptions.
- For a sale, a fence or a building permit, hire a licensed surveyor familiar with the line; tax-map lines are drawings, not surveys.
A quick way to check which side a spot is on
Open the Platbookmapper Land Map, search the nearest county, and tap the spot. The land report shows which county it falls in, along with flood zone, elevation, soil and wetlands, and links to that county's parcel map.
Related guides
- California county GIS websites by viewer
- California plat maps
- Nevada GIS maps by county
- Nevada plat maps
More: California counties · Nevada counties
Sources
- U.S. Census Bureau county adjacency file, used for which counties share the line.
- U.S. Census Bureau Gazetteer files, 2020 county land area.
- U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2023 (July 1, 2023 estimates)
- Platbookmapper county GIS directory (live data file behind our county pages, pulled October 19, 2026) for each county's official parcel viewer.
- County seats: Wikidata (county seat property), cross-checked against Census place names.