2 counties indexed. ArcGIS FeatureServer and MapServer URLs, with supported search fields per layer.
| County | Endpoints | Searchable fields | Status | Action |
|---|---|---|---|---|
| Clark County | 1 | Assessor Parcel Number | LIVE | OPEN |
| Washoe County | 1 | Assessor Parcel Number · Owner First Name · Owner Last Name +2 | LIVE | OPEN |
Nevada has 16 counties plus Carson City, an independent city-county. It is one of the least-subdivided states in the US by county count. This low county count produces a sharp population concentration: Clark County (Las Vegas metro) holds roughly 73% of Nevada's total population; Washoe County (Reno) holds another 18%. The remaining 14 counties together cover the vast majority of Nevada's land area but a small fraction of its population. Nevada County Assessors handle parcel valuation; there is no statewide parcel REST layer. Clark County's public parcel MapServer exposes geometry and APN but redacts owner names from the public layer — ownership requires a separate Assessor portal query. Washoe County, by contrast, exposes full owner names (as split FIRSTNAME + LASTNAME fields) on its public MapServer, along with 71 fields of attribute data including zoning, sale price, year built, and appraised value.
Nevada has no statewide parcel aggregation layer. The Nevada Bureau of Mines and Geology (NBMG) at gisweb.unr.edu hosts state geologic and land-use data, and the Nevada Division of Water Resources maintains some spatial data, but neither hosts cadastral parcel data. County Assessors publish GIS services independently. Clark County Geographic Information Systems Management Office (GISMO) operates the county GIS at clarkcountynv.gov, with open-data at clarkcountygis-ccgismo.hub.arcgis.com. Washoe County GIS operates at wcgisweb.washoecounty.us with open data at explore-washoe.opendata.arcgis.com. Carson City (independent city) has its own assessor and GIS. The 14 smaller counties — Churchill, Douglas, Elko, Esmeralda, Eureka, Humboldt, Lander, Lincoln, Lyon, Mineral, Nye, Pershing, Storey, White Pine — have varying levels of GIS infrastructure; many have no public parcel REST layer.
Clark County's AssessorMapv2/MapServer/1 is a geometry layer: it exposes APN (11-digit, no dashes or spaces in this layer), PARCELTYPE, TAX_DIST, CALC_ACRES, and ASSR_ACRES — but not owner name, mailing address, or assessed value. For owner lookups, use the Clark County Assessor's free web portal at clarkcountynv.gov/government/assessor/property_search/ (owner name search is available) or the Real Property Records Search at the same domain. Bulk ownership data from the Assessor requires a paid subscription. The Clark County Assessor's APN format uses dashes in the human-readable version (e.g., 138-18-211-001) but the REST layer stores them without punctuation. Account for this when cross-referencing with county tax records.
Washoe County's public MapServer/0 at wcgisweb.washoecounty.us exposes owner data as two separate fields: FIRSTNAME and LASTNAME. This split-field approach is unusual — most counties with public owner data use a single concatenated OWNER_NAME field. For owner name queries, you can search either field independently: LASTNAME+LIKE+'SMITH%25' returns surname matches (note: Washoe uses LIKE with a trailing wildcard without UPPER(), per the confirmed sample query). The layer has 71 fields total including APN, MAILING1/2, MAILCITY, MAILSTATE, MAILZIP, TOTALASS, TOTALAPR, SALEPRICE, SALEDATE, YEARBLT, SQFEET, BEDROOMS, BATHS, ACREAGE, Zoning, WATER, SEWER, and NBHD.
Nevada's 14 rural counties (Elko, Nye, Humboldt, Churchill, Douglas, Lyon, and others) collectively cover most of Nevada's 110,000 square miles but have a combined population under 400,000. GIS capacity in these counties ranges from thin to nonexistent. Counties like Elko and Nye may have an assessor portal but no public ArcGIS REST endpoint. Esmeralda County (pop. ~700, the least-populated county in Nevada) has no county GIS operation. If your project covers rural Nevada, plan for manual assessor-portal lookups rather than REST automation. The Nevada Division of State Lands and the Bureau of Land Management manage large portions of rural Nevada acreage that does not appear in county assessor records at all.
Las Vegas metro (pop. 2.3M, ~73% of Nevada population). AssessorMapv2/MapServer/1 at maps.clarkcountynv.gov. APN, PARCELTYPE, TAX_DIST, CALC_ACRES present; owner name NOT on public REST layer. For ownership, use the free Assessor portal at clarkcountynv.gov. 947,045 parcels. GISMO open-data hub at clarkcountygis-ccgismo.hub.arcgis.com.
Reno-Sparks metro (pop. 480,000). OpenData/OpenData/MapServer/0 at wcgisweb.washoecounty.us. 71 fields: FIRSTNAME, LASTNAME, APN, MAILING1/2, TOTALASS, TOTALAPR, SALEPRICE, SALEDATE, YEARBLT, SQFEET, Zoning, ACREAGE. Owner data is public; split into FIRSTNAME + LASTNAME. Owner queries confirmed live.
Clark County APN query (geometry only): ?where=APN+LIKE+'138%25'&outFields=APN,PARCELTYPE,ASSR_ACRES,TAX_DIST&returnGeometry=false&f=json&resultRecordCount=10 (base: maps.clarkcountynv.gov/arcgis/rest/services/GISMO/AssessorMapv2/MapServer/1). Washoe County owner search by last name: ?where=LASTNAME+LIKE+'SMITH%25'&outFields=APN,FIRSTNAME,LASTNAME,STREET,STREETNUM,CITY,SITUSZIP,TOTALASS,LAND_USE,SALEPRICE&returnGeometry=false&f=json&resultRecordCount=10 (base: wcgisweb.washoecounty.us/arcgis/rest/services/OpenData/OpenData/MapServer/0). Washoe by address: ?where=UPPER(STREET)+LIKE+UPPER('%25MAIN%25')+AND+CITY='RENO'&outFields=APN,FIRSTNAME,LASTNAME,STREETNUM,STREET,TOTALASS&returnGeometry=false&f=json.
Last updated 2026-05-24.
2 Nevada counties are indexed in the UrbanKit atlas with verified public REST endpoints: Clark and Washoe. Washoe expose owner-name search; Clark index by parcel ID and address only.
Washoe expose an owner-name field on the public REST layer. Washoe, for example, uses the FIRSTNAME field — a case-insensitive search is ?where=UPPER(FIRSTNAME)%20LIKE%20UPPER('%25SMITH%25')&outFields=*&f=json. Clark index by parcel ID and address only, so owner lookups there go through the county assessor or appraiser. Open a county's page here for its full field list and a ready-to-run sample query.
Clark publishes parcels at https://maps.clarkcountynv.gov/arcgis/rest/services/GISMO/AssessorMapv2/MapServer/1 — a MapServer (layer 1). It indexes by Assessor Parcel Number.
Nevada's indexed counties (Clark and Washoe) publish county-hosted ArcGIS MapServer layers. MapServer supports the same /query operation for owner, parcel-ID, and address lookups as FeatureServer — for read-only parcel lookups the two are interchangeable.
Listing missing or moved? Tell us — we verify and update weekly.