When was Clark County founded?

Clark County was founded in 1909, formed from Lincoln County, and named after William A. Clark.

What is the county seat of Clark County?

The county seat of Clark County is Las Vegas.

Is there an online parcel map for Clark County?

Yes. Clark County, NV Assessor (maps.clarkcountynv.gov GISMO/AssessorMap) publishes a parcel map of 951,761 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Clark County's boundary or name changed?

Clark County was created in 1909 from Lincoln County. Since then the Atlas of Historical County Boundaries records 1 later change, most of them small boundary adjustments, chiefly involving Nye County.

Who issues building permits in Clark County?

The county's page on building permits: Encroachment Permits. Inside a city or town, ask that city first.

Is my lot in a flood zone?

We do not have flood maps for Clark County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 32003

Clark CountyNevada

Clark County is a county in Nevada with its seat in Las Vegas. It was created in 1909 from Lincoln County and named after William A. Clark.

Founded1909
County seatLas Vegas
Named forWilliam A. Clark
Land area7,892 sq mi + 169 sq mi water
Population2,265,461 2020 Census
Parcels mapped951,761 checked 16 October 2026

Open the free map Click any parcel in Clark County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

Where it is

Clark on the map of Nevada

Nevada has 17 counties and county equivalents, each with its own records office. Shapes with a page are links.

Counties of Nevada · Clark highlighted

History

Formed in 1909 from Lincoln County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Clark County was created from Lincoln County on July 1, 1909, when an act passed on February 5, 1909 took effect. In 1985, the boundary between Clark County and Nye County was adjusted to follow public land survey lines.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

1909
Clark County created Clark created from Lincoln. Act passed 5 February 1909; took effect 1 July 1909.
from Lincoln
1 July 1909 · Nev. Stats. 1909, 24th sess., ch. 11/pp. 8-13
1961
Boundary clarified Clark boundary with Mohave (Arizona) was redefined as the result of an Interstate Compact (enacted 24 March 1960 and consented to by the United States on 6 June 1961) "to fix the location of the boundary line between the states of Arizona and Nevada has become indefinite and uncertain because of meanderings in the main channel of the Colorado River".
with Mohaveno change
6 June 1961 · Ariz. Laws 1960, 24th leg., 2d reg. sess., ch. 69/pp. 174-180; Nev. Stats. 1960, p. 145; Mottaz, 47; U.S. Stat., vol. 75 [1961]/p. 93
1985
Changed Boundary between Clark and Nye was adjusted and placed on public land survey lines.
Nye
7 June 1985 · Nev. Stats. 1985, 63rd sess., ch. 551, p. 1654-1655

Land and parcels

What the maps cover in Clark

Who publishes each layer, how good it is, and when we last checked.

Parcels Official

Lot lines and tax-map numbers for 951,761 parcels from Clark County, NV Assessor (maps.clarkcountynv.gov GISMO/AssessorMap). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026
Address points Missing

No public address points layer found for Clark County yet.
Buildings Reference

Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026

Official: from the office that keeps the record
Good enough: a reliable statewide or national copy
Fallback: a guide only; check the official record
Missing: nothing public found yet

People and land

Clark by the Census

Population

2,265,461 2020 Census count

Housing units

917,656 2020 Census count

Land area

7,892 square miles

Water area

169 square miles

People per sq mi

287 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Assessor and property records 702-455-4970from clarkcountynv.gov · checked 15 October 2026
Clerk of court: deeds and platsfrom clarkcountynv.gov · checked 15 October 2026

Permits

Encroachment Permitsfrom clarkcountynv.gov
Offsite Improvement Permitsfrom clarkcountynv.gov
Well Drillers Logfrom water.nv.gov

Zoning and code

Planning and zoning 702-455-3933from clarkcountynv.gov · checked 15 October 2026
ordinancetile2.jpgfrom clarkcountynv.gov

County government

County government
The official website of Clark County.
clarkcountynv.gov

See your own lot on these maps

Open Clark County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

Open the free map no sign-in Pro early access

Questions

Common questions about Clark County

When was Clark County founded?: Clark County was founded in 1909, formed from Lincoln County, and named after William A. Clark.
What is the county seat of Clark County?: The county seat of Clark County is Las Vegas.
Is there an online parcel map for Clark County?: Yes. Clark County, NV Assessor (maps.clarkcountynv.gov GISMO/AssessorMap) publishes a parcel map of 951,761 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Clark County's boundary or name changed?: Clark County was created in 1909 from Lincoln County. Since then the Atlas of Historical County Boundaries records 1 later change, most of them small boundary adjustments, chiefly involving Nye County.
Who issues building permits in Clark County?: The county's page on building permits: Encroachment Permits. Inside a city or town, ask that city first.
Is my lot in a flood zone?: We do not have flood maps for Clark County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

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