Lake County area

Lake County, Oregon covers 8,358.1 square miles: 8,138.6 square miles of land and 219.5 square miles of water. Its county seat is Lakeview. An estimated 8,187 people lived there in 2025.

Official Census measurements · GEOID 410372026 Gazetteer · retrieved September 27, 2026
Land area8,138.6 mi²
Water area219.5 mi²
Population (2025)8,187
People per mi²1

County outline

Generalized outline of Lake County, Oregon
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Lake County is located

Lake County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 97.4% of Lake County’s measured area and water for 2.6%. Its combined area converts to 21,647.4 square kilometers or approximately 5,349,187 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land8,138.6221,078.9295,208,716.8
Water219.484568.461140,469.8
Total8,358.10421,647.395,349,186.6

How Lake County compares

By original Census land area, Lake County ranks #3 of 36 in Oregon and #33 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 4.457 times the Oregon county-equivalent median of 1,826.2 square miles. It accounts for 8.5% of the combined county land area in the state.

See the complete Oregon ranking · What counts as a county equivalent?

Population and density of Lake County

The Census Bureau estimates that 8,187 people lived in Lake County on July 1, 2025. That ranks #2,636 of 3,222 county equivalents nationally and #30 of 36 in Oregon. Since the April 1, 2020 estimates base of 8,162, the population has grown by 25 (+0.3%), compared with +0.9% for Oregon as a whole.

With 8,138.6 square miles of land, that is 1 people per square mile (0.39 per km²), placing Lake County #3,149 nationally for density and #34 in Oregon. The median county equivalent has 47 people per square mile; the Oregon median is 25. Put another way, there are about 636 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate8,1708,2858,3468,3028,1678,187
Change—+115+61−44−135+20

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Lake County

2 incorporated places lie at least partly in Lake County. Together they are home to 2,667 people (32.6%); the other 5,520 (67.4%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Lakeview town, with 2,419 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Lakeview townCounty seat2,419−0.4%2.512
Paisley city248+0.8%0.42

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Lake County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Lake County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.

ZIP codes

10 ZIP Code Tabulation Areas have land in Lake County; 8 of them have most of their land inside the county, and the others mainly cover neighboring areas.

97620976309763597636976379763897640976419773597758

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Lake County

Lake County shares a land border with 5 county equivalents, including 2 in California and Nevada. It has more land than 4 of them. The largest neighbor is Harney County (10,134.5 mi²) and the smallest is Deschutes County (3,017.6 mi²). Together with its neighbors, Lake County forms a block of 37,504.7 mi² of land, of which it holds 21.7%.

Map of Lake County and the 5 county equivalents that border it Harney County, Oregon: 10,134.5 mi² landKlamath County, Oregon: 5,949.9 mi² landDeschutes County, Oregon: 3,017.6 mi² landModoc County, California: 3,948.2 mi² landWashoe County, Nevada: 6,315.9 mi² land
Lake County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. LakeCompare
Harney County10,134.51.2× largerCompare
Washoe CountyNevada6,315.91.3× smallerCompare
Klamath County5,949.91.4× smallerCompare
Modoc CountyCalifornia3,948.22.1× smallerCompare
Deschutes County3,017.62.7× smallerCompare

How big is Lake County compared with U.S. states?

Lake County has more land than 6 of the 50 states. It is about 1 times the land area of Massachusetts (7,801 mi²), while New Hampshire, the next larger state, has 1.1 times as much land (8,954 mi²). Oregon’s county land could hold about 12 areas the size of Lake County.

Land area: Lake County and the closest-sized states
Massachusetts7,801 mi²
Lake County8,138.6 mi²
New Hampshire8,954 mi²

Another way to picture it: the same land area would fill a square about 90.2 miles (145.2 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Lake County?

Lake County has more land than 3,189 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Lake County8,138.6 mi²
Oregon median1,826.2 mi²
National median604.5 mi²

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Lake County at #39 nationally by total area, 6 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 2.6%, compared with a national county-equivalent median of 1.2% — 1.5 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Lake County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#32Idaho County, Idaho8,477.5Compare
#33Lake County, Oregon8,138.6This county
#34Kern County, California8,134.7Compare

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.

Representative coordinates

The Census internal point is 42.788401, -120.389790. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.

Source and precision

U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 21,078,928,522 m²; AWATER: 568,462,033 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Lake County?

Lake County, Oregon has 8,138.6 square miles (21,078.9 km²) of land and 219.5 square miles of water, for a total area of 8,358.1 square miles. It ranks #33 of 3,222 U.S. county equivalents by land area.

Is Lake County the largest county in Oregon?

No. Lake County ranks #3 of 36 in Oregon by land area. The largest is Harney County, with 10,134.5 square miles of land.

What counties border Lake County?

Lake County shares a land border with Harney County, Klamath County, Deschutes County, Modoc County, California, and Washoe County, Nevada.

What is the population of Lake County?

The Census Bureau estimates Lake County had 8,187 residents on July 1, 2025, ranking #2,636 of 3,222 county equivalents. That is 1 people per square mile of land.

What is the county seat of Lake County?

The county seat of Lake County is Lakeview.

What cities and towns are in Lake County?

Lake County has 2 incorporated places. The most populous are Lakeview town and Paisley city; 5,520 residents live outside any incorporated place.

Is Lake County part of a metropolitan area?

No. Lake County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.

How many ZIP codes are in Lake County?

10 ZIP Code Tabulation Areas have land in Lake County, and 8 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Lake County compare with U.S. states?

It has more land than 6 of the 50 states, including Massachusetts (7,801 square miles of land).

How many acres of land are in Lake County?

The land measurement converts to approximately 5,208,717 acres. Including water, total area is approximately 5,349,187 acres. One square mile equals 640 acres.

Why might another source show a different area?

Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.

Can this establish a property boundary?

No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.

Cite this county

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