County outline
Where Lake County is located
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
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 8,138.62 | 21,078.929 | 5,208,716.8 |
| Water | 219.484 | 568.461 | 140,469.8 |
| Total | 8,358.104 | 21,647.39 | 5,349,186.6 |
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.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 8,170 | 8,285 | 8,346 | 8,302 | 8,167 | 8,187 |
| 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 place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Lakeview townCounty seat | 2,419 | −0.4% | 2.512 |
| Paisley city | 248 | +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%.
| Bordering county equivalent | Land mi² | Size vs. Lake | Compare |
|---|---|---|---|
| Harney County | 10,134.5 | 1.2× larger | Compare |
| Washoe CountyNevada | 6,315.9 | 1.3× smaller | Compare |
| Klamath County | 5,949.9 | 1.4× smaller | Compare |
| Modoc CountyCalifornia | 3,948.2 | 2.1× smaller | Compare |
| Deschutes County | 3,017.6 | 2.7× smaller | Compare |
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.
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.
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 rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #32 | Idaho County, Idaho | 8,477.5 | Compare |
| #33 | Lake County, Oregon | 8,138.6 | This county |
| #34 | Kern County, California | 8,134.7 | Compare |
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.
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.