Klamath County area

Population and density of Klamath County

The Census Bureau estimates that 70,274 people lived in Klamath County on July 1, 2025. That ranks #800 of 3,222 county equivalents nationally and #15 of 36 in Oregon. Since the April 1, 2020 estimates base of 69,408, the population has grown by 866 (+1.2%), compared with +0.9% for Oregon as a whole.

With 5,949.9 square miles of land, that is 12 people per square mile (4.6 per km²), placing Klamath County #2,580 nationally for density and #24 in Oregon. The median county equivalent has 47 people per square mile; the Oregon median is 25. Put another way, there are about 54 acres of land per resident.

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 Klamath County

5 incorporated places lie at least partly in Klamath County. Together they are home to 24,899 people (35.4%); the other 45,375 (64.6%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Klamath Falls city, with 22,111 residents in the county.

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

Metropolitan area

Klamath County is a central county of the Klamath Falls, OR Micropolitan Statistical Area. Klamath County is the area’s only county equivalent, so the micro area has the same 5,949.9 square miles of land. By combined land it ranks #15 of 542 micropolitan areas, and #110 by population.

ZIP codes

18 ZIP Code Tabulation Areas have land in Klamath County; 17 of them have most of their land inside the county, and the others mainly cover neighboring areas.

976019760397604976219762297623976249762597626976279763297633976349763997731977339773797739

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 Klamath County

Klamath County shares a land border with 7 county equivalents, including 2 in California. It has more land than 5 of them. The largest neighbor is Lake County (8,138.6 mi²) and the smallest is Jackson County (2,783.3 mi²). Together with its neighbors, Klamath County forms a block of 39,706.2 mi² of land, of which it holds 15%.

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

Klamath County has more land than 3 of the 50 states. It is about 1.2 times the land area of Connecticut (4,842.5 mi²), while Hawaii, the next larger state, has 1.1 times as much land (6,422.6 mi²). Oregon’s county land could hold about 16 areas the size of Klamath County.

Another way to picture it: the same land area would fill a square about 77.1 miles (124.1 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 Klamath County?

Klamath County has more land than 3,160 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 Klamath County at #62 nationally by total area, the same position as its land rank. Changing the area definition does not change its position in this release.

Its water share is 3.1%, compared with a national county-equivalent median of 1.2% — 1.9 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 Klamath County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.