Linn County area

Population and density of Linn County

The Census Bureau estimates that 132,843 people lived in Linn County on July 1, 2025. That ranks #503 of 3,222 county equivalents nationally and #8 of 36 in Oregon. Since the April 1, 2020 estimates base of 128,607, the population has grown by 4,236 (+3.3%), compared with +0.9% for Oregon as a whole.

With 2,289.5 square miles of land, that is 58 people per square mile (22 per km²), placing Linn County #1,415 nationally for density and #12 in Oregon. The median county equivalent has 47 people per square mile; the Oregon median is 25. Put another way, there are about 11 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 Linn County

15 incorporated places lie at least partly in Linn County. Together they are home to 94,341 people (71%); the other 38,502 (29%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Albany city, with 47,669 residents in the county (the city extends into 1 other county). Among places with at least 1,000 residents in 2020, Millersburg city grew fastest since then (+17.5%).

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

Metropolitan area

Linn County is a central county of the Albany, OR Metropolitan Statistical Area. Linn County is the area’s only county equivalent, so the metro area has the same 2,289.5 square miles of land. By combined land it ranks #142 of 393 metropolitan areas, and #318 by population. It belongs to the Portland-Vancouver-Salem, OR-WA Combined Statistical Area.

ZIP codes

22 ZIP Code Tabulation Areas have land in Linn County; 16 of them have most of their land inside the county, and the others mainly cover neighboring areas.

97321973229732797329973339733597336973459734697348973509735297355973589736097374973779738397386973899744697759

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 Linn County

Linn County shares a land border with 6 county equivalents. It has more land than 4 of them. The largest neighbor is Lane County (4,554.1 mi²) and the smallest is Benton County (675.2 mi²). Together with its neighbors, Linn County forms a block of 14,239.9 mi² of land, of which it holds 16.1%.

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

Linn County has more land than 2 of the 50 states. It is about 1.2 times the land area of Delaware (1,948.6 mi²), while Connecticut, the next larger state, has 2.1 times as much land (4,842.5 mi²). Oregon’s county land could hold about 42 areas the size of Linn County.

Another way to picture it: the same land area would fill a square about 47.8 miles (77 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 Linn County?

Linn County has more land than 2,978 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 Linn County at #266 nationally by total area, 22 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 0.8%, compared with a national county-equivalent median of 1.2% — 0.3 percentage points lower. 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 Linn 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.