Tillamook County area

Population and density of Tillamook County

The Census Bureau estimates that 27,384 people lived in Tillamook County on July 1, 2025. That ranks #1,578 of 3,222 county equivalents nationally and #22 of 36 in Oregon. Since the April 1, 2020 estimates base of 27,385, the population has declined by 1 (−0%), compared with +0.9% for Oregon as a whole.

With 1,103.2 square miles of land, that is 25 people per square mile (9.6 per km²), placing Tillamook County #2,149 nationally for density and #19 in Oregon. The median county equivalent has 47 people per square mile; the Oregon median is 25. Put another way, there are about 26 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 Tillamook County

7 incorporated places lie at least partly in Tillamook County. Together they are home to 10,167 people (37.1%); the other 17,217 (62.9%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Tillamook city, with 5,162 residents in the county. Among places with at least 1,000 residents in 2020, Bay City city grew fastest since then (+0.3%).

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

Metropolitan area

Tillamook 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

16 ZIP Code Tabulation Areas have land in Tillamook County; 13 of them have most of their land inside the county, and the others mainly cover neighboring areas.

97102971079710897112971189712297130971319713497135971369714197147971499734797368

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 Tillamook County

Tillamook County shares a land border with 5 county equivalents. It has more land than every one of them. The largest neighbor is Lincoln County (981 mi²) and the smallest is Yamhill County (715.9 mi²). Together with its neighbors, Tillamook County forms a block of 5,093.5 mi² of land, of which it holds 21.7%.

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

Tillamook County has more land than 1 of the 50 states. It is about 1.1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.8 times as much land (1,948.6 mi²). Oregon’s county land could hold about 87 areas the size of Tillamook County.

Another way to picture it: the same land area would fill a square about 33.2 miles (53.5 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 Tillamook County?

Tillamook County has more land than 2,647 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 Tillamook County at #514 nationally by total area, 61 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 17.2%, compared with a national county-equivalent median of 1.2% — 16 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 Tillamook 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.