Skamania County area

Population and density of Skamania County

The Census Bureau estimates that 12,669 people lived in Skamania County on July 1, 2025. That ranks #2,309 of 3,222 county equivalents nationally and #34 of 39 in Washington. Since the April 1, 2020 estimates base of 12,031, the population has grown by 638 (+5.3%), compared with +3.8% for Washington as a whole.

With 1,658.3 square miles of land, that is 7.6 people per square mile (2.9 per km²), placing Skamania County #2,734 nationally for density and #35 in Washington. The median county equivalent has 47 people per square mile; the Washington median is 39. Put another way, there are about 84 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 Skamania County

2 incorporated places lie at least partly in Skamania County. Together they are home to 3,011 people (23.8%); the other 9,658 (76.2%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Stevenson city, with 1,596 residents in the county. By land, North Bonneville city is the largest at 2.525 mi². Among places with at least 1,000 residents in 2020, Stevenson city grew fastest since then (+7.8%).

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

Metropolitan area

Skamania County is an outlying county of the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area. Its 7 county equivalents have 2,542,282 residents on 6,687.4 square miles of land; Skamania County accounts for 24.8% of the land and 0.5% of the residents. By combined land it ranks #28 of 393 metropolitan areas, and #26 by population. It belongs to the Portland-Vancouver-Salem, OR-WA Combined Statistical Area.

ZIP codes

8 ZIP Code Tabulation Areas have land in Skamania County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.

9860598610986169863998648986519867198672

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 Skamania County

Skamania County shares a land border with 7 county equivalents, including 2 in Oregon. It has more land than 4 of them. The largest neighbor is Yakima County (4,294.5 mi²) and the smallest is Multnomah County (431 mi²). Together with its neighbors, Skamania County forms a block of 12,950.1 mi² of land, of which it holds 12.8%.

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

Skamania County has more land than 1 of the 50 states. It is about 1.6 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.2 times as much land (1,948.6 mi²). Washington’s county land could hold about 40 areas the size of Skamania County.

Another way to picture it: the same land area would fill a square about 40.7 miles (65.5 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 Skamania County?

Skamania County has more land than 2,858 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 Skamania County at #399 nationally by total area, 35 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 1.7%, compared with a national county-equivalent median of 1.2% — 0.5 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 Skamania 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.