Cathlamet's housing stock reflects its small size and river-town character. Older homes and early- to mid-century houses sit near the downtown and along tree-lined streets, while newer neighborhoods and buildable parcels on the town's edges offer more recent construction. River and Puget Island properties, along with some waterfront lots, add a distinctive local option, and the surrounding county includes acreage and forested parcels for those seeking space. As the county seat and only incorporated town, Cathlamet concentrates most of Wahkiakum County's services and commerce, giving its modest housing market an outsized role in the county. The result is a small-town mix of established homes, newer lots, and occasional river-view properties.

Cathlamet is compact, with its neighborhoods arranged around Main Street and the streets that climb gently from the Columbia River. The downtown and civic core hold the county courthouse, shops, and the town's older homes, while residential streets such as those near Columbia Street and Second and Third Streets contain a mix of established houses. Newer residential areas and level buildable lots ring the town's edges, some with views toward the river or the nearby golf course. Puget Island, reached by a short bridge, adds riverside and rural living just beyond the town. Rather than large formal subdivisions, Cathlamet's character comes from its small, walkable blocks and its setting between river and forested hills.

Cathlamet offers a quiet, river-oriented small-town life at the heart of one of Washington's least populous counties. The Columbia River and Puget Island set the community's rhythm, with fishing, boating, and the daily crossings of the historic county ferry part of the local landscape. A compact Main Street area, a community pool, and neighborhood parks anchor everyday life, while the surrounding timberlands and river channels give the town a distinctly rural Pacific Northwest feel. Residents value the slow pace and close-knit character, and the ferry link to Oregon plus State Route 4 toward Longview keep the larger world within reach without crowding the town itself.

Cathlamet is served by the Wahkiakum School District, a small K-12 district based in the town. Julius A. Wendt Elementary School and John C. Thomas Middle School serve the earlier grades, and Wahkiakum High School completes the pathway, all within the compact town. The district enrolls a few hundred students, giving it the intimate scale typical of rural Washington counties, with small class sizes and close community ties. As the only incorporated town in the county, Cathlamet is the natural hub for the district, drawing students from the surrounding river communities and Puget Island.

Cathlamet sits on State Route 4, the Ocean Beach Highway, which follows the north bank of the Columbia River and connects the town eastward toward Longview and the Interstate 5 corridor, and westward toward the coast. State Route 409 leads from the town toward Puget Island, where the Wahkiakum County ferry crosses the Columbia to Westport, Oregon, providing the direct link to the Oregon coast and Astoria. This combination of highway and ferry gives Cathlamet two distinct regional connections unusual for a town of its size. Within town, the compact street grid is walkable, while most longer trips rely on the ferry or State Route 4.

Cathlamet's recreation is tied to the Columbia River and its small-town amenities. The town operates a swimming pool with lessons and aquatic programs, along with several neighborhood and riverside parks. The Cathlamet Golf Course sits at the edge of town, and the riverfront and Puget Island offer fishing, boating, and wildlife viewing, with the county ferry providing a scenic crossing to Oregon. The surrounding Wahkiakum County countryside adds hiking, hunting, and birdwatching among its sloughs and timberlands. Community events and the county's pioneer heritage round out a recreation scene centered on the outdoors and the river rather than large commercial attractions.