Cathlamet, WA Profile: Facts & Data


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Cathlamet, Washington - Basic Facts

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The Town of Cathlamet had a population of 512 as of July 1, 2021.

The primary coordinate point for Cathlamet is located at latitude 46.2032 and longitude -123.3832 in Wahkiakum County. The formal boundaries for the Town of Cathlamet encompass a land area of 0.49 sq. miles and a water area of 0.01 sq. miles. Wahkiakum County is in the Pacific time zone (GMT -8). The elevation is 62 feet.

The Town of Cathlamet has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Town of Cathlamet is located within Cathlamet Division of Wahkiakum County.

Alternate Unofficial Names for Cathlamet: Birnie's Retreat, Birnie's Trading Post, Cathlamah, Kahelamit, Katalamet, Kathlamet.

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  1. Cathlamet 2021 Demographic Data
  2. Growth Rates for Cathlamet (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Washington Research Tools (Easy Tools & Current Data)
  3. Washington Data Comparison Tool - 2021 Demographics

Cathlamet, WA Data & Demographics (As of July 1, 2021)


Total Population 512 (100%)
Population in Households 504 (98.4%)
Population in Families 358 (69.9%)
Population in Group Quarters1 8 ( 1.6%)
Population Density 1,022
Diversity Index2 27


Median Household Income $40,279
Average Household Income $57,289
% of Income for Mortgage4 21%
Per Capita Income $28,825
Wealth Index5 50


Total HU (Housing Units) 305 (100%)
Owner Occupied HU 209 (68.5%)
Renter Occupied HU 59 (19.3%)
Vacant Housing Units 37 (12.1%)
Median Home Value $200,000
Average Home Value $256,190
Housing Affordability Index3 124


Total Households 268
Average Household Size 1.88
Family Households 147
Average Family Size 2
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population -0.34% 0.31%
Households 0.34% 0.3%
Families 0.69% 0.14%
Median Household Income   0.43%
Per Capita Income   1.05%
Owner Occupied HU   0.47%

Cathlamet, WA - Peer Comparisons by Rank and Percentile

The table below compares Cathlamet to the other 625 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2021 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 468 25th
Population Density # 299 52nd
Median Household Income # 582 7th
Housing Affordability Index # 376 60th
Per Capita Income # 430 31st
Diversity Index # 460 26th

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.

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