County

Columbia County, WA

2 ZIP codes  ·  2 cities  ·  Washington

👥3,702Population
💰$71,576Median HH Income≈ Avg
🎂52.4Median Age
🏠$248,740Median Home Value▼ 11% below avg
🎓40.4%College Grads≈ Avg
📊3.7%Unemployment▼ 25% below avg
People & Population (ACS 2023 — weighted avg)
♂ Male 50.6% Female 49.4% ♀

Race & Ethnicity

White: 80%Hispanic: 9.1%Black: 0.8%Asian: 0%Other: 9.8%Race
White80.0%
Hispanic9.1%
Black0.8%
Asian0.0%
Other9.8%

Age Breakdown

Under 5
5%
5–17
11%
18–24
6%
25–44
20%
45–64
28%
65+
14%

Key Indicators

Median Age52.4 yrs
Avg HH Size2.07
Below Poverty9.5% ≈ Avg
College Grads40.4% ≈ Avg
Unemployment3.7% ▼ 25% below avg
No HS Diploma43 (1.7%)
HS Graduate583 (22.4%)
Some College475 (18.2%)
Associates453 (17.4%)
Bachelors395 (15.2%)
Graduate Degree654 (25.1%)

Education

No HS: 1.7%HS Grad: 22.4%Some College: 18.2%Associates: 17.4%Bachelors: 15.2%Graduate: 25.1%Edu
No HS1.7%
HS Grad22.4%
Some College18.2%
Associates17.4%
Bachelors15.2%
Graduate25.1%
Housing & Income

Housing Tenure

Owner: 78.7%Renter: 21.3%Tenure
Owner78.7%
Renter21.3%

Home Value Distribution

Under $50k
5%
$50k–$100k
6%
$100k–$150k
11%
$150k–$200k
16%
$200k–$300k
22%
$300k–$500k
30%
Over $500k
10%

Financials

Median HH Income$71,576 ≈ Avg
Median Home Value$248,740 ▼ 11% below avg
Home/Income Ratio3.5x (nat avg ~3.5x)
Median Rent$956/mo
Total Housing Units2,047
Vacant Units293

Income Distribution

Under $25k
18%
$25k–$50k
11%
$50k–$75k
24%
$75k–$100k
8%
$100k–$150k
27%
$150k–$200k
8%
Over $200k
4%
Employment & Commute

How People Get to Work

Drove Alone
88%
Public Transit
1%
Walked
7%
Work From Home
5%

Commute Time

Under 15 min
59%
15–30 min
10%
30–45 min
11%
Over 45 min
20%
Housing Stock

Year Built

Before 1940
11%
1940s–1950s
10%
1960s–1970s
6%
1980s–1990s
7%
2000+
66%
About Columbia County, WA

Columbia County is located in Washington and encompasses 2 ZIP codes spanning 2 cities and communities. The county has an estimated population of 3,702 residents. With a median age of 52.39, it is a mature county.

Columbia County has a solidly middle-class economic profile. The median household income of $71,575 is near the national average. Unemployment stands at 3.7%, below the national average. The poverty rate of 9.5% is near the national average.

Housing in Columbia County is an affordable housing market, with a median home value of $248,740 — near the national average. Monthly median rent is approximately $955. Homeownership rates are high at 78.7%, reflecting a largely residential, stable population.

The residents of Columbia County are primarily White (80.01%). Educational attainment is well-educated — 40.4% of adults hold a bachelor's degree or higher, near the national average.

Columbia County, WA is a solidly middle-class area in Washington. The 2 ZIP codes within the county each have their own character — browse the full list below to find the right community, whether you're looking for affordable housing, strong schools, or economic opportunity.

ZIP Codes in Columbia County
ZIPCityPopulationMedian IncomeMedian HomeMedian RentUnemp.College
99328 Dayton 3,595 $72,233 $252,200 $937 3.7% 40.8%
99359 Starbuck 107 $49,500 $132,500 $1,583 3.6% 25.6%

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Highest Income ZIPs
Cities in Columbia County