Zip code 99328: Dayton, Washington

Q: What city is zip code 99328?

99328 is assigned to Dayton, Washington. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 99328 in?

99328 is in Columbia County, Washington.

Q: What is the population of 99328?

About 3,646 people live in 99328, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 99328?

The median household income in 99328 is $72,756.

Q: What zip codes are near 99328?

The closest zip codes to 99328 are 99361, 99329, 99347, 99359, 99362.

Residential delivery areaColumbia CountyPacific Time

Population

3,646

Median household income

$73K

U.S. $81K

Median home value

$272K

U.S. $333K

Median rent

$982/mo

U.S. $1,413

Median age

49.3

U.S. 38.9

Land area

657 sq mi

6 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 99328

99328 is a rural zip code in Dayton, Washington (Columbia County), covering 657 sq mi of land. About 3,646 people live here, or 6 per square mile. The median resident is 49.3 years old, compared with 38.9 nationally.

The median household earns $72,756 a year, close to the national median of $80,734. 9.6% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $272,100, or 3.7 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 77% of occupied homes are lived in by their owners, and renters pay a median of $982 a month.

24% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 21.4 minutes each way, and 12% of workers work from home. The most common jobs among working residents are in healthcare; construction and repair; and management.

How 99328 compares

Sorted from highest to lowest national percentile

Government workers27.9%
97th
U.S. 14.5% · WA 16%108th of 570 in WA
Residents 65 and older29.6%
96th
U.S. 17.2% · WA 16.6%98th of 571 in WA
Median age49.3
94th
U.S. 38.9 · WA 38.3137th of 571 in WA
Veterans11.7%
94th
U.S. 6.2% · WA 7.8%136th of 571 in WA
Housing vacancy15.7%
88th
U.S. 10.1% · WA 7.3%136th of 563 in WA
Healthcare workers12.8%
87th
U.S. 9.7% · WA 9.3%80th of 570 in WA
Self-employed workers13.2%
84th
U.S. 10% · WA 9.6%155th of 570 in WA
Homeownership rate77.4%
72nd
U.S. 65.2% · WA 63.8%243rd of 563 in WA
Median earnings per worker$52,708
63rd
U.S. $49,666 · WA $59,959286th of 566 in WA
Uninsured rate8.3%
61st
U.S. 8.4% · WA 6.3%148th of 567 in WA
Per capita income$40,778
52nd
U.S. $44,673 · WA $53,744310th of 570 in WA
Tech workers3%
52nd
U.S. 3.8% · WA 6.7%249th of 570 in WA
Work from home11.9%
46th
U.S. 15.1% · WA 19.8%333rd of 570 in WA
Poverty rate9.6%
42nd
U.S. 12.5% · WA 9.9%284th of 563 in WA
Income inequality (Gini)0.425
41st
U.S. 0.483 · WA 0.469276th of 560 in WA
Median household income$72,756
40th
U.S. $80,734 · WA $98,141368th of 541 in WA
Median home value$272,100
38th
U.S. $332,700 · WA $564,600454th of 536 in WA
Unemployment rate4.1%
36th
U.S. 5.2% · WA 5.1%335th of 570 in WA
Rent-burdened renters46.5%
34th
U.S. 51.1% · WA 49.9%280th of 541 in WA
Foreign-born residents5.5%
32nd
U.S. 14.1% · WA 15.4%328th of 571 in WA
Bachelor's degree or higher24%
31st
U.S. 35.7% · WA 39.6%343rd of 571 in WA
Diversity index33.9
28th
U.S. 61.4 · WA 56.5348th of 571 in WA
Median gross rent$982
20th
U.S. $1,413 · WA $1,760372nd of 475 in WA
Average commute21.4 min
20th
StrengthU.S. 26.4 min · WA 26.6 min417th of 546 in WA
Residents under 1817.6%
17th
U.S. 22% · WA 21.4%373rd of 571 in WA
Population3,646
6th
U.S. 334,922,499 · WA 7,816,116322nd of 571 in WA
Broadband access81.1%
6th
WeaknessU.S. 91% · WA 93.6%509th of 563 in WA
Population density6/sq mi
1st
U.S. 95/sq mi · WA 118/sq mi491st of 571 in WA

Measure	99328	Columbia	WA	U.S.	National percentile	Rank in WA
Government workers	27.9%	29.3%	16%	14.5%	97th	108th of 570
Residents 65 and older	29.6%	29.3%	16.6%	17.2%	96th	98th of 571
Median age	49.3	49.6	38.3	38.9	94th	137th of 571
Veterans	11.7%	11.6%	7.8%	6.2%	94th	136th of 571
Housing vacancy	15.7%	16%	7.3%	10.1%	88th	136th of 563
Healthcare workers	12.8%	12.1%	9.3%	9.7%	87th	80th of 570
Self-employed workers	13.2%	12.9%	9.6%	10%	84th	155th of 570
Homeownership rate	77.4%	77.7%	63.8%	65.2%	72nd	243rd of 563
Median earnings per worker	$52,708	$52,443	$59,959	$49,666	63rd	286th of 566
Uninsured rate	8.3%	7.8%	6.3%	8.4%	61st	148th of 567
Per capita income	$40,778	$40,579	$53,744	$44,673	52nd	310th of 570
Tech workers	3%	2.7%	6.7%	3.8%	52nd	249th of 570
Work from home	11.9%	11.9%	19.8%	15.1%	46th	333rd of 570
Poverty rate	9.6%	9.3%	9.9%	12.5%	42nd	284th of 563
Income inequality (Gini)	0.425	0.432	0.469	0.483	41st	276th of 560
Median household income	$72,756	$71,810	$98,141	$80,734	40th	368th of 541
Median home value	$272,100	$271,200	$564,600	$332,700	38th	454th of 536
Unemployment rate	4.1%	3.9%	5.1%	5.2%	36th	335th of 570
Rent-burdened renters	46.5%	45.8%	49.9%	51.1%	34th	280th of 541
Foreign-born residents	5.5%	5%	15.4%	14.1%	32nd	328th of 571
Bachelor's degree or higher	24%	24.9%	39.6%	35.7%	31st	343rd of 571
Diversity index	33.9	32.7	56.5	61.4	28th	348th of 571
Median gross rent	$982	$985	$1,760	$1,413	20th	372nd of 475
Average commuteStrength	21.4 min	23 min	26.6 min	26.4 min	20th	417th of 546
Residents under 18	17.6%	18%	21.4%	22%	17th	373rd of 571
Population	3,646	4,014	7,816,116	334,922,499	6th	322nd of 571
Broadband accessWeakness	81.1%	82.4%	93.6%	91%	6th	509th of 563
Population density	6/sq mi	5/sq mi	118/sq mi	95/sq mi	1st	491st of 571

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

13%

5–17

18–24

25–34

14%

35–44

45–54

15%

55–64

18%

65–74

12%

75+

Median age

49.3

Under 18

17.6%

65 and over

29.6%

Race and ethnicity

White80%
Black0.6%
Hispanic9%
Asian2%
Native American0%
Pacific Islander0%
Other0.2%
Multiracial8%

Diversity index

33.9

U.S. 61.4

Foreign-born

5.5%

U.S. 14.1%

Born in state

61.1%

Language spoken at home (households)

English only

92%

Spanish

Other Indo-European

Asian / Pacific

0.5%

Other

Households

Households: 1,667
Average household size: 2.2
Family households: 65%
Married couples: 46.4%
Living alone: 28%
Veterans (of adults): 11.7%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

17%

$25–50k

15%

$50–75k

20%

$75–100k

11%

$100–150k

26%

$150–200k

$200k+

Median household income

99328

$72,756

Columbia Co.

$71,810

Washington

$98,141

United States

$80,734

Per capita income

$40,778

U.S. $44,673

Poverty rate

9.6%

U.S. 12.5%

Households earning $150K+

10.1%

U.S. 23%

Income inequality (Gini)

0.425

U.S. 0.483

Housing

Median home value

99328

$272,100

Columbia Co.

$271,200

Washington

$564,600

United States

$332,700

Median gross rent

99328

$982

Columbia Co.

$985

Washington

$1,760

United States

$1,413

Types of housing

Single-family

83%

2–4 units

5–19 units

20+ units

0.6%

Mobile home

11%

Boat, RV, van

Housing units: 1,977
Owner-occupied: 77.4%
Vacant: 15.7%
Median year built: 1951
Median rooms: 5.9
Renters paying 30%+ of income: 46.5%
Renters paying 50%+ of income: 27.4%
Home value to income: 3.7× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

70%

Carpooled

Transit

0.4%

Walked

Bicycle

Worked from home

12%

Other

Commute time (one way)

<10 min

40%

10–19

19%

20–29

30–44

14%

45–59

15%

60+

Average commute

21.4 min

U.S. 26.4 min

Unemployment

4.1%

U.S. 5.2%

In labor force

54.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Healthcare

13%

Construction and repair

11%

Management

11%

Office and admin

11%

Sales

Education

Transportation and moving

Cleaning and personal care

Farming, fishing and forestry

Engineering and science

Production

Police and fire

Computer and math

Food service

Business and finance

Legal and social services

Arts, media and sports

Industries

Health care and social assistance

16%

Agriculture and mining

15%

Retail

13%

Public administration

12%

Education

Manufacturing

Professional and technical services

Other services

Finance, insurance and real estate

Construction

Transportation, warehousing and utilities

Restaurants and hotels

Admin, support and management

Arts and recreation

Wholesale

Information

Median earnings per worker

$52,708

U.S. $49,666

Self-employed

13.2%

U.S. 10%

Government workers

27.9%

U.S. 14.5%

Nonprofit workers

7.2%

U.S. 8.8%

Median earnings by type of work

Type of work	99328	U.S.
Management, business, science and arts	$78,229	$74,888
Service	$41,081	$26,804
Sales and office	$36,135	$40,476
Construction and maintenance	$69,375	$49,199
Production and transportation	$46,250	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

11%

High school

26%

Some college

27%

Associate's

12%

Bachelor's

14%

Graduate

10%

High school graduate or higher: 89.2%
Bachelor's degree or higher: 24%
Graduate or professional degree: 10.1%
Households with broadband: 81.1%
Cable, fiber or DSL: 50.3%
No internet access: 11.3%
Without health insurance: 8.3%
Limited-English households: 1.9%

Geography

City (USPS): Dayton
State: Washington
County: Columbia County
Center point: 46.2757° N, 117.8709° W
Land area: 657 sq mi
Water area: 3.5 sq mi
Time zone: Pacific Time (UTC-8, UTC-7 in summer)
Zip type: Residential delivery area

Zip codes near 99328

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
99361	Waitsburg, WA	13 mi	1,992	$91,367	$295,900
99329	Dixie, WA	16 mi	127	—	$311,400
99347	Pomeroy, WA	17 mi	2,512	$64,699	$243,400
99359	Starbuck, WA	22 mi	94	$61,000	$135,400
99362	Walla Walla, WA	24 mi	42,853	$72,474	$429,600
99402	Asotin, WA	25 mi	1,557	$78,906	$339,800
99136	Hay, WA	28 mi	14	$87,708	—
99348	Prescott, WA	28 mi	1,633	$79,167	$237,200
99403	Clarkston, WA	29 mi	20,760	$71,482	$325,300
99324	College Place, WA	29 mi	10,137	$62,839	$368,500
99333	Hooper, WA	32 mi	151	$98,315	$450,000
97862	Milton Freewater, OR	32 mi	12,313	$54,786	$274,900

Zip codes like 99328 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 99328

What city is zip code 99328?

99328 is assigned to Dayton, Washington. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 99328 in?

99328 is in Columbia County, Washington.

What is the population of 99328?

About 3,646 people live in 99328, according to the Census Bureau's American Community Survey.

What time zone is 99328 in?

99328 is in Pacific Time.

What is the median household income in 99328?

The median household income in 99328 is $72,756.

What zip codes are near 99328?

The closest zip codes to 99328 are 99361, 99329, 99347, 99359, 99362.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 99328, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.