99110 ZIP Code — Clayton, WA

Stevens County, Washington

ZIP code 99110 is located in Clayton, Washington, within Stevens County. It covers approximately 38.62 square miles and serves a population of 1,465 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99110

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $416,800. Owner-occupancy sits near the national average at 73%.

Median household income is $78,536. The poverty rate of 5% is below the national average. SNAP benefit usage at 24% of households reflects economic stress in the area. 44% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is natural resources, construction, and trades, with education and healthcare as the leading industry. An above-average commute of 51 minutes suggests many residents work outside the immediate area.

College attainment at 12% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.

Overall, ZIP code 99110 reflects a community defined by a trades-oriented workforce, a strong veteran community, a significant Social Security-dependent population, and elevated reliance on food assistance.

1,465

population

38.62

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

99110 ZIP code map

Cities in ZIP code 99110

Below are the cities the US Postal Service accepts for ZIP code 99110. Using any city not on this list may result in mail delivery delays.

City	Status
Clayton	Preferred

Nearby ZIP codes

99006 Deer Park (2.7 mi) 99148 Loon Lake (10 mi) 99026 Nine Mile Falls (12.4 mi) 99013 Ford (13 mi) 99173 Springdale (13.6 mi) 99005 Colbert (14.1 mi) 99181 Valley (14.9 mi) 99009 Elk (15.1 mi) 99003 Chattaroy (15.2 mi) 99208 Spokane (15.3 mi) 99218 Spokane (17.6 mi) 99251 Spokane (17.8 mi)

Demographics updated 05/2026

Population
Total population	1,465
Population density	38 / sq mi
State FIPS	53
County FIPS	065

Geography
Land area	38.62 sq mi
Water area	0.00 sq mi
Latitude	47.9865
Longitude	-117.5832
Timezone	Pacific (PT)
Area code	509

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	46.4%	49.6%	31.7%
$50k – $100k	28.4%	31.1%	30.6%
$100k – $200k	23.8%	15.5%	27.1%
Over $200k	1.5%	3.8%	10.6%

Demographics & statistics

1,465

Population

People per sq mi

42.8

Median age

$78,536

Median household income

$34,105

Per capita income

$416,800

Median home value

$805

Median monthly rent

72.8%

Home ownership

5.3%

Poverty rate

7.1%

Unemployment

462

Housing units

12.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

131

35–44

147

45–54

100

55–59

60–64

128

65–74

145

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	288	19.7%
18 and over	1,177	80.3%
65 and over	319	21.8%
Median age	42.8 years

Race & ethnicity

White 89.4%

Two or more races 5.6%

Hispanic or Latino 3.7%

American Indian / Alaska Native 0.9%

Native Hawaiian / Pacific Islander 0.3%

Group	Count	%
White	1,361	89.4%
Two or more races	85	5.6%
Hispanic or Latino	57	3.7%
American Indian / Alaska Native	14	0.9%
Native Hawaiian / Pacific Islander	5	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	46.4%	49.6%	31.7%
$50k – $100k	28.4%	31.1%	30.6%
$100k – $200k	23.8%	15.5%	27.1%
Over $200k	1.5%	3.8%	10.6%

Under $10k 8.2%

$10k–$15k 3.1%

$25k–$35k 15.1%

$35k–$50k 8.0%

$50k–$75k 13.2%

$75k–$100k 26.9%

$100k–$150k 11.5%

$150k–$200k 11.7%

$200k+ 2.2%

Range	% of households
Under $10k	8.2%
$10k–$15k	3.1%
$25k–$35k	15.1%
$35k–$50k	8.0%
$50k–$75k	13.2%
$75k–$100k	26.9%
$100k–$150k	11.5%
$150k–$200k	11.7%
$200k+	2.2%
Median income	$78,536

Housing

Home values

$100k–$150k 2.6%

$150k–$200k 0.2%

$200k–$300k 25.1%

$300k–$500k 50.0%

$500k–$1M 20.3%

$1M+ 1.7%

Housing overview

Metric	Value
Median home value	$416,800
Median rent / month	$805
Owner occupied	72.8%
Renter occupied	27.2%
Vacant	0.0%
Single-family detached	60.8%
Large apartment buildings	0.0%
Mobile homes	31.0%
Median rooms	6.0
Avg household size (owned)	2.55

Year built

Era	%
2020 or later	0.0%
2010–2019	4.6%
2000–2009	19.1%
1990–1999	26.1%
1980–1989	23.6%
1970–1979	13.4%
1960–1969	0.0%
1950–1959	4.9%
1940–1949	2.0%
1939 or earlier	6.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	17.5%
2 bedrooms	10.1%
3 bedrooms	45.2%
4 bedrooms	24.9%
5+ bedrooms	2.4%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	24.7%
2 vehicles	28.0%
3 or more	47.2%

Heating fuel

Fuel type	%
Utility gas	1.3%
Electricity	48.7%
Propane / LP gas	10.1%
Fuel oil	6.3%
Wood	30.4%

Households & families

Household type	Count	%
Married-couple family	412	64.9%
Cohabiting couple	6	0.9%
Male householder, no spouse	132	20.8%
Female householder, no spouse	85	13.4%
Households with children under 18	127	20.0%
Households with seniors (65+)	249	39.2%
Average household size	2.31

Marital status

Status	Male	Female
Never married	15.7%	16.4%
Married	71.3%	64.1%
Separated	0.0%	0.0%
Widowed	0.0%	0.6%
Divorced	13.1%	18.9%

Education

Less than 9th grade 0.0%

Some HS, no diploma 6.4%

HS graduate 39.9%

Some college, no degree 25.5%

Associate's degree 15.8%

Bachelor's degree 7.0%

Graduate / professional 5.3%

Metric	%
HS diploma or higher	93.6%
Bachelor's or higher	12.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	9	3.8%
Elementary school	141	59.0%
High school	71	29.7%
College / grad school	18	7.5%

Employment

Industry of employment

Education & healthcare 20.4%

Retail trade 17.4%

Construction 12.6%

Professional & management 10.7%

Transportation & utilities 7.7%

Arts, food & hospitality 7.2%

Finance & real estate 4.7%

Other services 4.2%

Manufacturing 4.1%

Wholesale trade 4.1%

Public administration 3.6%

Agriculture & mining 2.8%

Information 0.6%

Occupation

Category	%
Management, business & arts	16.8%
Service	21.0%
Sales & office	25.1%
Natural resources & construction	27.9%
Production & transportation	9.2%

Employment type

Type	%
Private sector	85.0%
Government	11.7%
Self-employed	3.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	91.2%
Carpool	1.0%
Public transit	0.0%
Walk	1.2%
Work from home	3.1%
Other means	3.5%
Avg commute (minutes)	51.1

Poverty

All people 5.3%

Under 18 years 0.0%

18 and over 6.5%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	44.3%
Retirement income	24.3%
Supplemental Security	1.6%
Cash public assistance	5.4%
Food stamps / SNAP	23.6%

Health indicators

Condition	%
Obesity	30.5%
High blood pressure	30.0%
High cholesterol	32.1%
Diabetes	8.7%
Heart disease	6.3%
Stroke	3.0%
Asthma	11.0%
Arthritis	25.5%
Kidney disease	2.9%
Pulmonary disease	7.0%
Cancer	6.8%

Behavior / access	%
Smoking	17.1%
Binge drinking	17.5%
No physical activity	18.8%
Less than 7 hrs sleep	32.8%
Depression	26.0%
Fair or poor health	13.7%
Poor mental health	15.5%
Poor physical health	10.8%
No health insurance	10.3%
Visited doctor (checkup)	64.8%
Visited dentist	62.1%
Cholesterol screening	87.2%
Teeth loss	12.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	150	12.7%

Disability	%
Any disability	17.9%
Under 18	2.8%
18–64 years	15.9%
65 and over	37.0%

Health insurance coverage

Type	%
Private insurance	58.0%
Public insurance	40.7%
No insurance	12.3%
Uninsured under 19	21.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,392	95.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,465	100.0%
Born in same state	1,465	100.0%
Born in different state	979	66.8%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	271	18.5%
French	216	14.7%
Arab	59	4%

Ancestry	Count	%
German	12	0.8%
Polish	8	0.5%
English	7	0.5%

Technology access

Metric	% of households
Computer access	43.3%
Internet access	79.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 99110

What city is ZIP code 99110 in?

ZIP code 99110 is primarily assigned to Clayton, Washington.

What county is ZIP code 99110 in?

ZIP code 99110 falls within Stevens County, Washington.

How educated is the population of ZIP code 99110?

12% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 99110 have a large retiree population?

44% of households in ZIP code 99110 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 99110 have a large veteran population?

13% of civilians in ZIP code 99110 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 99110?

The median home value in ZIP code 99110 is $416,800.

What timezone is ZIP code 99110 in?

ZIP code 99110 observes the PST timezone.