99138 ZIP Code — Inchelium, WA

Ferry County, Washington

ZIP code 99138 is located in Inchelium, Washington, within Ferry County. It covers approximately 566.56 square miles and serves a population of 1,103 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99138

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $187,000. Owner-occupancy sits near the national average at 61%.

Median household income is $40,583. Poverty affects 24% of residents, above the national average. SNAP benefit usage at 30% of households reflects economic stress in the area. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with public administration as the leading industry. The average commute of 28 minutes is near the national average.

College attainment at 16% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of diabetes (16%), smoking (27%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 12% of civilians, above the national average of 7%.

Overall, ZIP code 99138 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a strong veteran community, a significant Social Security-dependent population, and elevated reliance on food assistance.

1,103

population

566.56

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

99138 ZIP code map

Cities in ZIP code 99138

Below are the cities the US Postal Service accepts for ZIP code 99138. Using any city not on this list may result in mail delivery delays.

City	Status
Inchelium	Acceptable
Inchelium	Preferred

Nearby ZIP codes

99140 Keller (14.4 mi) 99131 Gifford (17.3 mi) 99137 Hunters (18.9 mi)

Demographics updated 05/2026

Population
Total population	1,103
Population density	2 / sq mi
State FIPS	53
County FIPS	019

Geography
Land area	566.56 sq mi
Water area	31.18 sq mi
Latitude	48.2617
Longitude	-118.4930
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	58.7%	57.8%	31.7%
$50k – $100k	22.0%	23.0%	30.6%
$100k – $200k	18.3%	16.2%	27.1%
Over $200k	1.0%	3.0%	10.6%

Demographics & statistics

1,103

Population

People per sq mi

42.1

Median age

$40,583

Median household income

$23,436

Per capita income

$187,000

Median home value

$504

Median monthly rent

60.9%

Home ownership

24.2%

Poverty rate

14.5%

Unemployment

503

Housing units

15.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	269	24.4%
18 and over	834	75.6%
65 and over	236	21.4%
Median age	42.1 years

Race & ethnicity

American Indian / Alaska Native 58.2%

White 28.8%

Two or more races 10.5%

Native Hawaiian / Pacific Islander 1.3%

Hispanic or Latino 0.6%

Black or African American 0.4%

Other race 0.2%

Group	Count	%
American Indian / Alaska Native	646	58.2%
White	320	28.8%
Two or more races	117	10.5%
Native Hawaiian / Pacific Islander	14	1.3%
Hispanic or Latino	7	0.6%
Black or African American	4	0.4%
Other race	2	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	58.7%	57.8%	31.7%
$50k – $100k	22.0%	23.0%	30.6%
$100k – $200k	18.3%	16.2%	27.1%
Over $200k	1.0%	3.0%	10.6%

Under $10k 9.8%

$10k–$15k 12.9%

$15k–$25k 11.8%

$25k–$35k 8.2%

$35k–$50k 13.9%

$50k–$75k 17.3%

$75k–$100k 9.1%

$100k–$150k 12.9%

$150k–$200k 4.1%

Range	% of households
Under $10k	9.8%
$10k–$15k	12.9%
$15k–$25k	11.8%
$25k–$35k	8.2%
$35k–$50k	13.9%
$50k–$75k	17.3%
$75k–$100k	9.1%
$100k–$150k	12.9%
$150k–$200k	4.1%
Median income	$40,583

Housing

Home values

Under $50k 12.2%

$50k–$100k 11.8%

$100k–$150k 18.1%

$150k–$200k 13.0%

$200k–$300k 21.7%

$300k–$500k 19.3%

$500k–$1M 3.9%

Housing overview

Metric	Value
Median home value	$187,000
Median rent / month	$504
Owner occupied	60.9%
Renter occupied	39.1%
Vacant	37.4%
Single-family detached	67.3%
Large apartment buildings	0.0%
Mobile homes	27.6%
Median rooms	4.9
Avg household size (owned)	2.69

Year built

Era	%
2020 or later	0.0%
2010–2019	3.2%
2000–2009	11.7%
1990–1999	15.6%
1980–1989	16.4%
1970–1979	32.4%
1960–1969	6.9%
1950–1959	6.8%
1940–1949	3.3%
1939 or earlier	3.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	10.5%
2 bedrooms	32.0%
3 bedrooms	35.0%
4 bedrooms	15.8%
5+ bedrooms	5.3%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	30.2%
2 vehicles	21.6%
3 or more	42.4%

Heating fuel

Fuel type	%
Electricity	29.0%
Propane / LP gas	5.0%
Fuel oil	0.7%
Wood	62.4%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	154	36.9%
Cohabiting couple	48	11.5%
Male householder, no spouse	105	25.2%
Female householder, no spouse	110	26.4%
Households with children under 18	146	35.0%
Households with seniors (65+)	147	35.3%
Average household size	2.64

Marital status

Status	Male	Female
Never married	37.5%	43.0%
Married	46.4%	35.0%
Separated	0.0%	1.9%
Widowed	2.3%	5.6%
Divorced	13.8%	14.5%

Education

Less than 9th grade 4.0%

Some HS, no diploma 5.9%

HS graduate 31.5%

Some college, no degree 31.1%

Associate's degree 11.8%

Bachelor's degree 9.7%

Graduate / professional 6.0%

Metric	%
HS diploma or higher	90.2%
Bachelor's or higher	15.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	40	16.9%
Kindergarten	12	5.1%
Elementary school	110	46.4%
High school	75	31.6%
College / grad school	0	0.0%

Employment

Industry of employment

Public administration 26.4%

Education & healthcare 25.1%

Agriculture & mining 12.5%

Professional & management 9.9%

Construction 7.6%

Transportation & utilities 6.3%

Retail trade 6.0%

Arts, food & hospitality 2.6%

Finance & real estate 2.1%

Manufacturing 0.8%

Other services 0.8%

Occupation

Category	%
Management, business & arts	39.2%
Service	22.2%
Sales & office	15.1%
Natural resources & construction	9.7%
Production & transportation	13.8%

Employment type

Type	%
Private sector	26.4%
Government	69.2%
Self-employed	4.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.5%
Carpool	11.0%
Public transit	0.0%
Walk	3.4%
Work from home	8.1%
Other means	0.0%
Avg commute (minutes)	27.7

Poverty

All people 24.2%

Under 18 years 29.1%

18 and over 22.7%

Married-couple families 11.7%

Female-led households 39.7%

Income support

Source	% of households
Social Security	33.8%
Retirement income	22.3%
Supplemental Security	5.8%
Cash public assistance	5.0%
Food stamps / SNAP	30.0%

Health indicators

Condition	%
Obesity	37.4%
High blood pressure	36.8%
High cholesterol	31.9%
Diabetes	15.8%
Heart disease	9.4%
Stroke	5.3%
Asthma	14.1%
Arthritis	29.5%
Kidney disease	4.2%
Pulmonary disease	10.3%
Cancer	6.9%

Behavior / access	%
Smoking	27.0%
Binge drinking	16.2%
No physical activity	26.7%
Less than 7 hrs sleep	39.2%
Depression	28.4%
Fair or poor health	23.9%
Poor mental health	19.4%
Poor physical health	17.1%
No health insurance	13.4%
Visited doctor (checkup)	70.4%
Visited dentist	50.7%
Cholesterol screening	86.3%
Teeth loss	22.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	98	11.8%

Disability	%
Any disability	17.9%
Under 18	4.8%
18–64 years	12.5%
65 and over	46.2%

Health insurance coverage

Type	%
Private insurance	46.2%
Public insurance	57.1%
No insurance	9.7%
Uninsured under 19	11.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,032	93.6%
Spanish	6	0.6%
Other Indo-European	0	0.0%
Asian & Pacific Islander	2	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,083	98.2%
Born in same state	1,079	97.8%
Born in different state	830	75.2%
Foreign born	4	0.4%
Naturalized citizen	20	1.8%
Not a US citizen	14	70.0%

Ancestry

Ancestry	Count	%
Italian	97	8.8%
French	49	4.4%
Polish	30	2.7%

Ancestry	Count	%
Arab	11	1%
English	6	0.5%
Dutch	3	0.3%

Technology access

Metric	% of households
Computer access	37.8%
Internet access	77.5%

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

Frequently asked questions about ZIP code 99138

What city is ZIP code 99138 in?

ZIP code 99138 is primarily assigned to Inchelium, Washington.

What county is ZIP code 99138 in?

ZIP code 99138 falls within Ferry County, Washington.

What is the poverty rate in ZIP code 99138?

24% of residents in ZIP code 99138 live below the poverty line, above the national average.

Does ZIP code 99138 have a large veteran population?

12% of civilians in ZIP code 99138 are veterans, above the national average of ~7%.

What are the health statistics for ZIP code 99138?

Health data for ZIP code 99138 shows elevated rates of diabetes (16%) and smoking (27%) compared to national benchmarks.

What is the median household income in ZIP code 99138?

The median household income in ZIP code 99138 is $40,583, below the national median of ~$75,000.

What timezone is ZIP code 99138 in?

ZIP code 99138 observes the PST timezone.