99166 ZIP Code — Republic, WA

Ferry County, Washington

ZIP code 99166 is located in Republic, Washington, within Ferry County. It covers approximately 479.36 square miles and serves a population of 2,936 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99166

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $251,900. Owner-occupancy sits near the national average at 74%.

Median household income is $60,089. SNAP benefit usage at 23% of households reflects economic stress in the area. 55% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 15 minutes is near the national average. Remote work is prevalent — 22% of workers work from home.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (20%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 16% of civilians, above the national average of 7%; and disability rates above the national average at 26%.

Overall, ZIP code 99166 reflects a community defined by a strong veteran community, a high rate of remote workers, a significant Social Security-dependent population, and elevated reliance on food assistance.

2,936

population

479.36

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

99166 ZIP code map

Cities in ZIP code 99166

Below are the cities the US Postal Service accepts for ZIP code 99166. Using any city not on this list may result in mail delivery delays.

City	Status
Republic	Preferred

Nearby ZIP codes

99150 Malo (13.9 mi) 99118 Curlew (18.2 mi)

Demographics updated 05/2026

Population
Total population	2,936
Population density	6 / sq mi
State FIPS	53
County FIPS	019

Geography
Land area	479.36 sq mi
Water area	1.61 sq mi
Latitude	48.6169
Longitude	-118.6442
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	56.7%	57.8%	31.7%
$50k – $100k	21.5%	23.0%	30.6%
$100k – $200k	16.8%	16.2%	27.1%
Over $200k	5.1%	3.0%	10.6%

Demographics & statistics

2,936

Population

People per sq mi

54.5

Median age

$60,089

Median household income

$35,591

Per capita income

$251,900

Median home value

$772

Median monthly rent

73.7%

Home ownership

12.4%

Poverty rate

9.1%

Unemployment

1,318

Housing units

20.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

108

25–34

111

186

35–44

193

141

45–54

146

125

55–59

130

148

60–64

154

279

65–74

288

126

75–84

131

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	473	16.1%
18 and over	2,463	83.9%
65 and over	891	30.3%
Median age	54.5 years

Race & ethnicity

White 87.5%

Two or more races 9.3%

American Indian / Alaska Native 1.4%

Native Hawaiian / Pacific Islander 1.2%

Black or African American 0.3%

Hispanic or Latino 0.2%

Other race 0.1%

Group	Count	%
White	2,575	87.5%
Two or more races	274	9.3%
American Indian / Alaska Native	40	1.4%
Native Hawaiian / Pacific Islander	35	1.2%
Black or African American	9	0.3%
Hispanic or Latino	6	0.2%
Other race	3	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	56.7%	57.8%	31.7%
$50k – $100k	21.5%	23.0%	30.6%
$100k – $200k	16.8%	16.2%	27.1%
Over $200k	5.1%	3.0%	10.6%

Under $10k 3.4%

$10k–$15k 12.6%

$15k–$25k 10.0%

$25k–$35k 5.2%

$35k–$50k 10.7%

$50k–$75k 20.5%

$75k–$100k 9.9%

$100k–$150k 13.0%

$150k–$200k 9.2%

$200k+ 5.5%

Range	% of households
Under $10k	3.4%
$10k–$15k	12.6%
$15k–$25k	10.0%
$25k–$35k	5.2%
$35k–$50k	10.7%
$50k–$75k	20.5%
$75k–$100k	9.9%
$100k–$150k	13.0%
$150k–$200k	9.2%
$200k+	5.5%
Median income	$60,089

Housing

Home values

Under $50k 5.3%

$50k–$100k 8.3%

$100k–$150k 11.1%

$150k–$200k 10.9%

$200k–$300k 25.5%

$300k–$500k 28.7%

$500k–$1M 7.2%

$1M+ 3.0%

Housing overview

Metric	Value
Median home value	$251,900
Median rent / month	$772
Owner occupied	73.7%
Renter occupied	26.3%
Vacant	26.2%
Single-family detached	68.0%
Large apartment buildings	0.3%
Mobile homes	21.8%
Median rooms	4.9
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	7.3%
2000–2009	21.3%
1990–1999	14.6%
1980–1989	14.1%
1970–1979	16.8%
1960–1969	9.8%
1950–1959	6.7%
1940–1949	4.7%
1939 or earlier	4.7%

Bedrooms

Size	% of units
No bedroom (studio)	10.8%
1 bedroom	17.1%
2 bedrooms	26.1%
3 bedrooms	35.5%
4 bedrooms	9.2%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	8.0%
1 vehicle	31.9%
2 vehicles	37.9%
3 or more	22.2%

Heating fuel

Fuel type	%
Utility gas	2.1%
Electricity	49.0%
Propane / LP gas	1.8%
Fuel oil	2.6%
Wood	43.1%

Households & families

Household type	Count	%
Married-couple family	546	45.2%
Cohabiting couple	137	11.4%
Male householder, no spouse	193	16.0%
Female householder, no spouse	331	27.4%
Households with children under 18	189	15.7%
Households with seniors (65+)	585	48.5%
Average household size	2.36

Marital status

Status	Male	Female
Never married	28.3%	26.3%
Married	53.4%	44.3%
Separated	0.1%	1.5%
Widowed	5.4%	16.7%
Divorced	12.9%	11.3%

Education

Less than 9th grade 2.4%

Some HS, no diploma 8.2%

HS graduate 30.4%

Some college, no degree 25.6%

Associate's degree 12.9%

Bachelor's degree 13.3%

Graduate / professional 7.1%

Metric	%
HS diploma or higher	89.4%
Bachelor's or higher	20.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	30	6.6%
Kindergarten	8	1.8%
Elementary school	191	42.2%
High school	181	40.0%
College / grad school	43	9.5%

Employment

Industry of employment

Education & healthcare 18.1%

Arts, food & hospitality 16.9%

Public administration 16.8%

Other services 11.0%

Construction 10.1%

Agriculture & mining 8.0%

Retail trade 6.5%

Finance & real estate 4.3%

Transportation & utilities 3.6%

Professional & management 2.9%

Manufacturing 1.4%

Information 0.4%

Occupation

Category	%
Management, business & arts	30.6%
Service	31.3%
Sales & office	15.9%
Natural resources & construction	16.5%
Production & transportation	5.7%

Employment type

Type	%
Private sector	48.0%
Government	36.0%
Self-employed	16.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	53.6%
Carpool	10.9%
Public transit	0.0%
Walk	11.3%
Work from home	21.5%
Other means	2.7%
Avg commute (minutes)	14.6

Poverty

All people 12.4%

Under 18 years 6.6%

18 and over 13.5%

Married-couple families 4.0%

Female-led households 2.8%

Income support

Source	% of households
Social Security	55.1%
Retirement income	36.5%
Supplemental Security	9.0%
Cash public assistance	2.7%
Food stamps / SNAP	23.1%

Health indicators

Condition	%
Obesity	33.2%
High blood pressure	38.2%
High cholesterol	39.1%
Diabetes	13.3%
Heart disease	9.5%
Stroke	4.6%
Asthma	12.1%
Arthritis	32.9%
Kidney disease	4.1%
Pulmonary disease	10.5%
Cancer	8.5%

Behavior / access	%
Smoking	20.1%
Binge drinking	14.7%
No physical activity	23.9%
Less than 7 hrs sleep	34.4%
Depression	27.3%
Fair or poor health	19.6%
Poor mental health	15.8%
Poor physical health	15.1%
No health insurance	11.7%
Visited doctor (checkup)	70.9%
Visited dentist	56.7%
Cholesterol screening	89.1%
Teeth loss	16.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	393	16.0%

Disability	%
Any disability	26.2%
Under 18	6.3%
18–64 years	26.1%
65 and over	37.1%

Health insurance coverage

Type	%
Private insurance	55.0%
Public insurance	67.3%
No insurance	2.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,783	94.8%
Spanish	29	1.0%
Other Indo-European	12	0.4%
Asian & Pacific Islander	17	0.6%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,879	98.1%
Born in same state	2,791	95.1%
Born in different state	1,419	48.3%
Foreign born	88	3.0%
Naturalized citizen	57	1.9%
Not a US citizen	43	75.4%

Ancestry

Ancestry	Count	%
Italian	424	14.4%
French	408	13.9%
Polish	105	3.6%
Arab	90	3.1%

Ancestry	Count	%
English	36	1.2%
German	23	0.8%
Dutch	23	0.8%
Norwegian	11	0.4%

Technology access

Metric	% of households
Computer access	41.1%
Internet access	91.0%

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

Frequently asked questions about ZIP code 99166

What city is ZIP code 99166 in?

ZIP code 99166 is primarily assigned to Republic, Washington.

What county is ZIP code 99166 in?

ZIP code 99166 falls within Ferry County, Washington.

Does ZIP code 99166 have an older population?

30% of residents in ZIP code 99166 are 65 or older, above the national average of ~17%.

Does ZIP code 99166 have a large retiree population?

55% of households in ZIP code 99166 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 99166 have a large veteran population?

16% of civilians in ZIP code 99166 are veterans, above the national average of ~7%.

What is the population of ZIP code 99166?

ZIP code 99166 has an estimated population of 2,936 residents, with a density of 6 people per square mile.

What timezone is ZIP code 99166 in?

ZIP code 99166 observes the PST timezone.