Postal Codes

99166 ZIP Code

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ZIP code 99166 covers Republic, Washington, with a population of about 2,879 and a median household income of $59,821.

Population
2,8796 per square mile
Median age
55.516.8 points above the US average
Median household income
$59,82137% below the Washington median
Poverty rate
14.3%1.9 points above the US average
Typical home value
$284,313up 1.8% in five years
Median rent
$78953% below the Washington median
Degree or higher
19.5%15.5 points below the US average
Homeownership
73.9%8.9 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
82

Where 99166 is

Republic, Washington — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population2,879
Median age55.5
Family households50.5%
Born outside the US2.3%
Speaks a language other than English at home4.9%
White (non-Hispanic)85.9%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino3.5%
Veterans15.9%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$59,821
Income per person$38,264
Poverty rate14.3%
Households on SNAP or cash assistance23.6%

Household income distribution

Under $10k3.7%
$10–15k10.5%
$15–20k5.1%
$20–25k5.4%
$25–30k3.1%
$30–35k2.7%
$35–40k2.9%
$40–45k2.2%
$45–50k6.3%
$50–60k8.3%
$60–75k8.6%
$75–100k14.5%
$100–125k9.6%
$125–150k1.8%
$150–200k10.9%
$200k or more4.4%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,300
Mean adjusted gross income$61,016
Returns declaring $200,000 or more3.1%
Returns, under $25k30.0%
Returns, $25k–$50k26.9%
Returns, $50k–$75k15.4%
Returns, $75k–$100k10.8%
Returns, $100k–$200k13.8%
Returns, $200k or more3.1%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$273,100
Median gross rent$789
Rent as a share of household income31.7%
Owner-occupied73.9%
Vacant homes26%
Median year built1988

What the homes are

Detached house64.7%
Attached house0.8%
2 to 4 units1.2%
5 to 19 units6.4%
20 or more units0.3%
Mobile home25.2%
Boat, RV or van1.4%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$284,313as of 2026-07
Typical home value, 1 yearup 2.8%
Typical home value, 5 yearsup 1.8%
Typical home value, 10 yearsup 68.3%
Typical home value since 2000
201520202026$291,788$162,334

$162,334 in 2015 to $284,313 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate12.5%
Bachelor's degree or higher19.5%
High school diploma or higher91.8%
Works from home17.9%
Drives to work alone56.2%
Takes public transport0%
Commutes 45 minutes or more7.8%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity39.5% 6.1 pts above the national average of 33.4%
Diagnosed diabetes15.2% 3.2 pts above the national average of 12%
Currently smokes15.5% 2.3 pts above the national average of 13.2%
High blood pressure42.2% 8.1 pts above the national average of 34.1%
Fair or poor general health24.3% 4 pts above the national average of 20.3%
No health insurance (18–64)8% 3.3 pts below the national average of 11.3%
Depression25.4% 3.5 pts above the national average of 21.9%
No leisure-time physical activity25% same as the national average of 25.4%
Arthritis39.8% 14.7 pts above the national average of 25.1%
Binge drinking13.4% 2.6 pts below the national average of 16%
Taking blood pressure medication78.6% 3.9 pts above the national average of 74.7%
Cancer (non-skin)12.3% 4.6 pts above the national average of 7.7%
Current asthma12.1% 1.7 pts above the national average of 10.4%
Coronary heart disease10.6% 4.4 pts above the national average of 6.2%
Routine check-up in past year74.3% 2.4 pts below the national average of 76.7%
Cholesterol screening86.2% same as the national average of 85.9%
Cognitive disability16.2% 1.4 pts above the national average of 14.8%
Colorectal screening66.8% 2.5 pts above the national average of 64.3%
COPD10.6% 4 pts above the national average of 6.6%
Visited a dentist57.2% 4.1 pts below the national average of 61.3%
Any disability38.9% 8.2 pts above the national average of 30.7%
Hearing disability11.6% 4.9 pts above the national average of 6.7%
High cholesterol42.5% 6.3 pts above the national average of 36.2%
Independent living disability10.3% 1.9 pts above the national average of 8.4%
Mammography use64.4% 11.5 pts below the national average of 75.9%
Poor mental health (14+ days)16.9% same as the national average of 16.8%
Mobility disability20% 6 pts above the national average of 14%
Poor physical health (14+ days)18.1% 4.6 pts above the national average of 13.5%
Self-care disability5.7% 1.7 pts above the national average of 4%
Sleeps under 7 hours34.2% 2.2 pts below the national average of 36.4%
Stroke5.5% 2.1 pts above the national average of 3.4%
All natural teeth lost15.8% 2.8 pts above the national average of 13%
Vision disability6.6% 1 pts above the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments82
People employed553
Annual payroll$22,804,000
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Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 95.2% of US census tracts
FEMA ratingRelatively High to Very High across the 4 census tracts this ZIP code covers
Expected annual loss91 out of 100
Community resilience7 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Wildfire99.6Very High at its worst in this ZIP code
Landslide99.4Relatively High at its worst in this ZIP code
River flooding93.8Very High at its worst in this ZIP code
Cold wave85.9Relatively High at its worst in this ZIP code
Volcanic activity80.8Very Low at its worst in this ZIP code
Winter weather70.3Relatively Moderate at its worst in this ZIP code
Drought67.7Very Low at its worst in this ZIP code
Earthquake65.3Relatively Low at its worst in this ZIP code
Heat wave54.2Relatively Moderate at its worst in this ZIP code
Lightning48.6Relatively Moderate at its worst in this ZIP code
Strong wind36.8Relatively Low at its worst in this ZIP code
Hail32.2Relatively Low at its worst in this ZIP code
Avalanche20.7Relatively Moderate at its worst in this ZIP code
Ice storm9.8Very Low at its worst in this ZIP code
Tornado7.9Very Low at its worst in this ZIP code
Compared with Washington and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPWashingtonUnited States
Median household income$59,821$94,952$78,538
Income per person$38,264$51,493$43,289
Poverty rate14.3%9.9%12.4%
Median home value$273,100$519,800$303,400
Median gross rent$789$1,682$1,348
Homeownership73.9%63.9%65%
Bachelor's degree or higher19.5%38.8%35%
Unemployment rate12.5%5%5.2%
Works from home17.9%17.7%13.5%
Born outside the US2.3%15.1%13.9%
Median age55.538.238.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationREPUBLIC, WA US3.8 km away
Rain in a year18 in
Snow in a year52 in

Average high and low by month

January31.1°F / 16.1°F1.62 in rain, 13.1 in snow
February38.2°F / 17.7°F1.34 in rain, 6.6 in snow
March48.6°F / 23.9°F1.54 in rain, 3.3 in snow
April58.2°F / 29.3°F1.38 in rain, 0.5 in snow
May67.9°F / 37°F2.06 in rain
June73.9°F / 42.4°F2.17 in rain
July84.1°F / 46.5°F1.16 in rain
August84°F / 45.2°F0.64 in rain
September74.1°F / 37.9°F0.87 in rain
October56.9°F / 29.4°F1.25 in rain, 0.4 in snow
November39.7°F / 23.3°F1.86 in rain, 7.7 in snow
December30.2°F / 16°F2.19 in rain, 20.9 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket28% of this ZIP code's area
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Republic School District92.6% of this ZIP code's land area
Curlew School District6% of this ZIP code's land area
Kettle Falls School District1.2% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability75more vulnerable than 75% of US census tracts
Socioeconomic status64more vulnerable than 64% of US census tracts
Household characteristics68more vulnerable than 68% of US census tracts
Racial and ethnic minority status32more vulnerable than 32% of US census tracts
Housing type and transport86more vulnerable than 86% of US census tracts
Walkability5.2 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

99150 Malo, WA17.1 km away
98859 Wauconda, WA24.8 km away
99118 Curlew, WA27 km away
99121 Danville, WA37 km away
99160 Orient, WA42.4 km away
99107 Boyds, WA42.5 km away
99151 Marcus, WA46.4 km away
99141 Kettle Falls, WA47.5 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Ferry County98.5% of this ZIP code's land area
Okanogan County1.5% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area479.36 sq mi
Water area1.61 sq mi
Population density6 people per sq mi
Latitude, longitude48.6704, -118.6999

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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