Residential delivery area · Washington
ZIP Code 99166: Republic, WA
ZIP code 99166 uses the postal name Republic, Washington and lies mostly in Ferry County (98% of its land) with the rest in Okanogan County (Census 2020 ZIP-county file). About 3,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $56,676 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Curlew Lake (under 1%), Republic (under 1%), Torboy (under 1%) and Pine Grove (under 1%); 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- IRS2022
- Town
- Republic · its only residential ZIP
- County
- Ferry County (98%); Okanogan County (2%)
- Census places
- Curlew Lake (under 1%) census-designated place; Republic (under 1%); Torboy (under 1%) census-designated place; Pine Grove (under 1%) census-designated place
- House districts
- WA-5 (98%), WA-4 (2%) 119th Congress, by share of land
- State
- Washington
- Time zone
- Pacific
- Land area
- 479.4 sq mi · 6 people per sq mi
Where is ZIP code 99166?
99166 centers on 48.609°, -118.667° and covers 479.4 square miles of land plus 1.6 of water. It borders 8 ZIP codes: 99150, 98859, 99118, 99141, 99155, 98855, 99138, 99140.
The map draws ZIP code areas only. For the streets inside 99166, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 99166 compare with the rest of Ferry County?
| Measure | 99166 | In Ferry County | In WA |
|---|---|---|---|
| People (ACS 2020-2024) | 2,953 | 2nd of 9 | 337th of 605 |
| Median household income | $57k | 2nd of 2 | 352nd of 363 |
| Median home value | $286k | 2nd of 3 | 351st of 392 |
Its median household income is higher than in 24% of U.S. residential ZIP codes, and it is denser than 12% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 99166?
The 2020 Census counted 3,011 people in 99166; the ACS, which samples households over 2020-2024, estimates 2,953. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 2,953
- 2020 Census count
- 3,011
- Households
- 1,247
- Median age
- 54.2
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 99166?
Of the 2,953 people the ACS estimates in 99166, 13.3% are under 18 and 32.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (87.5%).
- Under 1813.3%
- 18 to 6454.5%
- 65 and older32.2%
- White, not Hispanic87.5%
- Other or two or more9.2%
- Hispanic or Latino3.1%
- Black, not Hispanic0.2%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 99166 earn?
Median household income is $56,676 (ACS 2020-2024).
- Median household income
- $56,676±$7,617
- Income per person
- $32,158
- Below the poverty line
- 10.6%
- Unemployed (of the labor force)
- 15.3%
- Adults 25+ with a bachelor's degree
- 13.7%
- Adjusted gross income per tax return, 2022
- $61,0161,300 returns; wages 57% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 99166?
- Median home value (owners' estimate)
- $286,000
- Median gross rent
- $810
- Homes owned by their occupants
- 79.0%
- Housing units
- 1,730
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 99166?
84 business establishments had a location in this ZIP code in 2023, 6 fewer than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services18
- Retail trade11
- Construction9
- Other services (except public administration)8
- Professional, scientific, and technical services7
- Health care and social assistance7
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 99166?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 99150 | Malo | 351 | $62k | 13.9 mi |
| 98859 | Wauconda | 435 | $98k | 18.5 mi |
| 99118 | Curlew | 899 | $69k | 20.0 mi |
| 99141 | Kettle Falls | 5,626 | $58k | 24.0 mi |
| 99155 | Nespelem | 1,009 | $51k | 25.8 mi |
| 98855 | Tonasket | 5,857 | $60k | 27.1 mi |
| 99138 | Inchelium | 1,223 | $51k | 29.0 mi |
| 99140 | Keller | 486 | $54k | 34.4 mi |
| 99121 | Danville | 262 | – | 24.4 mi (near) |
| 99160 | Orient | 87 | – | 24.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.