99166 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
Republic, WA

ZIP Code 99166: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Republic, WA 99166

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  • ZIP Code Type: STANDARD
  • County: Ferry County
  • Centroid: Latitude 48.69, Longitude -118.689
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes

ZIP Code 99166 has segments in 2 Counties (Ferry, Okanogan).

  • Businesses Addresses: 182
  • PO Box Addresses: 677
  • Residential Addresses: 1,018
    • Multi-Family Addresses: 70
    • Single Family Addresses: 948

The ZIP Code maps and database are updated 4 times per year.
Database updated: July 1, 2022, Maps updated: August 12, 2022.


Republic, WA 99166 Data & Demographics (As of July 1, 2022)


Total Population 2,967 (100%)
Population in Households 2,880 (97.1%)
Population in Families 2,207 (74.4%)
Population in Group Quarters1 87 ( 2.9%)
Population Density 6
Diversity Index2 31


Median Household Income $47,453
Average Household Income $72,216
% of Income for Mortgage4 20%
Per Capita Income $33,015
Wealth Index5 69


Total HU (Housing Units) 1,747 (100%)
Owner Occupied HU 966 (55.3%)
Renter Occupied HU 407 (23.3%)
Vacant Housing Units 375 (21.5%)
Median Home Value $181,525
Average Home Value $220,332
Housing Affordability Index3 130


Total Households 1,372
Average Household Size 2.10
Family Households 857
Average Family Size 3.00
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2020-2022 2022-2027
Population -0.25% -0.08%
Households -0.32% -0.01%
Families   -0.02%
Median Household Income   4.29%
Per Capita Income   2.25%
Owner Occupied HU   0.23%

Republic, WA 99166 - Peer Comparisons by Rank and Percentile

The table below compares 99166 to the other 589 ZIP Codes in Washington by rank and percentile using July 1, 2022 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 336 43rd
Population Density # 498 16th
Median Household Income # 547 7th
Housing Affordability Index # 521 88th
Per Capita Income # 414 30th
Diversity Index # 455 23rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.

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