Farmington, WA 99128 ZIP Code Profile

Related Place Profiles:
Farmington, WA

Camera Icon Photos of the local Farmington, WA area   |   Farmington, WA 99128 Real Estate

ZIP Code 99128: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Farmington, WA 99128

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 13
  • Single Family Addresses: 128
  • Multi-Family Addresses: 0
  • County: Whitman County
  • Centroid: Latitude 47.089, Longitude -117.044
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes

ZIP Code 99128 has segments in 3 Counties (Benewah, Latah, Whitman).

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


99128 ZIP Code Map

Search the map for:

Farmington, WA 99128 Data & Demographics (As of July 1, 2016)


Total Population 341
Population in Households 338
Population in Familes 274
Population in Group Qrtrs 3
Population Density1 5
Diversity Index2 14


Total Households 141
Average Household Size 2.4
Family Households 91
Average Family Size 3


Total Housing Units 177 (100%)
Owner Occupied HU 96 (54.2%)
Renter Occupied HU 45 (25.4%)
Vacant Housing Units 36 (20.3%)
Median Home Value $153,846
Average Home Value $162,760


Median Household Income $49,350
Average Household Income $61,031
Per Capita Income $25,384
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.97% 1.03%
Households 1.31% 1.11%
Families 1.29% 1.08%
Median Household Income   2.4%
Per Capita Income   2.18%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Farmington, WA 99128 - Peer Comparisons by Rank and Percentile

The table below compares 99128 to the other 585 ZIP Codes in Washington by rank and percentile using July 1, 2016 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 # 508 13th
Population Density1 # 508 14th
Diversity Index2 # 558 5th
Median Household Income # 348 41st
Per Capita Income # 356 39th

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