ZIP Code 99128 - Farmington Washington

99128 Overview

ZIP Code 99128 is located in Farmington Washington. Portions of 99128 are also in Garfield. 99128 is entirely within Whitman County. Regionally, 99128 is located in the Spokane Area.

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ZIP Code 99128 Quick Stats

ZIP Code NameFarmington
Primary CountyWhitman County
ZIP Code TypeStandard
Population (2022)289
Area Code(s)509
Current Time
PST

ZIP Code 99128 Map

99128 Demographics

99128 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Washington based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 99128 is White. The current unemployment level in 99128 is 4.9%.

Population289
Population Growth Rate19.75%
Population Density4 People per Square Mile
Total Households168
Percentage High Income Households4.8%
Median Household Income (2021)$58,750
Average Adjusted Gross Income (2021)$185,450
Current Unemployment Rate (October 2024)4.9%
Majority Race/EthnictyWhite - 93.92%

99128 Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White27893.92%
Black00%
Hispanic113.72%
Asian62.03%
Native American10.34%
Hawaiian/Pac. Islander00%

99128 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College103.31%
Bachelor Degree7424.5%
High School Diploma7324.17%
No High School Diploma00%
GED or Alternate00%
1 or More Years of College8929.47%
Associates Degree185.96%
Masters Degree3812.58%
Professional Degree00%
Doctorate Degree00%

99128 Geography

Coordinates47.10620880,-117.10513306
Adjacent ZIP Codes
Cities/Towns in 99128
RegionSpokane Area
Metropolitan/Micropolitan Stat AreaPullman, WA
Time ZonePacific Standard Time
IANA TimezoneAmerica/Los_Angeles
Area71 Square Miles

99128 Weather and Climate Data

Plant Hardiness ZoneZone 6a: -10F to -5F
Average First Frost DateSeptember 11 - 20
Average Last Frost DateMay 21 - 31
Koppen-Geiger Climate ZoneDsb - Humid Continental Climate - Dry Cool Summer
Ecoregion10h - Palouse Hills

99128 Annual Climate Data

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)26303235404448474034282636
Avg Max Temp (°F)38465457667282837560423859
Avg Precip (In.)2.632.222.191.92.181.711.921.091.632.922.9423.34

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