US ZIP Code
99128

Farmington, WA

Whitman County  ·  Washington

● Active
👥 248 Population ↓ 26% since 2019
💰 $58,194 Median HH Income
▼ 24% below avg
🎂 51.0 Median Age ↑ 5% since 2019
🏠 $300,000 Median Home Value
▲ 8% above avg ↑ 75% since 2019
🎓 39.7% College Grads
≈ Avg
📊 10.8% Unemployment
▲ 120% above avg
ZIP Code Details
ZIP Code99128
CityFarmington
StateWashington (WA)
CountyWhitman County
Area Code509
Elevation2,565 ft
Latitude47.097949
Longitude-117.081329
TimezoneLos Angeles (DST)
FIPS53075
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 56.5% (140) Female 43.6% (108) ♀

Race & Ethnicity

White: 93.6%Hispanic: 3.2%Asian: 0.8%Other: 1.6%Race
White93.6%
Hispanic3.2%
Asian0.8%
Other1.6%

Age Breakdown

Under 5
2%
5–17
15%
18–24
3%
25–44
21%
45–64
39%
65+
10%

Key Indicators

Median Age51.0 yrs ↑ 5% since 2019
Avg Household Size2.12
Below Poverty13.7% ▲ 37% above avg
College Grads39.7% ≈ Avg
Unemployment10.8% ▲ 120% above avg
No HS Diploma3 (1.5%)
HS Graduate53 (26.6%)
Some College22 (11.1%)
Associates42 (21.1%)
Bachelors28 (14.1%)
Graduate Degree51 (25.6%)

Education

No HS: 1.5%HS Grad: 26.6%Some College: 11.1%Associates: 21.1%Bachelors: 14.1%Graduate: 25.6%Edu
No HS1.5%
HS Grad26.6%
Some College11.1%
Associates21.1%
Bachelors14.1%
Graduate25.6%
Housing & Income

Housing Tenure

Owner: 76.9%Renter: 23.1%Tenure
Owner76.9%
Renter23.1%

Home Value Distribution

Under $50k
13%
$50k–100k
10%
$100k–150k
4%
$150k–200k
7%
$200k–300k
16%
$300k–500k
31%
Over $500k
19%

Financials

Median HH Income$58,194 ▼ 24% below avg
Median Home Value$300,000 ▲ 8% above avg ↑ 75% since 2019
Home/Income Ratio5.2x (nat avg ~3.5x)
Median Rent$925/mo
Total Units149
Vacant Units32
Avg HH Size2.12

Income Distribution

Under $25k
30%
$25k–50k
11%
$50k–75k
25%
$75k–100k
9%
$100k–150k
15%
$150k–200k
2%
Over $200k
9%
Employment & Commute

How People Get to Work

Drove Alone
68%
Walked
7%
Work From Home
25%

Commute Time

Under 15 min
34%
15–30 min
18%
30–45 min
17%
Over 45 min
30%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
6%
1960s–1970s
8%
1980s–1990s
7%
2000+
77%

Summary

Total Units149
Vacant32
Owner Occupied76.9%
Renter Occupied23.1%
Avg HH Size2.12
Frequently Asked Questions
ZIP code 99128 is in Farmington, WA, in Whitman County.
ZIP code 99128 is located in Washington (WA).
ZIP code 99128 is in Whitman County, WA.
ZIP 99128 observes the Los Angeles timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 99128 is 248 people (ACS 2023).
The median household income in ZIP code 99128 is $58,194 (ACS 2023).
The median home value in ZIP 99128 is $300,000 (ACS 2023).
About ZIP Code 99128

ZIP code 99128 is located in Farmington, Washington, within Whitman County. With a population of 248, this is a sparsely populated ZIP code with a mature community — the median age is 51 years. Economically, 99128 is a solidly middle-class ZIP code: the median household income of $58,194 is below the national average.

Real estate in ZIP code 99128 represents a mid-range housing market. The median home value of $300,000 is near the national average. Renters can expect to pay around $925 per month in median rent. Homeownership is strong here — 76.9% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 75% since 2019.

The population of 99128 is primarily White (93.55%). Residents are moderately educated — 39.7% hold a bachelor's degree or higher, which is near the national average. Poverty affects some residents at 13.7%.

The unemployment rate in 99128 stands at 10.8%, which is more than double the national average. About 20% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 55%.

Overall, ZIP code 99128 in Farmington, WA is characterized as solidly middle-class, moderately educated, a mature community, and predominantly owner-occupied. With 248 residents, a median household income of $58,194, and a median home value of $300,000, it offers a clear picture of life in this part of Washington.